Merge pull request #48 from jsholmes/fix/tweet-detail-partial-errors

fix: handle partial errors in TweetDetail API responses

.github/workflows/ci.yml

@@ -34,5 +34,8 @@ jobs:
       - name: Install dependencies
         run: pnpm install --frozen-lockfile
 
+      - name: Build dist
+        run: pnpm run build:dist
+
       - name: Run tests
         run: pnpm test

.npmrc

@@ -0,0 +1 @@
+auto-install-peers=false

CHANGELOG.md

@@ -1,6 +1,94 @@
 # Changelog
 
-## 0.4.1 — Unreleased
+## 0.7.0 — Unreleased
+
+### Added
+- `list-timeline` now supports pagination (`--all`, `--max-pages`, `--cursor`) (#30) — thanks @zheli.
+- `home` command for the "For You" and "Following" home timelines (#31) — thanks @odysseus0.
+- Rich text output now shows article previews, quoted tweets, and media links (#32) — thanks @odysseus0.
+- `user-tweets` command to fetch a user's profile timeline (#34) — thanks @crcatala.
+- `replies` and `thread` now support pagination (`--all`, `--max-pages`, `--cursor`, `--delay`) (#35) — thanks @crcatala.
+- Long-form article tweets now render rich Draft.js content blocks/entities (#36) — thanks @crcatala.
+- `news`/`trending` command for Explore tabs with AI-curated headlines (#39) — thanks @aavetis.
+- `search` now supports pagination (`--all`, `--max-pages`, `--cursor`) (#42) — thanks @pjtf93.
+- `likes` now supports pagination (`--all`, `--max-pages`, `--cursor`) (#44) — thanks @jsholmes.
+
+### Changed
+- Library typing: `SearchResult` is now a discriminated union (so `error` only exists when `success: false`).
+
+### Fixed
+- macOS cookie extraction now supports Brave keychain storage (#40) — thanks @gakonst.
+- Terminal hyperlinks now sanitize control characters before emitting OSC 8 sequences (#29) — thanks @mafulafunk.
+- Following/followers pagination now guards repeat cursors and standardizes JSON output (#28) — thanks @malpern.
+- Lists GraphQL feature flags updated to prevent 400s (#27) — thanks @zheli.
+- Likes pagination now follows cursors and avoids stalling on duplicate pages (#12) — thanks @titouv.
+- Tweet detail parsing now tolerates partial GraphQL errors when usable data exists (#48) — thanks @jsholmes.
+- `pnpm run build:dist` now succeeds after tightening JSON/pagination option typing in tweet output commands.
+- News output now respects `--tweets-per-item`, keeps unique IDs, and parses non-add entry instructions (#39) — thanks @aavetis.
+
+### Tests
+- Following: split following/likes tests + cover cursor handling (#33) — thanks @VACInc.
+
+## 0.6.0 — 2026-01-05
+
+### Added
+- Bookmark exports now support pagination (`--all`, `--max-pages`) with retries (#15) — thanks @Nano1337.
+- `lists` + `list-timeline` commands for Twitter Lists (#21) — thanks @harperreed
+- Tweet JSON output now includes media items (photos, videos, GIFs) (#14) — thanks @Hormold
+- Bookmarks can resume pagination from a cursor (#26) — thanks @leonho
+- `unbookmark` command to remove bookmarked tweets (#22) — thanks @mbelinky.
+
+### Changed
+- Feature flags can be overridden at runtime via `features.json` (refreshable via `query-ids`).
+
+### Fixed
+- GraphQL feature flags now include `post_ctas_fetch_enabled` to avoid 400s (#38) — thanks @philipp-spiess.
+
+## 0.5.1 — 2026-01-01
+
+### Changed
+- `bird --help` now includes explicit “Shortcuts” and “JSON Output” sections (documents `bird <tweet-id-or-url>` shorthand + `--json`).
+- Release docs now include explicit npm publish verification steps.
+
+### Fixed
+- `pnpm bird --help` now works (dev script runs the CLI entrypoint, not the library entrypoint).
+- `following`/`followers` now fall back to internal v1.1 REST endpoints when GraphQL returns `404`.
+
+### Tests
+- Add root help output regression test.
+- Add opt-in live CLI test suite (real GraphQL calls; skipped by default; gated via `BIRD_LIVE=1`).
+
+## 0.5.0 — 2026-01-01
+
+### Added
+- `likes` command to list your liked tweets (thanks @swairshah).
+- Quoted tweet data in JSON output + `--quote-depth` (thanks @alexknowshtml).
+- `following`/`followers` commands to list users (thanks @lockmeister).
+
+### Changed
+- Query ID updater now tracks the Likes GraphQL operation.
+- Query ID updater now tracks Following/Followers GraphQL operations.
+- Query ID updater now tracks BookmarkFolderTimeline and keeps bookmark query IDs seeded.
+- `following`/`followers` JSON user fields are now camelCase (`followersCount`, `followingCount`, `isBlueVerified`, `profileImageUrl`, `createdAt`).
+- Cookie extraction timeout is now configurable (default 30s on macOS) via `--cookie-timeout` / `BIRD_COOKIE_TIMEOUT_MS` (thanks @tylerseymour).
+- Search now paginates beyond 20 results when using `-n` (thanks @ryanh-ai).
+- Library exports are now separated from the CLI entrypoint for easier embedding.
+
+## 0.4.1 — 2025-12-31
+
+### Added
+- `bookmarks` command to list your bookmarked tweets.
+- `bookmarks --folder-id` to fetch bookmark folders (thanks @tylerseymour).
+
+### Changed
+- Cookie extraction now uses `@steipete/sweet-cookie` (drops `sqlite3` CLI + custom browser readers in `bird`).
+- Query ID updater now tracks the Bookmarks GraphQL operation.
+- Lint rules stricter (block statements, no-negation-else, useConst/useTemplate, top-level regex, import extension enforcement).
+- `pnpm lint` now runs both Biome and oxlint (type-aware).
+
+### Tests
+- Coverage thresholds raised to 90% statements/lines/functions (80% branches).
+- Added targeted Twitter client coverage suites.
 
 ## 0.4.0 — 2025-12-26
 

README.md

@@ -42,16 +42,110 @@ bird 1234567890123456789 --json
 # Thread + replies
 bird thread https://x.com/user/status/1234567890123456789
 bird replies 1234567890123456789
+bird replies 1234567890123456789 --max-pages 3 --json
+bird thread 1234567890123456789 --max-pages 3 --json
 
 # Search + mentions
 bird search "from:steipete" -n 5
 bird mentions -n 5
 bird mentions --user @steipete -n 5
 
+# User tweets (profile timeline)
+bird user-tweets @steipete -n 20
+bird user-tweets @steipete -n 50 --json
+
+# Bookmarks
+bird bookmarks -n 5
+bird bookmarks --folder-id 123456789123456789 -n 5 # https://x.com/i/bookmarks/<folder-id>
+bird bookmarks --all --json
+bird bookmarks --all --max-pages 2 --json
+bird unbookmark 1234567890123456789
+bird unbookmark https://x.com/user/status/1234567890123456789
+
+# Likes
+bird likes -n 5
+
+# News and trending topics (AI-curated from Explore tabs)
+bird news --ai-only -n 10
+bird news --sports -n 5
+
+# Lists
+bird list-timeline 1234567890 -n 20
+bird list-timeline https://x.com/i/lists/1234567890 --all --json
+bird list-timeline 1234567890 --max-pages 3 --json
+
+# Following (who you follow)
+bird following -n 20
+bird following --user 12345678 -n 10  # by user ID
+
+# Followers (who follows you)
+bird followers -n 20
+bird followers --user 12345678 -n 10  # by user ID
+
 # Refresh GraphQL query IDs cache (no rebuild)
 bird query-ids --fresh
 ```
 
+## News & Trending
+
+Fetch AI-curated news and trending topics from X's Explore page tabs:
+
+```bash
+# Fetch 10 news items from all tabs (default: For You, News, Sports, Entertainment)
+bird news -n 10
+
+# Fetch only AI-curated news (filters out regular trends)
+bird news --ai-only -n 20
+
+# Fetch from specific tabs
+bird news --news-only --ai-only -n 10
+bird news --sports -n 15
+bird news --entertainment --ai-only -n 5
+
+# Include related tweets for each news item
+bird news --with-tweets --tweets-per-item 3 -n 10
+
+# Combine multiple tab filters
+bird news --sports --entertainment -n 20
+
+# JSON output
+bird news --json -n 5
+bird news --json-full --ai-only -n 10  # includes raw API response
+```
+
+Tab options (can be combined):
+- `--for-you` — Fetch from For You tab only
+- `--news-only` — Fetch from News tab only
+- `--sports` — Fetch from Sports tab only
+- `--entertainment` — Fetch from Entertainment tab only
+- `--trending-only` — Fetch from Trending tab only
+
+By default, the command fetches from For You, News, Sports, and Entertainment tabs (Trending excluded to reduce noise). Headlines are automatically deduplicated across tabs.
+
+## Library
+
+`bird` can be used as a library (same GraphQL client as the CLI):
+
+```ts
+import { TwitterClient, resolveCredentials } from '@steipete/bird';
+
+const { cookies } = await resolveCredentials({ cookieSource: 'safari' });
+const client = new TwitterClient({ cookies });
+
+// Search for tweets
+const searchResult = await client.search('from:steipete', 50);
+
+// Fetch news and trending topics from all tabs (default: For You, News, Sports, Entertainment)
+const newsResult = await client.getNews(10, { aiOnly: true });
+
+// Fetch from specific tabs with related tweets
+const sportsNews = await client.getNews(10, {
+  aiOnly: true,
+  withTweets: true,
+  tabs: ['sports', 'entertainment']
+});
+```
+
 ## Commands
 
 - `bird tweet "<text>"` — post a new tweet.
@@ -60,19 +154,44 @@ bird query-ids --fresh
 - `bird query-ids [--fresh] [--json]` — inspect or refresh cached GraphQL query IDs.
 - `bird read <tweet-id-or-url> [--json]` — fetch tweet content as text or JSON.
 - `bird <tweet-id-or-url> [--json]` — shorthand for `read` when only a URL or ID is provided.
-- `bird replies <tweet-id-or-url> [--json]` — list replies to a tweet.
-- `bird thread <tweet-id-or-url> [--json]` — show the full conversation thread.
-- `bird search "<query>" [-n count] [--json]` — search for tweets matching a query.
+- `bird replies <tweet-id-or-url> [--all] [--max-pages n] [--cursor string] [--delay ms] [--json]` — list replies to a tweet.
+- `bird thread <tweet-id-or-url> [--all] [--max-pages n] [--cursor string] [--delay ms] [--json]` — show the full conversation thread.
+- `bird search "<query>" [-n count] [--all] [--max-pages n] [--cursor string] [--json]` — search for tweets matching a query; `--max-pages` requires `--all` or `--cursor`.
 - `bird mentions [-n count] [--user @handle] [--json]` — find tweets mentioning a user (defaults to the authenticated user).
+- `bird user-tweets <@handle> [-n count] [--cursor string] [--max-pages n] [--delay ms] [--json]` — get tweets from a user's profile timeline.
+- `bird bookmarks [-n count] [--folder-id id] [--all] [--max-pages n] [--json]` — list your bookmarked tweets (or a specific bookmark folder); `--max-pages` requires `--all`.
+- `bird unbookmark <tweet-id-or-url...>` — remove one or more bookmarks by tweet ID or URL.
+- `bird likes [-n count] [--json]` — list your liked tweets.
+- `bird news [-n count] [--ai-only] [--with-tweets] [--tweets-per-item n] [--for-you] [--news-only] [--sports] [--entertainment] [--trending-only] [--json]` — fetch news and trending topics from X's Explore tabs.
+- `bird trending` — alias for `news` command.
+- `bird list-timeline <list-id-or-url> [-n count] [--all] [--max-pages n] [--cursor string] [--json]` — get tweets from a list timeline; `--max-pages` implies `--all`.
+- `bird following [--user <userId>] [-n count] [--json]` — list users that you (or another user) follow.
+- `bird followers [--user <userId>] [-n count] [--json]` — list users that follow you (or another user).
 - `bird whoami` — print which Twitter account your cookies belong to.
 - `bird check` — show which credentials are available and where they were sourced from.
+ - `bird likes [-n count] [--json]` — list your liked tweets.
+ - `bird news [-n count] [--ai-only] [--with-tweets] [--tweets-per-item n] [--for-you] [--news-only] [--sports] [--entertainment] [--trending-only] [--json]` — fetch news and trending topics from X's Explore tabs (fetches from For You, News, Sports, and Entertainment tabs by default).
+ - `bird trending` — alias for `news` command.
+ - `bird list-timeline <list-id-or-url> [-n count] [--all] [--max-pages n] [--cursor string] [--json]` — get tweets from a list timeline; `--max-pages` implies `--all`.
+ - `bird following [--user <userId>] [-n count] [--json]` — list users that you (or another user) follow.
+ - `bird followers [--user <userId>] [-n count] [--json]` — list users that follow you (or another user).
+ - `bird whoami` — print which Twitter account your cookies belong to.
+ - `bird check` — show which credentials are available and where they were sourced from.
 
 Global options:
+- `--auth-token <token>`: set the `auth_token` cookie manually.
+- `--ct0 <token>`: set the `ct0` cookie manually.
+- `--cookie-source <safari|chrome|firefox>`: choose browser cookie source (repeatable; order matters).
+- `--chrome-profile <name>`: Chrome profile for cookie extraction.
+- `--firefox-profile <name>`: Firefox profile for cookie extraction.
+- `--cookie-timeout <ms>`: cookie extraction timeout for keychain/OS helpers (milliseconds).
 - `--timeout <ms>`: abort requests after the given timeout (milliseconds).
+- `--quote-depth <n>`: max quoted tweet depth in JSON output (default: 1; 0 disables).
 - `--plain`: stable output (no emoji, no color).
 - `--no-emoji`: disable emoji output.
 - `--no-color`: disable ANSI colors (or set `NO_COLOR=1`).
-- `--cookie-source <safari|chrome|firefox>`: choose browser cookie source (repeatable; order matters).
+- `--media <path>`: attach media file (repeatable, up to 4 images or 1 video).
+- `--alt <text>`: alt text for the corresponding `--media` (repeatable).
 
 ## Authentication (GraphQL)
 
@@ -87,7 +206,7 @@ Write operations:
 
 1. CLI flags: `--auth-token`, `--ct0`
 2. Environment variables: `AUTH_TOKEN`, `CT0` (fallback: `TWITTER_AUTH_TOKEN`, `TWITTER_CT0`)
-3. Browser cookies (macOS): Safari, Chrome, Firefox (override via `--cookie-source` order)
+3. Browser cookies via `@steipete/sweet-cookie` (override via `--cookie-source` order)
 
 Browser cookie sources:
 - Safari: `~/Library/Cookies/Cookies.binarycookies` (fallback: `~/Library/Containers/com.apple.Safari/Data/Library/Cookies/Cookies.binarycookies`)
@@ -108,19 +227,71 @@ Example `~/.config/bird/config.json5`:
   // Cookie source order for browser extraction (string or array)
   cookieSource: ["firefox", "safari"],
   firefoxProfile: "default-release",
-  timeoutMs: 20000
+  cookieTimeoutMs: 30000,
+  timeoutMs: 20000,
+  quoteDepth: 1
 }
 ```
 
 Environment shortcuts:
 - `BIRD_TIMEOUT_MS`
+- `BIRD_COOKIE_TIMEOUT_MS`
+- `BIRD_QUOTE_DEPTH`
 
 ## Output
 
-- `--json` prints raw tweet objects for read/replies/thread/search/mentions.
+- `--json` prints raw tweet objects for read/replies/thread/search/mentions/user-tweets/bookmarks/likes.
+- When using `--json` with pagination (`--all`, `--cursor`, `--max-pages`, or for `user-tweets` when `-n > 20`), output is `{ tweets, nextCursor }`.
 - `read` returns full text for Notes and Articles when present.
 - Use `--plain` for stable, script-friendly output (no emoji, no color).
 
+### JSON Schema
+
+When using `--json`, tweet objects include:
+
+| Field | Type | Description |
+|-------|------|-------------|
+| `id` | string | Tweet ID |
+| `text` | string | Full tweet text (includes Note/Article content when present) |
+| `author` | object | `{ username, name }` |
+| `authorId` | string? | Author's user ID |
+| `createdAt` | string | Timestamp |
+| `replyCount` | number | Number of replies |
+| `retweetCount` | number | Number of retweets |
+| `likeCount` | number | Number of likes |
+| `conversationId` | string | Thread conversation ID |
+| `inReplyToStatusId` | string? | Parent tweet ID (present if this is a reply) |
+| `quotedTweet` | object? | Embedded quote tweet (same schema; depth controlled by `--quote-depth`) |
+
+When using `--json` with `following`/`followers`, user objects include:
+
+| Field | Type | Description |
+|-------|------|-------------|
+| `id` | string | User ID |
+| `username` | string | Username/handle |
+| `name` | string | Display name |
+| `description` | string? | User bio |
+| `followersCount` | number? | Followers count |
+| `followingCount` | number? | Following count |
+| `isBlueVerified` | boolean? | Blue verified flag |
+ | `profileImageUrl` | string? | Profile image URL |
+ | `createdAt` | string? | Account creation timestamp |
+
+When using `--json` with `news`/`trending`, news objects include:
+
+| Field | Type | Description |
+|-------|------|-------------|
+| `id` | string | Unique identifier for the news item |
+| `headline` | string | News headline or trend title |
+| `category` | string? | Category (e.g., "AI · Technology", "Trending", "News") |
+| `timeAgo` | string? | Relative time (e.g., "2h ago") |
+| `postCount` | number? | Number of posts |
+| `description` | string? | Item description |
+| `url` | string? | URL to the trend or news article |
+| `tweets` | array? | Related tweets (only when `--with-tweets` is used) |
+| `_raw` | object? | Raw API response (only when `--json-full` is used) |
+
+
 ## Query IDs (GraphQL)
 
 X rotates GraphQL “query IDs” frequently. Each GraphQL operation is addressed as:

biome.json

@@ -11,10 +11,31 @@
     "rules": {
       "recommended": true,
       "complexity": {
-        "noForEach": "off"
+        "noForEach": "error"
+      },
+      "correctness": {
+        "useImportExtensions": {
+          "level": "error",
+          "options": {
+            "forceJsExtensions": true
+          }
+        }
+      },
+      "performance": {
+        "useTopLevelRegex": "error"
       },
       "style": {
-        "noNonNullAssertion": "off"
+        "noNegationElse": "error",
+        "noNonNullAssertion": "error",
+        "useBlockStatements": "error",
+        "useConst": "error",
+        "useTemplate": "error"
+      },
+      "suspicious": {
+        "noExplicitAny": "error"
+      },
+      "nursery": {
+        "useRegexpExec": "error"
       }
     }
   },

docs/releasing.md

@@ -1,4 +1,4 @@
-# Releasing bird 0.1.x
+# Releasing bird
 
 Target destinations:
 - npm: `@steipete/bird`
@@ -6,7 +6,7 @@ Target destinations:
 
 ## Checklist (npm + GitHub)
 1) Version bump
-   - Update `package.json` `version` (semver, e.g., `0.1.0`).
+   - Update `package.json` `version` (semver, e.g., `0.5.0`).
    - Update `CHANGELOG.md` and tag the release section.
 
 2) Clean build & tests
@@ -17,9 +17,12 @@ Target destinations:
 3) Publish to npm (scoped)
    - Ensure you are logged in (`npm whoami`).
    - `npm publish --access public` (from repo root). Package name is `@steipete/bird`.
+   - Verify:
+     - `npm view @steipete/bird version`
+     - `npx -y @steipete/bird@<version> --help`
 
 4) Git tag & GitHub release
-   - `git tag v0.1.0 && git push origin v0.1.0`
+   - `git tag v<version> && git push origin v<version>`
    - Create GitHub release from the tag. Include changelog notes and attach optional binary (see below).
 
 ## Optional: attach compiled binary
@@ -29,17 +32,17 @@ If you want a single-file binary for Homebrew/GitHub assets:
 
 ## Homebrew tap update (steipete/homebrew-tap)
 1) Package the binary
-   - From repo root: `tar -czf bird-macos-universal-v0.1.0.tar.gz bird`
-   - Compute SHA: `shasum -a 256 bird-macos-universal-v0.1.0.tar.gz`
+   - From repo root: `tar -czf bird-macos-universal-v<version>.tar.gz bird`
+   - Compute SHA: `shasum -a 256 bird-macos-universal-v<version>.tar.gz`
 
 2) Update formula in tap repo
    - File: `homebrew-tap/bird.rb` (create if absent). Model it after `poltergeist.rb`.
    - Fields to update:
-     - `url "https://github.com/steipete/bird/releases/download/v0.1.0/bird-macos-universal-v0.1.0.tar.gz"`
+     - `url "https://github.com/steipete/bird/releases/download/v<version>/bird-macos-universal-v<version>.tar.gz"`
      - `sha256 "<calculated_sha>"`
-     - `version "0.1.0"`
+     - `version "<version>"`
    - Install block: `bin.install "bird"`
-   - `test do`: minimal `assert_match "0.1.0", shell_output("#{bin}/bird --version")`
+   - `test do`: minimal `assert_match "<version>", shell_output("#{bin}/bird --version")`
 
 3) Push tap changes
    - `git add bird.rb && git commit -m "bird 0.1.0" && git push`

docs/testing.md

@@ -0,0 +1,34 @@
+# Testing
+
+## Unit tests (default)
+- `pnpm test`
+
+## Live tests (hits Twitter/X)
+
+Runs the CLI against real Twitter/X GraphQL endpoints to verify read-only commands still work.
+
+Requirements:
+- Auth cookies in env:
+  - `AUTH_TOKEN` (or `TWITTER_AUTH_TOKEN`)
+  - `CT0` (or `TWITTER_CT0`)
+- Network access
+
+Run:
+- `pnpm test:live`
+- `pnpm bird following --all --max-pages 2 --json --cookie-source chrome --chrome-profile Default`
+- `pnpm bird list-timeline <list-id> --all --max-pages 2 --json --cookie-source chrome --chrome-profile Default`
+- `pnpm bird search "from:steipete" --all --max-pages 2 --json --cookie-source chrome --chrome-profile Default`
+- `pnpm bird home --count 5 --json --cookie-source chrome --chrome-profile Default`
+- `pnpm bird home --count 5 --following --json --cookie-source chrome --chrome-profile Default`
+
+Notes:
+- Live tests are skipped unless `BIRD_LIVE=1` (set by `pnpm test:live`).
+- Search query is configurable via `BIRD_LIVE_SEARCH_QUERY`.
+- Command timeout is configurable via `BIRD_LIVE_TIMEOUT_MS` (ms).
+- Cookie extraction timeout is configurable via `BIRD_LIVE_COOKIE_TIMEOUT_MS` (ms).
+- Spawned CLI `NODE_ENV` defaults to `production` (override with `BIRD_LIVE_NODE_ENV`).
+- If you don't tweet, set `BIRD_LIVE_TWEET_ID` to a known tweet ID to use for `read/replies/thread`.
+- Long-form article coverage: set `BIRD_LIVE_LONGFORM_TWEET_ID` to a known article tweet ID (example: `2007184284944322584` from @X; refresh by finding a tweet with `article` via `bird user-tweets X -n 20 --json`).
+- Optional: set `BIRD_LIVE_BOOKMARK_FOLDER_ID` to exercise `bookmarks --folder-id`.
+- `bird query-ids --fresh` live coverage: set `BIRD_LIVE_QUERY_IDS_FRESH=1`.
+- The live suite may hit internal X endpoints (v1.1 REST) as fallback; it still uses cookie auth (no developer API key).

package.json

@@ -1,11 +1,12 @@
 {
   "name": "@steipete/bird",
-  "version": "0.4.0",
+  "version": "0.7.0",
   "description": "CLI tool for tweeting and replying via Twitter/X GraphQL API",
   "type": "module",
   "main": "dist/index.js",
+  "types": "dist/index.d.ts",
   "bin": {
-    "bird": "dist/index.js"
+    "bird": "dist/cli.js"
   },
   "files": [
     "dist",
@@ -16,31 +17,45 @@
   "scripts": {
     "build": "pnpm run build:dist && pnpm run build:binary",
     "build:dist": "tsc && node scripts/copy-dist-assets.js",
-    "build:binary": "BIRD_VERSION=$(node -p \"require('./package.json').version\") BIRD_GIT_SHA=$(git rev-parse --short=8 HEAD 2>/dev/null || true) bun build --compile --minify --env=BIRD_* src/index.ts --outfile bird",
+    "build:binary": "BIRD_VERSION=$(node -p \"require('./package.json').version\") BIRD_GIT_SHA=$(git rev-parse --short=8 HEAD 2>/dev/null || true) bun build --compile --minify --env=BIRD_* src/cli.ts --outfile bird",
     "dev": "tsx src/index.ts",
-    "bird": "pnpm run build:dist && node dist/index.js",
+    "bird": "pnpm run build:dist && node dist/cli.js",
     "test": "vitest run",
     "test:watch": "vitest",
-    "lint": "biome check .",
-    "lint:fix": "biome check --write .",
+    "test:live": "pnpm run build:dist && BIRD_LIVE=1 vitest run --no-file-parallelism tests/live/live.test.ts",
+    "test:live:all": "pnpm run build:dist && BIRD_LIVE=1 vitest run --no-file-parallelism tests/live/live-all.test.ts",
+    "lint": "pnpm run lint:biome && pnpm run lint:oxlint",
+    "lint:biome": "biome check .",
+    "lint:oxlint": "oxlint --type-aware --tsconfig tsconfig.oxlint.json --import-plugin --node-plugin --vitest-plugin --deny-warnings src tests scripts",
+    "lint:fix": "pnpm run lint:biome:fix && pnpm run lint:oxlint:fix",
+    "lint:biome:fix": "biome check --write .",
+    "lint:oxlint:fix": "oxlint --type-aware --tsconfig tsconfig.oxlint.json --import-plugin --node-plugin --vitest-plugin --deny-warnings --fix src tests scripts",
     "format": "biome format --write .",
     "binary": "pnpm run build:binary",
     "graphql:update": "tsx scripts/update-query-ids.ts"
   },
   "dependencies": {
+    "@steipete/sweet-cookie": "0.1.0",
     "commander": "^14.0.2",
     "json5": "^2.2.3",
     "kleur": "^4.1.5"
   },
+  "pnpm": {
+    "patchedDependencies": {
+      "@steipete/sweet-cookie": "patches/@steipete__sweet-cookie.patch"
+    }
+  },
   "devDependencies": {
     "@biomejs/biome": "^2.3.10",
     "@types/node": "^25.0.3",
     "@vitest/coverage-v8": "4.0.16",
+    "oxlint": "^1.36.0",
+    "oxlint-tsgolint": "^0.10.0",
     "tsx": "^4.21.0",
     "typescript": "^5.9.3",
     "vitest": "^4.0.16"
   },
   "engines": {
-    "node": ">=20"
+    "node": ">=22"
   }
 }

patches/@steipete__sweet-cookie.patch

@@ -0,0 +1,76 @@
+diff --git a/dist/providers/chromeSqliteMac.js b/dist/providers/chromeSqliteMac.js
+index 71c815f77378d03e07061976ac372b3a55a61ac4..b21c15640955a8e7faa8f1d6ea6fed7ca8f04ddb 100644
+--- a/dist/providers/chromeSqliteMac.js
++++ b/dist/providers/chromeSqliteMac.js
+@@ -4,19 +4,37 @@ import { decryptChromiumAes128CbcCookieValue, deriveAes128CbcKeyFromPassword, }
+ import { getCookiesFromChromeSqliteDb } from './chromeSqlite/shared.js';
+ import { readKeychainGenericPasswordFirst } from './chromium/macosKeychain.js';
+ import { resolveCookiesDbFromProfileOrRoots } from './chromium/paths.js';
++
++function resolveKeychainForDb(dbPath) {
++    const lower = dbPath.toLowerCase();
++    if (lower.includes('bravesoftware') || lower.includes('brave-browser') || lower.includes('brave browser')) {
++        return {
++            account: 'Brave',
++            services: ['Brave Safe Storage'],
++            label: 'Brave Safe Storage',
++        };
++    }
++    return {
++        account: 'Chrome',
++        services: ['Chrome Safe Storage'],
++        label: 'Chrome Safe Storage',
++    };
++}
++
+ export async function getCookiesFromChromeSqliteMac(options, origins, allowlistNames) {
+     const dbPath = resolveChromeCookiesDb(options.profile);
+     if (!dbPath) {
+         return { cookies: [], warnings: ['Chrome cookies database not found.'] };
+     }
+     const warnings = [];
+-    // On macOS, Chrome stores its "Safe Storage" secret in Keychain.
++    // On macOS, Chromium stores its "Safe Storage" secret in Keychain.
+     // `security find-generic-password` is stable and avoids any native Node keychain modules.
++    const keychain = resolveKeychainForDb(dbPath);
+     const passwordResult = await readKeychainGenericPasswordFirst({
+-        account: 'Chrome',
+-        services: ['Chrome Safe Storage'],
+-        timeoutMs: 3_000,
+-        label: 'Chrome Safe Storage',
++        account: keychain.account,
++        services: keychain.services,
++        timeoutMs: options.timeoutMs ?? 3_000,
++        label: keychain.label,
+     });
+     if (!passwordResult.ok) {
+         warnings.push(passwordResult.error);
+@@ -24,7 +42,7 @@ export async function getCookiesFromChromeSqliteMac(options, origins, allowlistN
+     }
+     const chromePassword = passwordResult.password.trim();
+     if (!chromePassword) {
+-        warnings.push('macOS Keychain returned an empty Chrome Safe Storage password.');
++        warnings.push(`macOS Keychain returned an empty ${keychain.label} password.`);
+         return { cookies: [], warnings };
+     }
+     // Chromium uses PBKDF2(password, "saltysalt", 1003, 16, sha1) for AES-128-CBC cookie values on macOS.
+@@ -46,14 +64,18 @@ export async function getCookiesFromChromeSqliteMac(options, origins, allowlistN
+     result.warnings.unshift(...warnings);
+     return result;
+ }
++
+ function resolveChromeCookiesDb(profile) {
+     const home = homedir();
+     /* c8 ignore next */
+     const roots = process.platform === 'darwin'
+-        ? [path.join(home, 'Library', 'Application Support', 'Google', 'Chrome')]
++        ? [
++            path.join(home, 'Library', 'Application Support', 'Google', 'Chrome'),
++            path.join(home, 'Library', 'Application Support', 'BraveSoftware', 'Brave-Browser'),
++        ]
+         : [];
+     const args = { roots };
+     if (profile !== undefined)
+         args.profile = profile;
+     return resolveCookiesDbFromProfileOrRoots(args);
+ }

pnpm-lock.yaml

@@ -1,13 +1,21 @@
 lockfileVersion: '9.0'
 
 settings:
-  autoInstallPeers: true
+  autoInstallPeers: false
   excludeLinksFromLockfile: false
 
+patchedDependencies:
+  '@steipete/sweet-cookie':
+    hash: 4ff44e9d3b5770a7b751c7a3470572bdf485763c28ead8055468dd0ae9a6e986
+    path: patches/@steipete__sweet-cookie.patch
+
 importers:
 
   .:
     dependencies:
+      '@steipete/sweet-cookie':
+        specifier: 0.1.0
+        version: 0.1.0(patch_hash=4ff44e9d3b5770a7b751c7a3470572bdf485763c28ead8055468dd0ae9a6e986)
       commander:
         specifier: ^14.0.2
         version: 14.0.2
@@ -27,6 +35,12 @@ importers:
       '@vitest/coverage-v8':
         specifier: 4.0.16
         version: 4.0.16([email protected](@types/[email protected])([email protected]))
+      oxlint:
+        specifier: ^1.36.0
+        version: 1.36.0([email protected])
+      oxlint-tsgolint:
+        specifier: ^0.10.0
+        version: 0.10.0
       tsx:
         specifier: ^4.21.0
         version: 4.21.0
@@ -279,6 +293,76 @@ packages:
   '@jridgewell/[email protected]':
     resolution: {integrity: sha512-zzNR+SdQSDJzc8joaeP8QQoCQr8NuYx2dIIytl1QeBEZHJ9uW6hebsrYgbz8hJwUQao3TWCMtmfV8Nu1twOLAw==}
 
+  '@oxlint-tsgolint/[email protected]':
+    resolution: {integrity: sha512-mhBF/pjey0UdLL1ocU46Fqta+uJuRfqrLfDpcViRg17BtDiUNd8JY9iN2FOoS2HGSCAgCUjZ0AZkwkHwFs/VTw==}
+    cpu: [arm64]
+    os: [darwin]
+
+  '@oxlint-tsgolint/[email protected]':
+    resolution: {integrity: sha512-roLi34mw/i1z+NS7luboix55SXyhVv38dNUTcRDkk+0lNPzI9ngrM+1y1N2oBSUmz5o9OZGnfJJ7BSGCw/fFEQ==}
+    cpu: [x64]
+    os: [darwin]
+
+  '@oxlint-tsgolint/[email protected]':
+    resolution: {integrity: sha512-HL9NThPH1V2F6l9XhwNmhQZUknN4m4yQYEvQFFGfZTYN6cvEEBIiqfF4KvBUg8c0xadMbQlW+Ug7/ybA9Nn+CA==}
+    cpu: [arm64]
+    os: [linux]
+
+  '@oxlint-tsgolint/[email protected]':
+    resolution: {integrity: sha512-Tw8QNq8ab+4+qE5krvJyMA66v6XE3GoiISRD5WmJ7YOxUnu//jSw/bBm7OYf/TNEZyeV0BTR7zXzhT5R+VFWlQ==}
+    cpu: [x64]
+    os: [linux]
+
+  '@oxlint-tsgolint/[email protected]':
+    resolution: {integrity: sha512-LTogmTRwpwQqVaH1Ama8Wd5/VVZWBSF8v5qTbeT628+1F5Kt1V5eHBvyFh4oN18UCZlgqrh7DqkDhsieXUaC8Q==}
+    cpu: [arm64]
+    os: [win32]
+
+  '@oxlint-tsgolint/[email protected]':
+    resolution: {integrity: sha512-ygqxx8EmNWy9/wCQS5uXq9k/o2EyYNwNxY1ZHNzlmZC/kV06Aemx5OBDafefawBNqH7xTZPfccUrjdiy+QlTrw==}
+    cpu: [x64]
+    os: [win32]
+
+  '@oxlint/[email protected]':
+    resolution: {integrity: sha512-MJkj82GH+nhvWKJhSIM6KlZ8tyGKdogSQXtNdpIyP02r/tTayFJQaAEWayG2Jhsn93kske+nimg5MYFhwO/rlg==}
+    cpu: [arm64]
+    os: [darwin]
+
+  '@oxlint/[email protected]':
+    resolution: {integrity: sha512-VvEhfkqj/99dCTqOcfkyFXOSbx4lIy5u2m2GHbK4WCMDySokOcMTNRHGw8fH/WgQ5cDrDMSTYIGQTmnBGi9tiQ==}
+    cpu: [x64]
+    os: [darwin]
+
+  '@oxlint/[email protected]':
+    resolution: {integrity: sha512-EMx92X5q+hHc3olTuj/kgkx9+yP0p/AVs4yvHbUfzZhBekXNpUWxWvg4hIKmQWn+Ee2j4o80/0ACGO0hDYJ9mg==}
+    cpu: [arm64]
+    os: [linux]
+
+  '@oxlint/[email protected]':
+    resolution: {integrity: sha512-7YCxtrPIctVYLqWrWkk8pahdCxch6PtsaucfMLC7TOlDt4nODhnQd4yzEscKqJ8Gjrw1bF4g+Ngob1gB+Qr9Fw==}
+    cpu: [arm64]
+    os: [linux]
+
+  '@oxlint/[email protected]':
+    resolution: {integrity: sha512-lnaJVlx5r3NWmoOMesfQXJSf78jHTn8Z+sdAf795Kgteo72+qGC1Uax2SToCJVN2J8PNG3oRV5bLriiCNR2i6Q==}
+    cpu: [x64]
+    os: [linux]
+
+  '@oxlint/[email protected]':
+    resolution: {integrity: sha512-AhuEU2Qdl66lSfTGu/Htirq8r/8q2YnZoG3yEXLMQWnPMn7efy8spD/N1NA7kH0Hll+cdfwgQkQqC2G4MS2lPQ==}
+    cpu: [x64]
+    os: [linux]
+
+  '@oxlint/[email protected]':
+    resolution: {integrity: sha512-GlWCBjUJY2QgvBFuNRkiRJu7K/djLmM0UQKfZV8IN+UXbP/JbjZHWKRdd4LXlQmzoz7M5Hd6p+ElCej8/90FCg==}
+    cpu: [arm64]
+    os: [win32]
+
+  '@oxlint/[email protected]':
+    resolution: {integrity: sha512-J+Vc00Utcf8p77lZPruQgb0QnQXuKnFogN88kCnOqs2a83I+vTBB8ILr0+L9sTwVRvIDMSC0pLdeQH4svWGFZg==}
+    cpu: [x64]
+    os: [win32]
+
   '@rollup/[email protected]':
     resolution: {integrity: sha512-iDGS/h7D8t7tvZ1t6+WPK04KD0MwzLZrG0se1hzBjSi5fyxlsiggoJHwh18PCFNn7tG43OWb6pdZ6Y+rMlmyNQ==}
     cpu: [arm]
@@ -392,6 +476,10 @@ packages:
   '@standard-schema/[email protected]':
     resolution: {integrity: sha512-l2aFy5jALhniG5HgqrD6jXLi/rUWrKvqN/qJx6yoJsgKhblVd+iqqU4RCXavm/jPityDo5TCvKMnpjKnOriy0w==}
 
+  '@steipete/[email protected]':
+    resolution: {integrity: sha512-cF8hS6rTohAFI1NAm2/HM9omBlw6V1DpwF6q5e9FB+l274HjtyirCgCc6QK2Rtuh7uDoqWHshFQZPsceyJuVgw==}
+    engines: {node: '>=22'}
+
   '@types/[email protected]':
     resolution: {integrity: sha512-Mw558oeA9fFbv65/y4mHtXDs9bPnFMZAL/jxdPFUpOHHIXX91mcgEHbS5Lahr+pwZFR8A7GQleRWeI6cGFC2UA==}
 
@@ -554,6 +642,20 @@ packages:
   [email protected]:
     resolution: {integrity: sha512-uTqF9MuPraAQ+IsnPf366RG4cP9RtUi7MLO1N3KEc+wb0a6yKpeL0lmk2IB1jY5KHPAlTc6T/JRdC/YqxHNwkQ==}
 
+  [email protected]:
+    resolution: {integrity: sha512-LDDSIu5J/4D4gFUuQQIEQpAC6maNEbMg4nC8JL/+Pe0cUDR86dtVZ09E2x5MwCh8f9yfktoaxt5x6UIVyzrajg==}
+    hasBin: true
+
+  [email protected]:
+    resolution: {integrity: sha512-IicUdXfXgI8OKrDPnoSjvBfeEF8PkKtm+CoLlg4LYe4ypc8U+T4r7730XYshdBGZdelg+JRw8GtCb2w/KaaZvw==}
+    engines: {node: ^20.19.0 || >=22.12.0}
+    hasBin: true
+    peerDependencies:
+      oxlint-tsgolint: '>=0.10.0'
+    peerDependenciesMeta:
+      oxlint-tsgolint:
+        optional: true
+
   [email protected]:
     resolution: {integrity: sha512-WUjGcAqP1gQacoQe+OBJsFA7Ld4DyXuUIjZ5cc75cLHvJ7dtNsTugphxIADwspS+AraAUePCKrSVtPLFj/F88w==}
 
@@ -844,6 +946,48 @@ snapshots:
       '@jridgewell/resolve-uri': 3.1.2
       '@jridgewell/sourcemap-codec': 1.5.5
 
+  '@oxlint-tsgolint/[email protected]':
+    optional: true
+
+  '@oxlint-tsgolint/[email protected]':
+    optional: true
+
+  '@oxlint-tsgolint/[email protected]':
+    optional: true
+
+  '@oxlint-tsgolint/[email protected]':
+    optional: true
+
+  '@oxlint-tsgolint/[email protected]':
+    optional: true
+
+  '@oxlint-tsgolint/[email protected]':
+    optional: true
+
+  '@oxlint/[email protected]':
+    optional: true
+
+  '@oxlint/[email protected]':
+    optional: true
+
+  '@oxlint/[email protected]':
+    optional: true
+
+  '@oxlint/[email protected]':
+    optional: true
+
+  '@oxlint/[email protected]':
+    optional: true
+
+  '@oxlint/[email protected]':
+    optional: true
+
+  '@oxlint/[email protected]':
+    optional: true
+
+  '@oxlint/[email protected]':
+    optional: true
+
   '@rollup/[email protected]':
     optional: true
 
@@ -912,6 +1056,8 @@ snapshots:
 
   '@standard-schema/[email protected]': {}
 
+  '@steipete/[email protected](patch_hash=4ff44e9d3b5770a7b751c7a3470572bdf485763c28ead8055468dd0ae9a6e986)': {}
+
   '@types/[email protected]':
     dependencies:
       '@types/deep-eql': 4.0.2
@@ -1096,6 +1242,27 @@ snapshots:
 
   [email protected]: {}
 
+  [email protected]:
+    optionalDependencies:
+      '@oxlint-tsgolint/darwin-arm64': 0.10.0
+      '@oxlint-tsgolint/darwin-x64': 0.10.0
+      '@oxlint-tsgolint/linux-arm64': 0.10.0
+      '@oxlint-tsgolint/linux-x64': 0.10.0
+      '@oxlint-tsgolint/win32-arm64': 0.10.0
+      '@oxlint-tsgolint/win32-x64': 0.10.0
+
+  [email protected]([email protected]):
+    optionalDependencies:
+      '@oxlint/darwin-arm64': 1.36.0
+      '@oxlint/darwin-x64': 1.36.0
+      '@oxlint/linux-arm64-gnu': 1.36.0
+      '@oxlint/linux-arm64-musl': 1.36.0
+      '@oxlint/linux-x64-gnu': 1.36.0
+      '@oxlint/linux-x64-musl': 1.36.0
+      '@oxlint/win32-arm64': 1.36.0
+      '@oxlint/win32-x64': 1.36.0
+      oxlint-tsgolint: 0.10.0
+
   [email protected]: {}
 
   [email protected]: {}

scripts/copy-dist-assets.js

@@ -7,10 +7,13 @@ const files = [
     from: resolve(root, 'src/lib/query-ids.json'),
     to: resolve(root, 'dist/lib/query-ids.json'),
   },
+  {
+    from: resolve(root, 'src/lib/features.json'),
+    to: resolve(root, 'dist/lib/features.json'),
+  },
 ];
 
 for (const file of files) {
   mkdirSync(dirname(file.to), { recursive: true });
   writeFileSync(file.to, readFileSync(file.from));
 }
-

scripts/update-query-ids.ts

@@ -11,8 +11,18 @@ const TARGET_OPERATIONS = [
   'CreateTweet',
   'CreateRetweet',
   'FavoriteTweet',
+  'DeleteBookmark',
   'TweetDetail',
   'SearchTimeline',
+  'Bookmarks',
+  'BookmarkFolderTimeline',
+  'Following',
+  'Followers',
+  'Likes',
+  'ExploreSidebar',
+  'ExplorePage',
+  'GenericTimelineById',
+  'TrendHistory',
 ] as const;
 
 type OperationName = (typeof TARGET_OPERATIONS)[number];

src/cli.ts

@@ -0,0 +1,35 @@
+#!/usr/bin/env node
+
+/**
+ * bird - CLI tool for posting tweets and replies
+ *
+ * Usage:
+ *   bird tweet "Hello world!"
+ *   bird reply <tweet-id> "This is a reply"
+ *   bird reply <tweet-url> "This is a reply"
+ *   bird read <tweet-id-or-url>
+ */
+
+import { createProgram, KNOWN_COMMANDS } from './cli/program.js';
+import { createCliContext } from './cli/shared.js';
+import { resolveCliInvocation } from './lib/cli-args.js';
+
+const rawArgs: string[] = process.argv.slice(2);
+const normalizedArgs: string[] = rawArgs[0] === '--' ? rawArgs.slice(1) : rawArgs;
+
+const ctx = createCliContext(normalizedArgs);
+
+const program = createProgram(ctx);
+
+const { argv, showHelp } = resolveCliInvocation(normalizedArgs, KNOWN_COMMANDS);
+
+if (showHelp) {
+  program.outputHelp();
+  process.exit(0);
+}
+
+if (argv) {
+  program.parse(argv);
+} else {
+  program.parse(['node', 'bird', ...normalizedArgs]);
+}

src/cli/pagination.ts

@@ -0,0 +1,79 @@
+export type PaginationCmdOpts = {
+  all?: boolean;
+  maxPages?: string;
+  cursor?: string;
+  delay?: string;
+};
+
+export function parsePositiveIntFlag(
+  raw: string | undefined,
+  flagName: string,
+): { ok: true; value: number | undefined } | { ok: false; error: string } {
+  if (raw === undefined) {
+    return { ok: true, value: undefined };
+  }
+  const value = Number.parseInt(raw, 10);
+  if (!Number.isFinite(value) || value <= 0) {
+    return { ok: false, error: `Invalid ${flagName}. Expected a positive integer.` };
+  }
+  return { ok: true, value };
+}
+
+export function parseNonNegativeIntFlag(
+  raw: string | undefined,
+  flagName: string,
+  defaultValue: number,
+): { ok: true; value: number } | { ok: false; error: string } {
+  const value = Number.parseInt(raw ?? String(defaultValue), 10);
+  if (!Number.isFinite(value) || value < 0) {
+    return { ok: false, error: `Invalid ${flagName}. Expected a non-negative integer.` };
+  }
+  return { ok: true, value };
+}
+
+export function parsePaginationFlags(
+  cmdOpts: PaginationCmdOpts,
+  opts?: {
+    maxPagesImpliesPagination?: boolean;
+    defaultDelayMs?: number;
+    includeDelay?: boolean;
+  },
+):
+  | {
+      ok: true;
+      usePagination: boolean;
+      maxPages?: number;
+      cursor?: string;
+      pageDelayMs?: number;
+    }
+  | { ok: false; error: string } {
+  const maxPagesImpliesPagination = opts?.maxPagesImpliesPagination ?? false;
+  const includeDelay = opts?.includeDelay ?? false;
+  const defaultDelayMs = opts?.defaultDelayMs ?? 1000;
+
+  const maxPages = parsePositiveIntFlag(cmdOpts.maxPages, '--max-pages');
+  if (!maxPages.ok) {
+    return maxPages;
+  }
+
+  const usePagination = Boolean(
+    cmdOpts.all || cmdOpts.cursor || (maxPagesImpliesPagination && maxPages.value !== undefined),
+  );
+
+  let pageDelayMs: number | undefined;
+  if (includeDelay) {
+    const delay = parseNonNegativeIntFlag(cmdOpts.delay, '--delay', defaultDelayMs);
+    if (!delay.ok) {
+      return delay;
+    }
+    pageDelayMs = delay.value;
+  }
+
+  return {
+    ok: true,
+    usePagination,
+    maxPages: maxPages.value,
+    cursor: cmdOpts.cursor,
+    pageDelayMs,
+  };
+}

src/cli/program.ts

@@ -0,0 +1,148 @@
+import { Command } from 'commander';
+import { registerBookmarksCommand } from '../commands/bookmarks.js';
+import { registerCheckCommand } from '../commands/check.js';
+import { registerHelpCommand } from '../commands/help.js';
+import { registerHomeCommand } from '../commands/home.js';
+import { registerListsCommand } from '../commands/lists.js';
+import { registerNewsCommand } from '../commands/news.js';
+import { registerPostCommands } from '../commands/post.js';
+import { registerQueryIdsCommand } from '../commands/query-ids.js';
+import { registerReadCommands } from '../commands/read.js';
+import { registerSearchCommands } from '../commands/search.js';
+import { registerUnbookmarkCommand } from '../commands/unbookmark.js';
+import { registerUserTweetsCommand } from '../commands/user-tweets.js';
+import { registerUserCommands } from '../commands/users.js';
+import { getCliVersion } from '../lib/version.js';
+import { type CliContext, collectCookieSource } from './shared.js';
+
+export const KNOWN_COMMANDS = new Set([
+  'tweet',
+  'reply',
+  'query-ids',
+  'read',
+  'replies',
+  'thread',
+  'search',
+  'mentions',
+  'bookmarks',
+  'unbookmark',
+  'following',
+  'followers',
+  'likes',
+  'lists',
+  'list-timeline',
+  'home',
+  'user-tweets',
+  'news',
+  'trending',
+  'help',
+  'whoami',
+  'check',
+]);
+
+export function createProgram(ctx: CliContext): Command {
+  const program: Command = new Command();
+
+  program.configureHelp({
+    showGlobalOptions: true,
+    styleTitle: (t) => ctx.colors.section(t),
+    styleUsage: (t) => ctx.colors.description(t),
+    styleCommandText: (t) => ctx.colors.command(t),
+    styleCommandDescription: (t) => ctx.colors.muted(t),
+    styleOptionTerm: (t) => ctx.colors.option(t),
+    styleOptionText: (t) => ctx.colors.option(t),
+    styleOptionDescription: (t) => ctx.colors.muted(t),
+    styleArgumentTerm: (t) => ctx.colors.argument(t),
+    styleArgumentText: (t) => ctx.colors.argument(t),
+    styleArgumentDescription: (t) => ctx.colors.muted(t),
+    styleSubcommandTerm: (t) => ctx.colors.command(t),
+    styleSubcommandText: (t) => ctx.colors.command(t),
+    styleSubcommandDescription: (t) => ctx.colors.muted(t),
+    styleDescriptionText: (t) => ctx.colors.muted(t),
+  });
+
+  const collect = (value: string, previous: string[] = []): string[] => {
+    previous.push(value);
+    return previous;
+  };
+
+  program.addHelpText(
+    'beforeAll',
+    () =>
+      `${ctx.colors.banner('bird')} ${ctx.colors.muted(getCliVersion())} ${ctx.colors.subtitle(
+        '— fast X CLI for tweeting, replying, and reading',
+      )}`,
+  );
+
+  program.name('bird').description('Post tweets and replies via Twitter/X GraphQL API').version(getCliVersion());
+
+  const formatExample = (command: string, description: string): string =>
+    `${ctx.colors.command(`  ${command}`)}\n${ctx.colors.muted(`    ${description}`)}`;
+
+  program.addHelpText(
+    'afterAll',
+    () =>
+      `\n${ctx.colors.section('Examples')}\n${[
+        formatExample('bird whoami', 'Show the logged-in account via GraphQL cookies'),
+        formatExample('bird --firefox-profile default-release whoami', 'Use Firefox profile cookies'),
+        formatExample('bird tweet "hello from bird"', 'Send a tweet'),
+        formatExample(
+          'bird 1234567890123456789 --json',
+          'Read a tweet (ID or URL shorthand for `read`) and print JSON',
+        ),
+      ].join('\n\n')}\n\n${ctx.colors.section('Shortcuts')}\n${[
+        formatExample('bird <tweet-id-or-url> [--json]', 'Shorthand for `bird read <tweet-id-or-url>`'),
+      ].join('\n\n')}\n\n${ctx.colors.section('JSON Output')}\n${ctx.colors.muted(
+        `  Add ${ctx.colors.option('--json')} to: read, replies, thread, search, mentions, bookmarks, likes, following, followers, lists, list-timeline, user-tweets, query-ids`,
+      )}\n${ctx.colors.muted(
+        `  Add ${ctx.colors.option('--json-full')} to include raw API response in ${ctx.colors.argument('_raw')} field (tweet commands only)`,
+      )}\n${ctx.colors.muted(`  (Run ${ctx.colors.command('bird <command> --help')} to see per-command flags.)`)}`,
+  );
+
+  program.addHelpText(
+    'afterAll',
+    () =>
+      `\n\n${ctx.colors.section('Config')}\n${ctx.colors.muted(
+        `  Reads ${ctx.colors.argument('~/.config/bird/config.json5')} and ${ctx.colors.argument('./.birdrc.json5')} (JSON5)`,
+      )}\n${ctx.colors.muted(
+        `  Supports: chromeProfile, firefoxProfile, cookieSource, cookieTimeoutMs, timeoutMs, quoteDepth`,
+      )}\n\n${ctx.colors.section('Env')}\n${ctx.colors.muted(
+        `  ${ctx.colors.option('NO_COLOR')}, ${ctx.colors.option('BIRD_TIMEOUT_MS')}, ${ctx.colors.option('BIRD_COOKIE_TIMEOUT_MS')}, ${ctx.colors.option('BIRD_QUOTE_DEPTH')}`,
+      )}`,
+  );
+
+  program
+    .option('--auth-token <token>', 'Twitter auth_token cookie')
+    .option('--ct0 <token>', 'Twitter ct0 cookie')
+    .option('--chrome-profile <name>', 'Chrome profile name for cookie extraction', ctx.config.chromeProfile)
+    .option('--firefox-profile <name>', 'Firefox profile name for cookie extraction', ctx.config.firefoxProfile)
+    .option('--cookie-timeout <ms>', 'Cookie extraction timeout in milliseconds (keychain/OS helpers)')
+    .option('--cookie-source <source>', 'Cookie source for browser cookie extraction (repeatable)', collectCookieSource)
+    .option('--media <path>', 'Attach media file (repeatable, up to 4 images or 1 video)', collect)
+    .option('--alt <text>', 'Alt text for the corresponding --media (repeatable)', collect)
+    .option('--timeout <ms>', 'Request timeout in milliseconds')
+    .option('--quote-depth <depth>', 'Max quoted tweet depth (default: 1; 0 disables)')
+    .option('--plain', 'Plain output (stable, no emoji, no color)')
+    .option('--no-emoji', 'Disable emoji output')
+    .option('--no-color', 'Disable ANSI colors (or set NO_COLOR)');
+
+  program.hook('preAction', (_thisCommand, actionCommand) => {
+    ctx.applyOutputFromCommand(actionCommand);
+  });
+
+  registerHelpCommand(program, ctx);
+  registerQueryIdsCommand(program, ctx);
+  registerPostCommands(program, ctx);
+  registerReadCommands(program, ctx);
+  registerSearchCommands(program, ctx);
+  registerBookmarksCommand(program, ctx);
+  registerUnbookmarkCommand(program, ctx);
+  registerListsCommand(program, ctx);
+  registerHomeCommand(program, ctx);
+  registerUserCommands(program, ctx);
+  registerUserTweetsCommand(program, ctx);
+  registerNewsCommand(program, ctx);
+  registerCheckCommand(program, ctx);
+
+  return program;
+}

src/cli/shared.ts

@@ -0,0 +1,431 @@
+import { existsSync, readFileSync } from 'node:fs';
+import { homedir } from 'node:os';
+import { join } from 'node:path';
+import type { Command } from 'commander';
+import JSON5 from 'json5';
+import kleur from 'kleur';
+import { type CookieSource, resolveCredentials } from '../lib/cookies.js';
+import { extractTweetId } from '../lib/extract-tweet-id.js';
+import {
+  hyperlink,
+  labelPrefix,
+  type OutputConfig,
+  resolveOutputConfigFromArgv,
+  resolveOutputConfigFromCommander,
+  statusPrefix,
+} from '../lib/output.js';
+import type { TweetData } from '../lib/twitter-client.js';
+
+export type BirdConfig = {
+  chromeProfile?: string;
+  firefoxProfile?: string;
+  cookieSource?: CookieSource | CookieSource[];
+  cookieTimeoutMs?: number;
+  timeoutMs?: number;
+  quoteDepth?: number;
+};
+
+export type MediaSpec = { path: string; alt?: string; mime: string; buffer: Buffer };
+
+export type CliContext = {
+  isTty: boolean;
+  getOutput: () => OutputConfig;
+  colors: {
+    banner: (t: string) => string;
+    subtitle: (t: string) => string;
+    section: (t: string) => string;
+    bullet: (t: string) => string;
+    command: (t: string) => string;
+    option: (t: string) => string;
+    argument: (t: string) => string;
+    description: (t: string) => string;
+    muted: (t: string) => string;
+    accent: (t: string) => string;
+  };
+  p: (kind: Parameters<typeof statusPrefix>[0]) => string;
+  l: (kind: Parameters<typeof labelPrefix>[0]) => string;
+  config: BirdConfig;
+  applyOutputFromCommand: (command: Command) => void;
+  resolveTimeoutFromOptions: (options: { timeout?: string | number }) => number | undefined;
+  resolveQuoteDepthFromOptions: (options: { quoteDepth?: string | number }) => number | undefined;
+  resolveCredentialsFromOptions: (opts: CredentialsOptions) => ReturnType<typeof resolveCredentials>;
+  loadMedia: (opts: { media: string[]; alts: string[] }) => MediaSpec[];
+  printTweets: (tweets: TweetData[], opts?: { json?: boolean; emptyMessage?: string; showSeparator?: boolean }) => void;
+  printTweetsResult: (
+    result: {
+      tweets?: TweetData[];
+      nextCursor?: string;
+    },
+    opts: {
+      json: boolean;
+      usePagination: boolean;
+      emptyMessage: string;
+    },
+  ) => void;
+  extractTweetId: (tweetIdOrUrl: string) => string;
+};
+
+const COOKIE_SOURCES: CookieSource[] = ['safari', 'chrome', 'firefox'];
+
+function parseCookieSource(value: string): CookieSource {
+  const normalized = value.trim().toLowerCase();
+  if (normalized === 'safari' || normalized === 'chrome' || normalized === 'firefox') {
+    return normalized;
+  }
+  throw new Error(`Invalid --cookie-source "${value}". Allowed: safari, chrome, firefox.`);
+}
+
+export const collectCookieSource = (value: string, previous: CookieSource[] = []): CookieSource[] => {
+  previous.push(parseCookieSource(value));
+  return previous;
+};
+
+function resolveCookieSourceOrder(input: unknown): CookieSource[] | undefined {
+  if (typeof input === 'string') {
+    return [parseCookieSource(input)];
+  }
+  if (Array.isArray(input)) {
+    const result: CookieSource[] = [];
+    for (const entry of input) {
+      if (typeof entry !== 'string') {
+        continue;
+      }
+      result.push(parseCookieSource(entry));
+    }
+    return result.length > 0 ? result : undefined;
+  }
+  return undefined;
+}
+
+function resolveTimeoutMs(...values: Array<string | number | undefined | null>): number | undefined {
+  for (const value of values) {
+    if (value === undefined || value === null || value === '') {
+      continue;
+    }
+    const parsed = typeof value === 'number' ? value : Number(value);
+    if (Number.isFinite(parsed) && parsed > 0) {
+      return parsed;
+    }
+  }
+  return undefined;
+}
+
+function resolveQuoteDepth(...values: Array<string | number | undefined | null>): number | undefined {
+  for (const value of values) {
+    if (value === undefined || value === null || value === '') {
+      continue;
+    }
+    const parsed = typeof value === 'number' ? value : Number.parseInt(value, 10);
+    if (Number.isFinite(parsed) && parsed >= 0) {
+      return Math.floor(parsed);
+    }
+  }
+  return undefined;
+}
+
+function detectMime(path: string): string | null {
+  const ext = path.toLowerCase();
+  if (ext.endsWith('.jpg') || ext.endsWith('.jpeg')) {
+    return 'image/jpeg';
+  }
+  if (ext.endsWith('.png')) {
+    return 'image/png';
+  }
+  if (ext.endsWith('.webp')) {
+    return 'image/webp';
+  }
+  if (ext.endsWith('.gif')) {
+    return 'image/gif';
+  }
+  if (ext.endsWith('.mp4') || ext.endsWith('.m4v')) {
+    return 'video/mp4';
+  }
+  if (ext.endsWith('.mov')) {
+    return 'video/quicktime';
+  }
+  return null;
+}
+
+function readConfigFile(path: string, warn: (message: string) => void): Partial<BirdConfig> {
+  if (!existsSync(path)) {
+    return {};
+  }
+  try {
+    const raw = readFileSync(path, 'utf8');
+    const parsed = JSON5.parse(raw) as Partial<BirdConfig>;
+    return parsed ?? {};
+  } catch (error) {
+    warn(`Failed to parse config at ${path}: ${error instanceof Error ? error.message : String(error)}`);
+    return {};
+  }
+}
+
+function loadConfig(warn: (message: string) => void): BirdConfig {
+  const globalPath = join(homedir(), '.config', 'bird', 'config.json5');
+  const localPath = join(process.cwd(), '.birdrc.json5');
+
+  return {
+    ...readConfigFile(globalPath, warn),
+    ...readConfigFile(localPath, warn),
+  };
+}
+
+type CredentialsOptions = {
+  authToken?: string;
+  ct0?: string;
+  chromeProfile?: string;
+  firefoxProfile?: string;
+  cookieSource?: CookieSource[];
+  cookieTimeout?: string | number;
+};
+
+export function createCliContext(normalizedArgs: string[], env: NodeJS.ProcessEnv = process.env): CliContext {
+  const isTty = process.stdout.isTTY;
+  let output: OutputConfig = resolveOutputConfigFromArgv(normalizedArgs, env, isTty);
+  kleur.enabled = output.color;
+
+  const wrap =
+    (styler: (text: string) => string): ((text: string) => string) =>
+    (text: string): string =>
+      isTty ? styler(text) : text;
+
+  const colors = {
+    banner: wrap((t) => kleur.bold().blue(t)),
+    subtitle: wrap((t) => kleur.dim(t)),
+    section: wrap((t) => kleur.bold().white(t)),
+    bullet: wrap((t) => kleur.blue(t)),
+    command: wrap((t) => kleur.bold().cyan(t)),
+    option: wrap((t) => kleur.cyan(t)),
+    argument: wrap((t) => kleur.magenta(t)),
+    description: wrap((t) => kleur.white(t)),
+    muted: wrap((t) => kleur.gray(t)),
+    accent: wrap((t) => kleur.green(t)),
+  };
+
+  const p = (kind: Parameters<typeof statusPrefix>[0]): string => {
+    const prefix = statusPrefix(kind, output);
+    if (output.plain || !output.color) {
+      return prefix;
+    }
+    if (kind === 'ok') {
+      return kleur.green(prefix);
+    }
+    if (kind === 'warn') {
+      return kleur.yellow(prefix);
+    }
+    if (kind === 'err') {
+      return kleur.red(prefix);
+    }
+    if (kind === 'info') {
+      return kleur.cyan(prefix);
+    }
+    return kleur.gray(prefix);
+  };
+
+  const l = (kind: Parameters<typeof labelPrefix>[0]): string => {
+    const prefix = labelPrefix(kind, output);
+    if (output.plain || !output.color) {
+      return prefix;
+    }
+    if (kind === 'url') {
+      return kleur.cyan(prefix);
+    }
+    if (kind === 'date') {
+      return kleur.magenta(prefix);
+    }
+    if (kind === 'source') {
+      return kleur.gray(prefix);
+    }
+    if (kind === 'engine') {
+      return kleur.blue(prefix);
+    }
+    if (kind === 'credentials') {
+      return kleur.yellow(prefix);
+    }
+    if (kind === 'user') {
+      return kleur.cyan(prefix);
+    }
+    if (kind === 'userId') {
+      return kleur.magenta(prefix);
+    }
+    if (kind === 'email') {
+      return kleur.green(prefix);
+    }
+    return kleur.gray(prefix);
+  };
+
+  const config = loadConfig((message) => {
+    console.error(colors.muted(`${p('warn')}${message}`));
+  });
+
+  function applyOutputFromCommand(command: Command): void {
+    const opts = command.optsWithGlobals() as { plain?: boolean; emoji?: boolean; color?: boolean };
+    output = resolveOutputConfigFromCommander(opts, env, isTty);
+    kleur.enabled = output.color;
+  }
+
+  function resolveTimeoutFromOptions(options: { timeout?: string | number }): number | undefined {
+    return resolveTimeoutMs(options.timeout, config.timeoutMs, env.BIRD_TIMEOUT_MS);
+  }
+
+  function resolveCookieTimeoutFromOptions(options: { cookieTimeout?: string | number }): number | undefined {
+    return resolveTimeoutMs(options.cookieTimeout, config.cookieTimeoutMs, env.BIRD_COOKIE_TIMEOUT_MS);
+  }
+
+  function resolveQuoteDepthFromOptions(options: { quoteDepth?: string | number }): number | undefined {
+    return resolveQuoteDepth(options.quoteDepth, config.quoteDepth, env.BIRD_QUOTE_DEPTH);
+  }
+
+  function resolveCredentialsFromOptions(opts: CredentialsOptions): ReturnType<typeof resolveCredentials> {
+    const cookieSource = opts.cookieSource?.length
+      ? opts.cookieSource
+      : (resolveCookieSourceOrder(config.cookieSource) ?? COOKIE_SOURCES);
+    return resolveCredentials({
+      authToken: opts.authToken,
+      ct0: opts.ct0,
+      cookieSource,
+      chromeProfile: opts.chromeProfile || config.chromeProfile,
+      firefoxProfile: opts.firefoxProfile || config.firefoxProfile,
+      cookieTimeoutMs: resolveCookieTimeoutFromOptions(opts),
+    });
+  }
+
+  function loadMedia(opts: { media: string[]; alts: string[] }): MediaSpec[] {
+    if (opts.media.length === 0) {
+      return [];
+    }
+    const specs: MediaSpec[] = [];
+    for (const [index, path] of opts.media.entries()) {
+      const mime = detectMime(path);
+      if (!mime) {
+        throw new Error(`Unsupported media type for ${path}. Supported: jpg, jpeg, png, webp, gif, mp4, mov`);
+      }
+      const buffer = readFileSync(path);
+      specs.push({ path, mime, buffer, alt: opts.alts[index] });
+    }
+
+    const videoCount = specs.filter((m) => m.mime.startsWith('video/')).length;
+    if (videoCount > 1) {
+      throw new Error('Only one video can be attached');
+    }
+    if (videoCount === 1 && specs.length > 1) {
+      throw new Error('Video cannot be combined with other media');
+    }
+    if (specs.length > 4) {
+      throw new Error('Maximum 4 media attachments');
+    }
+    return specs;
+  }
+
+  function printTweets(
+    tweets: TweetData[],
+    opts: { json?: boolean; emptyMessage?: string; showSeparator?: boolean } = {},
+  ) {
+    if (opts.json) {
+      console.log(JSON.stringify(tweets, null, 2));
+      return;
+    }
+    if (tweets.length === 0) {
+      console.log(opts.emptyMessage ?? 'No tweets found.');
+      return;
+    }
+    const useEmoji = output.emoji && !output.plain;
+    const articleLabel = useEmoji ? '📰' : 'Article:';
+    const mediaLabel = (type: 'photo' | 'video' | 'animated_gif'): string => {
+      if (useEmoji) {
+        return type === 'video' ? '🎬' : type === 'animated_gif' ? '🔄' : '🖼️';
+      }
+      return type === 'video' ? 'VIDEO:' : type === 'animated_gif' ? 'GIF:' : 'PHOTO:';
+    };
+    const quotePrefix = useEmoji ? { top: '┌─', mid: '│ ', bot: '└─' } : { top: '> ', mid: '> ', bot: '> ' };
+
+    for (const tweet of tweets) {
+      console.log(`\n@${tweet.author.username} (${tweet.author.name}):`);
+
+      // Display tweet text, with article indicator if present
+      if (tweet.article) {
+        // Full body mode: text starts with article title (from extractArticleText)
+        // Preview mode: text is short tweet intro that doesn't start with title
+        const hasFullBody = tweet.text.startsWith(tweet.article.title);
+        if (hasFullBody) {
+          console.log(`${articleLabel} ${tweet.text}`);
+        } else {
+          console.log(`${articleLabel} ${tweet.article.title}`);
+          if (tweet.article.previewText) {
+            console.log(`   ${tweet.article.previewText}`);
+          }
+        }
+      } else {
+        console.log(tweet.text);
+      }
+
+      // Display media attachments
+      if (tweet.media && tweet.media.length > 0) {
+        for (const m of tweet.media) {
+          console.log(`${mediaLabel(m.type)} ${m.url}`);
+        }
+      }
+
+      // Display quoted tweet
+      if (tweet.quotedTweet) {
+        console.log(`${quotePrefix.top} QT @${tweet.quotedTweet.author.username}:`);
+        const qtText = tweet.quotedTweet.article
+          ? `${articleLabel} ${tweet.quotedTweet.article.title}`
+          : tweet.quotedTweet.text;
+        // Indent and truncate quoted tweet text
+        const maxLen = 280;
+        const truncated = qtText.length > maxLen ? `${qtText.slice(0, maxLen)}...` : qtText;
+        for (const line of truncated.split('\n').slice(0, 4)) {
+          console.log(`${quotePrefix.mid}${line}`);
+        }
+        // Display quoted tweet media
+        if (tweet.quotedTweet.media && tweet.quotedTweet.media.length > 0) {
+          for (const m of tweet.quotedTweet.media) {
+            console.log(`${quotePrefix.mid}${mediaLabel(m.type)} ${m.url}`);
+          }
+        }
+        console.log(
+          `${quotePrefix.bot} https://x.com/${tweet.quotedTweet.author.username}/status/${tweet.quotedTweet.id}`,
+        );
+      }
+
+      if (tweet.createdAt) {
+        console.log(`${l('date')}${tweet.createdAt}`);
+      }
+      const tweetUrl = `https://x.com/${tweet.author.username}/status/${tweet.id}`;
+      console.log(`${l('url')}${hyperlink(tweetUrl, tweetUrl, output)}`);
+      if (opts.showSeparator ?? true) {
+        console.log('─'.repeat(50));
+      }
+    }
+  }
+
+  function printTweetsResult(
+    result: { tweets?: TweetData[]; nextCursor?: string },
+    opts: { json: boolean; usePagination: boolean; emptyMessage: string },
+  ) {
+    const tweets = result.tweets ?? [];
+    if (opts.json && opts.usePagination) {
+      console.log(JSON.stringify({ tweets, nextCursor: result.nextCursor ?? null }, null, 2));
+      return;
+    }
+    printTweets(tweets, { json: opts.json, emptyMessage: opts.emptyMessage });
+  }
+
+  return {
+    isTty,
+    getOutput: () => output,
+    colors,
+    p,
+    l,
+    config,
+    applyOutputFromCommand,
+    resolveTimeoutFromOptions,
+    resolveQuoteDepthFromOptions,
+    resolveCredentialsFromOptions,
+    loadMedia,
+    printTweets,
+    printTweetsResult,
+    extractTweetId,
+  };
+}

src/commands/bookmarks.ts

@@ -0,0 +1,86 @@
+import type { Command } from 'commander';
+import { parsePositiveIntFlag } from '../cli/pagination.js';
+import type { CliContext } from '../cli/shared.js';
+import { extractBookmarkFolderId } from '../lib/extract-bookmark-folder-id.js';
+import { TwitterClient } from '../lib/twitter-client.js';
+
+export function registerBookmarksCommand(program: Command, ctx: CliContext): void {
+  program
+    .command('bookmarks')
+    .description('Get your bookmarked tweets')
+    .option('-n, --count <number>', 'Number of bookmarks to fetch', '20')
+    .option('--folder-id <id>', 'Bookmark folder (collection) id')
+    .option('--all', 'Fetch all bookmarks (paged)')
+    .option('--max-pages <number>', 'Stop after N pages when using --all')
+    .option('--cursor <string>', 'Resume pagination from a cursor')
+    .option('--json', 'Output as JSON')
+    .option('--json-full', 'Output as JSON with full raw API response in _raw field')
+    .action(
+      async (cmdOpts: {
+        count?: string;
+        json?: boolean;
+        jsonFull?: boolean;
+        folderId?: string;
+        all?: boolean;
+        maxPages?: string;
+        cursor?: string;
+      }) => {
+        const opts = program.opts();
+        const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+        const count = Number.parseInt(cmdOpts.count || '20', 10);
+        const maxPagesParsed = parsePositiveIntFlag(cmdOpts.maxPages, '--max-pages');
+        if (!maxPagesParsed.ok) {
+          console.error(`${ctx.p('err')}${maxPagesParsed.error}`);
+          process.exit(1);
+        }
+        const maxPages = maxPagesParsed.value;
+
+        const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+        for (const warning of warnings) {
+          console.error(`${ctx.p('warn')}${warning}`);
+        }
+
+        if (!cookies.authToken || !cookies.ct0) {
+          console.error(`${ctx.p('err')}Missing required credentials`);
+          process.exit(1);
+        }
+
+        const usePagination = Boolean(cmdOpts.all || cmdOpts.cursor);
+        if (maxPages !== undefined && !usePagination) {
+          console.error(`${ctx.p('err')}--max-pages requires --all or --cursor.`);
+          process.exit(1);
+        }
+        if (!usePagination && (!Number.isFinite(count) || count <= 0)) {
+          console.error(`${ctx.p('err')}Invalid --count. Expected a positive integer.`);
+          process.exit(1);
+        }
+
+        const client = new TwitterClient({ cookies, timeoutMs });
+        const folderId = cmdOpts.folderId ? extractBookmarkFolderId(cmdOpts.folderId) : null;
+        if (cmdOpts.folderId && !folderId) {
+          console.error(`${ctx.p('err')}Invalid --folder-id. Expected numeric ID or https://x.com/i/bookmarks/<id>.`);
+          process.exit(1);
+        }
+        const includeRaw = cmdOpts.jsonFull ?? false;
+        const timelineOptions = { includeRaw };
+        const paginationOptions = { includeRaw, maxPages, cursor: cmdOpts.cursor };
+        const result = folderId
+          ? usePagination
+            ? await client.getAllBookmarkFolderTimeline(folderId, paginationOptions)
+            : await client.getBookmarkFolderTimeline(folderId, count, timelineOptions)
+          : usePagination
+            ? await client.getAllBookmarks(paginationOptions)
+            : await client.getBookmarks(count, timelineOptions);
+
+        if (result.success) {
+          const emptyMessage = folderId ? 'No bookmarks found in folder.' : 'No bookmarks found.';
+          const isJson = Boolean(cmdOpts.json || cmdOpts.jsonFull);
+          ctx.printTweetsResult(result, { json: isJson, usePagination, emptyMessage });
+        } else {
+          console.error(`${ctx.p('err')}Failed to fetch bookmarks: ${result.error}`);
+          process.exit(1);
+        }
+      },
+    );
+}

src/commands/check.ts

@@ -0,0 +1,48 @@
+import type { Command } from 'commander';
+import type { CliContext } from '../cli/shared.js';
+
+export function registerCheckCommand(program: Command, ctx: CliContext): void {
+  program
+    .command('check')
+    .description('Check credential availability')
+    .action(async () => {
+      const opts = program.opts();
+      const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+      console.log(`${ctx.p('info')}Credential check`);
+      console.log('─'.repeat(40));
+
+      if (cookies.authToken) {
+        console.log(`${ctx.p('ok')}auth_token: ${cookies.authToken.slice(0, 10)}...`);
+      } else {
+        console.log(`${ctx.p('err')}auth_token: not found`);
+      }
+
+      if (cookies.ct0) {
+        console.log(`${ctx.p('ok')}ct0: ${cookies.ct0.slice(0, 10)}...`);
+      } else {
+        console.log(`${ctx.p('err')}ct0: not found`);
+      }
+
+      if (cookies.source) {
+        console.log(`${ctx.l('source')}${cookies.source}`);
+      }
+
+      if (warnings.length > 0) {
+        console.log(`\n${ctx.p('warn')}Warnings:`);
+        for (const warning of warnings) {
+          console.log(`   - ${warning}`);
+        }
+      }
+
+      if (cookies.authToken && cookies.ct0) {
+        console.log(`\n${ctx.p('ok')}Ready to tweet!`);
+      } else {
+        console.log(`\n${ctx.p('err')}Missing credentials. Options:`);
+        console.log('   1. Login to x.com in Safari/Chrome/Firefox');
+        console.log('   2. Set AUTH_TOKEN and CT0 environment variables');
+        console.log('   3. Use --auth-token and --ct0 flags');
+        process.exit(1);
+      }
+    });
+}

src/commands/help.ts

@@ -0,0 +1,23 @@
+import type { Command } from 'commander';
+import type { CliContext } from '../cli/shared.js';
+
+export function registerHelpCommand(program: Command, ctx: CliContext): void {
+  program
+    .command('help [command]')
+    .description('Show help for a command')
+    .action((commandName?: string) => {
+      if (!commandName) {
+        program.outputHelp();
+        return;
+      }
+
+      const cmd = program.commands.find((c) => c.name() === commandName);
+      if (!cmd) {
+        console.error(`${ctx.p('err')}Unknown command: ${commandName}`);
+        process.exitCode = 2;
+        return;
+      }
+
+      cmd.outputHelp();
+    });
+}

src/commands/home.ts

@@ -0,0 +1,51 @@
+import type { Command } from 'commander';
+import type { CliContext } from '../cli/shared.js';
+import { TwitterClient } from '../lib/twitter-client.js';
+
+export function registerHomeCommand(program: Command, ctx: CliContext): void {
+  program
+    .command('home')
+    .description('Get your home timeline ("For You" feed)')
+    .option('-n, --count <number>', 'Number of tweets to fetch', '20')
+    .option('--following', 'Get "Following" feed (chronological) instead of "For You"')
+    .option('--json', 'Output as JSON')
+    .option('--json-full', 'Output as JSON with full raw API response in _raw field')
+    .action(async (cmdOpts: { count?: string; following?: boolean; json?: boolean; jsonFull?: boolean }) => {
+      const opts = program.opts();
+      const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+      const count = Number.parseInt(cmdOpts.count || '20', 10);
+
+      const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+      for (const warning of warnings) {
+        console.error(`${ctx.p('warn')}${warning}`);
+      }
+
+      if (!cookies.authToken || !cookies.ct0) {
+        console.error(`${ctx.p('err')}Missing required credentials`);
+        process.exit(1);
+      }
+
+      if (!Number.isFinite(count) || count <= 0) {
+        console.error(`${ctx.p('err')}Invalid --count. Expected a positive integer.`);
+        process.exit(1);
+      }
+
+      const client = new TwitterClient({ cookies, timeoutMs });
+      const includeRaw = cmdOpts.jsonFull ?? false;
+
+      const result = cmdOpts.following
+        ? await client.getHomeLatestTimeline(count, { includeRaw })
+        : await client.getHomeTimeline(count, { includeRaw });
+
+      if (result.success) {
+        const feedType = cmdOpts.following ? 'Following' : 'For You';
+        const emptyMessage = `No tweets found in ${feedType} timeline.`;
+        const isJson = Boolean(cmdOpts.json || cmdOpts.jsonFull);
+        ctx.printTweets(result.tweets, { json: isJson, emptyMessage });
+      } else {
+        console.error(`${ctx.p('err')}Failed to fetch home timeline: ${result.error}`);
+        process.exit(1);
+      }
+    });
+}

src/commands/lists.ts

@@ -0,0 +1,155 @@
+// ABOUTME: CLI command for fetching Twitter Lists.
+// ABOUTME: Supports listing owned lists, memberships, and list timelines.
+
+import type { Command } from 'commander';
+import { parsePaginationFlags } from '../cli/pagination.js';
+import type { CliContext } from '../cli/shared.js';
+import { extractListId } from '../lib/extract-list-id.js';
+import { hyperlink } from '../lib/output.js';
+import type { TwitterList } from '../lib/twitter-client.js';
+import { TwitterClient } from '../lib/twitter-client.js';
+
+function printLists(lists: TwitterList[], ctx: CliContext): void {
+  if (lists.length === 0) {
+    console.log('No lists found.');
+    return;
+  }
+
+  for (const list of lists) {
+    const visibility = list.isPrivate ? '[private]' : '[public]';
+    console.log(`${list.name} ${ctx.colors.muted(visibility)}`);
+    if (list.description) {
+      console.log(`  ${list.description.slice(0, 100)}${list.description.length > 100 ? '...' : ''}`);
+    }
+    console.log(`  ${ctx.p('info')}${list.memberCount?.toLocaleString() ?? 0} members`);
+    if (list.owner) {
+      console.log(`  ${ctx.colors.muted(`Owner: @${list.owner.username}`)}`);
+    }
+    const listUrl = `https://x.com/i/lists/${list.id}`;
+    console.log(`  ${ctx.colors.accent(hyperlink(listUrl, listUrl, ctx.getOutput()))}`);
+    console.log('──────────────────────────────────────────────────');
+  }
+}
+
+export function registerListsCommand(program: Command, ctx: CliContext): void {
+  program
+    .command('lists')
+    .description('Get your Twitter lists')
+    .option('--member-of', 'Show lists you are a member of (instead of owned lists)')
+    .option('-n, --count <number>', 'Number of lists to fetch', '100')
+    .option('--json', 'Output as JSON')
+    .action(async (cmdOpts: { memberOf?: boolean; count?: string; json?: boolean }) => {
+      const opts = program.opts();
+      const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+      const count = Number.parseInt(cmdOpts.count || '100', 10);
+
+      const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+      for (const warning of warnings) {
+        console.error(`${ctx.p('warn')}${warning}`);
+      }
+
+      if (!cookies.authToken || !cookies.ct0) {
+        console.error(`${ctx.p('err')}Missing required credentials`);
+        process.exit(1);
+      }
+
+      const client = new TwitterClient({ cookies, timeoutMs });
+
+      const result = cmdOpts.memberOf ? await client.getListMemberships(count) : await client.getOwnedLists(count);
+
+      if (result.success && result.lists) {
+        if (cmdOpts.json) {
+          console.log(JSON.stringify(result.lists, null, 2));
+        } else {
+          const emptyMessage = cmdOpts.memberOf ? 'You are not a member of any lists.' : 'You do not own any lists.';
+          if (result.lists.length === 0) {
+            console.log(emptyMessage);
+          } else {
+            printLists(result.lists, ctx);
+          }
+        }
+      } else {
+        console.error(`${ctx.p('err')}Failed to fetch lists: ${result.error}`);
+        process.exit(1);
+      }
+    });
+
+  program
+    .command('list-timeline <list-id-or-url>')
+    .description('Get tweets from a list timeline')
+    .option('-n, --count <number>', 'Number of tweets to fetch', '20')
+    .option('--all', 'Fetch all tweets from list (paged). WARNING: your account might get banned using this flag')
+    .option('--max-pages <number>', 'Fetch N pages (implies --all)')
+    .option('--cursor <string>', 'Resume pagination from a cursor')
+    .option('--json', 'Output as JSON')
+    .option('--json-full', 'Output as JSON with full raw API response in _raw field')
+    .action(
+      async (
+        listIdOrUrl: string,
+        cmdOpts: {
+          count?: string;
+          json?: boolean;
+          jsonFull?: boolean;
+          all?: boolean;
+          maxPages?: string;
+          cursor?: string;
+        },
+      ) => {
+        const opts = program.opts();
+        const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+        const quoteDepth = ctx.resolveQuoteDepthFromOptions(opts);
+        const count = Number.parseInt(cmdOpts.count || '20', 10);
+
+        const pagination = parsePaginationFlags(cmdOpts, { maxPagesImpliesPagination: true });
+        if (!pagination.ok) {
+          console.error(`${ctx.p('err')}${pagination.error}`);
+          process.exit(1);
+        }
+
+        const listId = extractListId(listIdOrUrl);
+        if (!listId) {
+          console.error(`${ctx.p('err')}Invalid list ID or URL. Expected numeric ID or https://x.com/i/lists/<id>.`);
+          process.exit(2);
+        }
+
+        const usePagination = pagination.usePagination;
+        if (!usePagination && (!Number.isFinite(count) || count <= 0)) {
+          console.error(`${ctx.p('err')}Invalid --count. Expected a positive integer.`);
+          process.exit(1);
+        }
+
+        const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+        for (const warning of warnings) {
+          console.error(`${ctx.p('warn')}${warning}`);
+        }
+
+        if (!cookies.authToken || !cookies.ct0) {
+          console.error(`${ctx.p('err')}Missing required credentials`);
+          process.exit(1);
+        }
+
+        const client = new TwitterClient({ cookies, timeoutMs, quoteDepth });
+        const includeRaw = cmdOpts.jsonFull ?? false;
+        const timelineOptions = { includeRaw };
+        const paginationOptions = { includeRaw, maxPages: pagination.maxPages, cursor: pagination.cursor };
+
+        const result = usePagination
+          ? await client.getAllListTimeline(listId, paginationOptions)
+          : await client.getListTimeline(listId, count, timelineOptions);
+
+        if (result.success) {
+          const isJson = Boolean(cmdOpts.json || cmdOpts.jsonFull);
+          ctx.printTweetsResult(result, {
+            json: isJson,
+            usePagination,
+            emptyMessage: 'No tweets found in this list.',
+          });
+        } else {
+          console.error(`${ctx.p('err')}Failed to fetch list timeline: ${result.error}`);
+          process.exit(1);
+        }
+      },
+    );
+}

src/commands/news.ts

@@ -0,0 +1,172 @@
+import type { Command } from 'commander';
+import type { CliContext } from '../cli/shared.js';
+import { TwitterClient } from '../lib/twitter-client.js';
+import type { ExploreTab, NewsItem } from '../lib/twitter-client-news.js';
+
+function formatPostCount(count: number): string {
+  if (count >= 1_000_000) {
+    return `${(count / 1_000_000).toFixed(1)}M`;
+  }
+  if (count >= 1_000) {
+    return `${(count / 1_000).toFixed(1)}K`;
+  }
+  return String(count);
+}
+
+function printNewsItems(
+  items: NewsItem[],
+  ctx: CliContext,
+  opts: { json?: boolean; emptyMessage?: string; tweetLimit?: number } = {},
+): void {
+  if (opts.json) {
+    console.log(JSON.stringify(items, null, 2));
+    return;
+  }
+
+  if (items.length === 0) {
+    console.log(opts.emptyMessage ?? 'No news items found.');
+    return;
+  }
+
+  for (const item of items) {
+    const categoryLabel = item.category ? `[${item.category}]` : '';
+    console.log(`\n${ctx.colors.accent(categoryLabel)} ${ctx.colors.command(item.headline)}`);
+
+    if (item.description) {
+      console.log(`  ${ctx.colors.muted(item.description)}`);
+    }
+
+    const meta: string[] = [];
+    if (item.timeAgo) {
+      meta.push(item.timeAgo);
+    }
+    if (item.postCount) {
+      meta.push(`${formatPostCount(item.postCount)} posts`);
+    }
+    if (meta.length > 0) {
+      console.log(`  ${ctx.colors.muted(meta.join(' | '))}`);
+    }
+
+    if (item.url) {
+      console.log(`  ${ctx.l('url')}${item.url}`);
+    }
+
+    // Print related tweets if available
+    if (item.tweets && item.tweets.length > 0) {
+      console.log(`  ${ctx.colors.section('Related tweets:')}`);
+      const tweetLimit = opts.tweetLimit ?? item.tweets.length;
+      for (const tweet of item.tweets.slice(0, tweetLimit)) {
+        console.log(
+          `    @${tweet.author.username}: ${tweet.text.slice(0, 100)}${tweet.text.length > 100 ? '...' : ''}`,
+        );
+      }
+    }
+
+    console.log(ctx.colors.muted('─'.repeat(50)));
+  }
+}
+
+export function registerNewsCommand(program: Command, ctx: CliContext): void {
+  program
+    .command('news')
+    .alias('trending')
+    .description('Fetch AI-curated news and trending topics from Explore tabs')
+    .option('-n, --count <number>', 'Number of items to fetch', '10')
+    .option('--ai-only', 'Show only AI-curated news items')
+    .option('--with-tweets', 'Also fetch related tweets for each news item')
+    .option('--tweets-per-item <number>', 'Number of tweets to fetch per news item (default: 5)', '5')
+    .option('--for-you', 'Fetch only from For You tab')
+    .option('--news-only', 'Fetch only from News tab')
+    .option('--sports', 'Fetch only from Sports tab')
+    .option('--entertainment', 'Fetch only from Entertainment tab')
+    .option('--trending-only', 'Fetch only from Trending tab')
+    .option('--json', 'Output as JSON')
+    .option('--json-full', 'Output as JSON with full raw API response in _raw field')
+    .action(
+      async (cmdOpts: {
+        count?: string;
+        aiOnly?: boolean;
+        withTweets?: boolean;
+        tweetsPerItem?: string;
+        forYou?: boolean;
+        newsOnly?: boolean;
+        sports?: boolean;
+        entertainment?: boolean;
+        trendingOnly?: boolean;
+        json?: boolean;
+        jsonFull?: boolean;
+      }) => {
+        const opts = program.opts();
+        const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+        const quoteDepth = ctx.resolveQuoteDepthFromOptions(opts);
+        const count = Number.parseInt(cmdOpts.count || '10', 10);
+        const tweetsPerItem = Number.parseInt(cmdOpts.tweetsPerItem || '5', 10);
+
+        const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+        for (const warning of warnings) {
+          console.error(`${ctx.p('warn')}${warning}`);
+        }
+
+        if (Number.isNaN(count) || count < 1) {
+          console.error(`${ctx.p('err')}--count must be a positive number`);
+          process.exit(1);
+        }
+
+        if (Number.isNaN(tweetsPerItem) || tweetsPerItem < 1) {
+          console.error(`${ctx.p('err')}--tweets-per-item must be a positive number`);
+          process.exit(1);
+        }
+
+        if (!cookies.authToken || !cookies.ct0) {
+          console.error(`${ctx.p('err')}Missing required credentials`);
+          process.exit(1);
+        }
+
+        // Determine which tabs to fetch from
+        const tabs: ExploreTab[] = [];
+        if (cmdOpts.forYou) {
+          tabs.push('forYou');
+        }
+        if (cmdOpts.newsOnly) {
+          tabs.push('news');
+        }
+        if (cmdOpts.sports) {
+          tabs.push('sports');
+        }
+        if (cmdOpts.entertainment) {
+          tabs.push('entertainment');
+        }
+        if (cmdOpts.trendingOnly) {
+          tabs.push('trending');
+        }
+
+        // If no specific tabs selected, use defaults (all tabs except trending)
+        const tabsToFetch = tabs.length > 0 ? tabs : undefined;
+
+        const client = new TwitterClient({ cookies, timeoutMs, quoteDepth });
+        const includeRaw = cmdOpts.jsonFull ?? false;
+        const withTweets = cmdOpts.withTweets ?? false;
+        const aiOnly = cmdOpts.aiOnly ?? false;
+
+        const result = await client.getNews(count, {
+          includeRaw,
+          withTweets,
+          tweetsPerItem,
+          aiOnly,
+          tabs: tabsToFetch,
+        });
+
+        if (result.success) {
+          printNewsItems(result.items, ctx, {
+            json: cmdOpts.json || cmdOpts.jsonFull,
+            emptyMessage: 'No news items found.',
+            tweetLimit: withTweets ? tweetsPerItem : undefined,
+          });
+        } else {
+          console.error(`${ctx.p('err')}Failed to fetch news: ${result.error}`);
+          process.exit(1);
+        }
+      },
+    );
+}

src/commands/post.ts

@@ -0,0 +1,119 @@
+import type { Command } from 'commander';
+import type { CliContext, MediaSpec } from '../cli/shared.js';
+import { formatTweetUrlLine } from '../lib/output.js';
+import { TwitterClient } from '../lib/twitter-client.js';
+
+async function uploadMediaOrExit(
+  client: TwitterClient,
+  media: MediaSpec[],
+  ctx: CliContext,
+): Promise<string[] | undefined> {
+  if (media.length === 0) {
+    return undefined;
+  }
+
+  const uploaded: string[] = [];
+  for (const item of media) {
+    const res = await client.uploadMedia({ data: item.buffer, mimeType: item.mime, alt: item.alt });
+    if (!res.success || !res.mediaId) {
+      console.error(`${ctx.p('err')}Media upload failed: ${res.error ?? 'Unknown error'}`);
+      process.exit(1);
+    }
+    uploaded.push(res.mediaId);
+  }
+  return uploaded;
+}
+
+export function registerPostCommands(program: Command, ctx: CliContext): void {
+  program
+    .command('tweet')
+    .description('Post a new tweet')
+    .argument('<text>', 'Tweet text')
+    .action(async (text: string) => {
+      const opts = program.opts();
+      const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+      const quoteDepth = ctx.resolveQuoteDepthFromOptions(opts);
+      let media: MediaSpec[] = [];
+      try {
+        media = ctx.loadMedia({ media: opts.media ?? [], alts: opts.alt ?? [] });
+      } catch (error) {
+        console.error(`${ctx.p('err')}${error instanceof Error ? error.message : String(error)}`);
+        process.exit(1);
+      }
+
+      const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+      for (const warning of warnings) {
+        console.error(`${ctx.p('warn')}${warning}`);
+      }
+
+      if (!cookies.authToken || !cookies.ct0) {
+        console.error(`${ctx.p('err')}Missing required credentials`);
+        process.exit(1);
+      }
+
+      if (cookies.source) {
+        console.error(`${ctx.l('source')}${cookies.source}`);
+      }
+
+      const client = new TwitterClient({ cookies, timeoutMs, quoteDepth });
+      const mediaIds = await uploadMediaOrExit(client, media, ctx);
+      const result = await client.tweet(text, mediaIds);
+
+      if (result.success) {
+        console.log(`${ctx.p('ok')}Tweet posted successfully!`);
+        console.log(formatTweetUrlLine(result.tweetId, ctx.getOutput()));
+      } else {
+        console.error(`${ctx.p('err')}Failed to post tweet: ${result.error}`);
+        process.exit(1);
+      }
+    });
+
+  program
+    .command('reply')
+    .description('Reply to an existing tweet')
+    .argument('<tweet-id-or-url>', 'Tweet ID or URL to reply to')
+    .argument('<text>', 'Reply text')
+    .action(async (tweetIdOrUrl: string, text: string) => {
+      const opts = program.opts();
+      const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+      const quoteDepth = ctx.resolveQuoteDepthFromOptions(opts);
+      let media: MediaSpec[] = [];
+      try {
+        media = ctx.loadMedia({ media: opts.media ?? [], alts: opts.alt ?? [] });
+      } catch (error) {
+        console.error(`${ctx.p('err')}${error instanceof Error ? error.message : String(error)}`);
+        process.exit(1);
+      }
+      const tweetId = ctx.extractTweetId(tweetIdOrUrl);
+
+      const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+      for (const warning of warnings) {
+        console.error(`${ctx.p('warn')}${warning}`);
+      }
+
+      if (!cookies.authToken || !cookies.ct0) {
+        console.error(`${ctx.p('err')}Missing required credentials`);
+        process.exit(1);
+      }
+
+      if (cookies.source) {
+        console.error(`${ctx.l('source')}${cookies.source}`);
+      }
+
+      console.error(`${ctx.p('info')}Replying to tweet: ${tweetId}`);
+
+      const client = new TwitterClient({ cookies, timeoutMs, quoteDepth });
+      const mediaIds = await uploadMediaOrExit(client, media, ctx);
+      const result = await client.reply(text, tweetId, mediaIds);
+
+      if (result.success) {
+        console.log(`${ctx.p('ok')}Reply posted successfully!`);
+        console.log(formatTweetUrlLine(result.tweetId, ctx.getOutput()));
+      } else {
+        console.error(`${ctx.p('err')}Failed to post reply: ${result.error}`);
+        process.exit(1);
+      }
+    });
+}

src/commands/query-ids.ts

@@ -0,0 +1,103 @@
+import type { Command } from 'commander';
+import type { CliContext } from '../cli/shared.js';
+import {
+  type FeatureOverrides,
+  getFeatureOverridesSnapshot,
+  refreshFeatureOverridesCache,
+} from '../lib/runtime-features.js';
+import { runtimeQueryIds } from '../lib/runtime-query-ids.js';
+
+function countFeatureOverrides(overrides: FeatureOverrides): number {
+  let count = 0;
+  if (overrides.global) {
+    count += Object.keys(overrides.global).length;
+  }
+  if (overrides.sets) {
+    for (const setOverrides of Object.values(overrides.sets)) {
+      count += Object.keys(setOverrides).length;
+    }
+  }
+  return count;
+}
+
+export function registerQueryIdsCommand(program: Command, ctx: CliContext): void {
+  program
+    .command('query-ids')
+    .description('Show or refresh cached Twitter GraphQL query IDs')
+    .option('--json', 'Output as JSON')
+    .option('--fresh', 'Force refresh (downloads X client bundles)', false)
+    .action(async (cmdOpts: { json?: boolean; fresh?: boolean }) => {
+      const operations = [
+        'CreateTweet',
+        'CreateRetweet',
+        'FavoriteTweet',
+        'TweetDetail',
+        'SearchTimeline',
+        'UserArticlesTweets',
+        'Bookmarks',
+        'Following',
+        'Followers',
+        'Likes',
+      ];
+
+      if (cmdOpts.fresh) {
+        console.error(`${ctx.p('info')}Refreshing GraphQL query IDs…`);
+        await runtimeQueryIds.refresh(operations, { force: true });
+        console.error(`${ctx.p('info')}Refreshing feature overrides…`);
+        await refreshFeatureOverridesCache();
+      }
+
+      const featureSnapshot = getFeatureOverridesSnapshot();
+      const info = await runtimeQueryIds.getSnapshotInfo();
+      if (!info) {
+        if (cmdOpts.json) {
+          console.log(
+            JSON.stringify(
+              {
+                cached: false,
+                cachePath: runtimeQueryIds.cachePath,
+                featuresPath: featureSnapshot.cachePath,
+                features: featureSnapshot.overrides,
+              },
+              null,
+              2,
+            ),
+          );
+          return;
+        }
+        console.log(`${ctx.p('warn')}No cached query IDs yet.`);
+        console.log(`${ctx.p('info')}Run: bird query-ids --fresh`);
+        console.log(`features_path: ${featureSnapshot.cachePath}`);
+        return;
+      }
+
+      if (cmdOpts.json) {
+        console.log(
+          JSON.stringify(
+            {
+              cached: true,
+              cachePath: info.cachePath,
+              fetchedAt: info.snapshot.fetchedAt,
+              isFresh: info.isFresh,
+              ageMs: info.ageMs,
+              ids: info.snapshot.ids,
+              discovery: info.snapshot.discovery,
+              featuresPath: featureSnapshot.cachePath,
+              features: featureSnapshot.overrides,
+            },
+            null,
+            2,
+          ),
+        );
+        return;
+      }
+
+      console.log(`${ctx.p('ok')}GraphQL query IDs cached`);
+      console.log(`path: ${info.cachePath}`);
+      console.log(`fetched_at: ${info.snapshot.fetchedAt}`);
+      console.log(`fresh: ${info.isFresh ? 'yes' : 'no'}`);
+      console.log(`ops: ${Object.keys(info.snapshot.ids).length}`);
+      console.log(`features_path: ${featureSnapshot.cachePath}`);
+      console.log(`features: ${countFeatureOverrides(featureSnapshot.overrides)}`);
+    });
+}

src/commands/read.ts

@@ -0,0 +1,204 @@
+import type { Command } from 'commander';
+import { parsePaginationFlags } from '../cli/pagination.js';
+import type { CliContext } from '../cli/shared.js';
+import { formatStatsLine } from '../lib/output.js';
+import { TwitterClient } from '../lib/twitter-client.js';
+
+export function registerReadCommands(program: Command, ctx: CliContext): void {
+  program
+    .command('read')
+    .description('Read/fetch a tweet by ID or URL')
+    .argument('<tweet-id-or-url>', 'Tweet ID or URL to read')
+    .option('--json', 'Output as JSON')
+    .option('--json-full', 'Output as JSON with full raw API response in _raw field')
+    .action(async (tweetIdOrUrl: string, cmdOpts: { json?: boolean; jsonFull?: boolean }) => {
+      const opts = program.opts();
+      const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+      const quoteDepth = ctx.resolveQuoteDepthFromOptions(opts);
+
+      const tweetId = ctx.extractTweetId(tweetIdOrUrl);
+
+      const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+      for (const warning of warnings) {
+        console.error(`${ctx.p('warn')}${warning}`);
+      }
+
+      if (!cookies.authToken || !cookies.ct0) {
+        console.error(`${ctx.p('err')}Missing required credentials`);
+        process.exit(1);
+      }
+
+      const client = new TwitterClient({ cookies, timeoutMs, quoteDepth });
+      const includeRaw = cmdOpts.jsonFull ?? false;
+      const result = await client.getTweet(tweetId, { includeRaw });
+
+      if (result.success && result.tweet) {
+        if (cmdOpts.json || cmdOpts.jsonFull) {
+          console.log(JSON.stringify(result.tweet, null, 2));
+        } else {
+          ctx.printTweets([result.tweet], { showSeparator: false });
+          console.log(formatStatsLine(result.tweet, ctx.getOutput()));
+        }
+      } else {
+        console.error(`${ctx.p('err')}Failed to read tweet: ${result.error}`);
+        process.exit(1);
+      }
+    });
+
+  program
+    .command('replies')
+    .description('List replies to a tweet (by ID or URL)')
+    .argument('<tweet-id-or-url>', 'Tweet ID or URL')
+    .option('--all', 'Fetch all replies (paged)')
+    .option('--max-pages <number>', 'Fetch N pages (implies pagination)')
+    .option('--delay <ms>', 'Delay in ms between page fetches', '1000')
+    .option('--cursor <string>', 'Resume pagination from a cursor')
+    .option('--json', 'Output as JSON')
+    .option('--json-full', 'Output as JSON with full raw API response in _raw field')
+    .action(
+      async (
+        tweetIdOrUrl: string,
+        cmdOpts: {
+          all?: boolean;
+          maxPages?: string;
+          delay?: string;
+          cursor?: string;
+          json?: boolean;
+          jsonFull?: boolean;
+        },
+      ) => {
+        const opts = program.opts();
+        const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+        const quoteDepth = ctx.resolveQuoteDepthFromOptions(opts);
+        const tweetId = ctx.extractTweetId(tweetIdOrUrl);
+
+        const pagination = parsePaginationFlags(cmdOpts, { maxPagesImpliesPagination: true, includeDelay: true });
+        if (!pagination.ok) {
+          console.error(`${ctx.p('err')}${pagination.error}`);
+          process.exit(1);
+        }
+
+        const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+        for (const warning of warnings) {
+          console.error(`${ctx.p('warn')}${warning}`);
+        }
+
+        if (!cookies.authToken || !cookies.ct0) {
+          console.error(`${ctx.p('err')}Missing required credentials`);
+          process.exit(1);
+        }
+
+        const client = new TwitterClient({ cookies, timeoutMs, quoteDepth });
+        const includeRaw = cmdOpts.jsonFull ?? false;
+
+        const result = pagination.usePagination
+          ? await client.getRepliesPaged(tweetId, {
+              includeRaw,
+              maxPages: pagination.maxPages,
+              cursor: pagination.cursor,
+              pageDelayMs: pagination.pageDelayMs,
+            })
+          : await client.getReplies(tweetId, { includeRaw });
+
+        const isJson = Boolean(cmdOpts.json || cmdOpts.jsonFull);
+        if (result.tweets) {
+          ctx.printTweetsResult(result, {
+            json: isJson,
+            usePagination: pagination.usePagination,
+            emptyMessage: 'No replies found.',
+          });
+
+          // Show pagination hint if there's more
+          if (result.nextCursor && !isJson) {
+            console.error(`${ctx.p('info')}More replies available. Use --cursor "${result.nextCursor}" to continue.`);
+          }
+        }
+
+        if (!result.success) {
+          console.error(`${ctx.p('err')}Failed to fetch replies: ${result.error}`);
+          process.exit(1);
+        }
+      },
+    );
+
+  program
+    .command('thread')
+    .description('Show the full conversation thread containing the tweet')
+    .argument('<tweet-id-or-url>', 'Tweet ID or URL')
+    .option('--all', 'Fetch all thread tweets (paged)')
+    .option('--max-pages <number>', 'Fetch N pages (implies pagination)')
+    .option('--delay <ms>', 'Delay in ms between page fetches', '1000')
+    .option('--cursor <string>', 'Resume pagination from a cursor')
+    .option('--json', 'Output as JSON')
+    .option('--json-full', 'Output as JSON with full raw API response in _raw field')
+    .action(
+      async (
+        tweetIdOrUrl: string,
+        cmdOpts: {
+          all?: boolean;
+          maxPages?: string;
+          delay?: string;
+          cursor?: string;
+          json?: boolean;
+          jsonFull?: boolean;
+        },
+      ) => {
+        const opts = program.opts();
+        const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+        const quoteDepth = ctx.resolveQuoteDepthFromOptions(opts);
+        const tweetId = ctx.extractTweetId(tweetIdOrUrl);
+
+        const pagination = parsePaginationFlags(cmdOpts, { maxPagesImpliesPagination: true, includeDelay: true });
+        if (!pagination.ok) {
+          console.error(`${ctx.p('err')}${pagination.error}`);
+          process.exit(1);
+        }
+
+        const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+        for (const warning of warnings) {
+          console.error(`${ctx.p('warn')}${warning}`);
+        }
+
+        if (!cookies.authToken || !cookies.ct0) {
+          console.error(`${ctx.p('err')}Missing required credentials`);
+          process.exit(1);
+        }
+
+        const client = new TwitterClient({ cookies, timeoutMs, quoteDepth });
+        const includeRaw = cmdOpts.jsonFull ?? false;
+
+        const result = pagination.usePagination
+          ? await client.getThreadPaged(tweetId, {
+              includeRaw,
+              maxPages: pagination.maxPages,
+              cursor: pagination.cursor,
+              pageDelayMs: pagination.pageDelayMs,
+            })
+          : await client.getThread(tweetId, { includeRaw });
+
+        const isJson = Boolean(cmdOpts.json || cmdOpts.jsonFull);
+        if (result.tweets) {
+          ctx.printTweetsResult(result, {
+            json: isJson,
+            usePagination: pagination.usePagination,
+            emptyMessage: 'No thread tweets found.',
+          });
+
+          // Show pagination hint if there's more
+          if (result.nextCursor && !isJson) {
+            console.error(
+              `${ctx.p('info')}More thread tweets available. Use --cursor "${result.nextCursor}" to continue.`,
+            );
+          }
+        }
+
+        if (!result.success) {
+          console.error(`${ctx.p('err')}Failed to fetch thread: ${result.error}`);
+          process.exit(1);
+        }
+      },
+    );
+}

src/commands/search.ts

@@ -0,0 +1,142 @@
+import type { Command } from 'commander';
+import type { CliContext } from '../cli/shared.js';
+import { mentionsQueryFromUserOption, normalizeHandle } from '../lib/normalize-handle.js';
+import { TwitterClient } from '../lib/twitter-client.js';
+
+export function registerSearchCommands(program: Command, ctx: CliContext): void {
+  program
+    .command('search')
+    .description('Search for tweets')
+    .argument('<query>', 'Search query (e.g., "@clawdbot" or "from:clawdbot")')
+    .option('-n, --count <number>', 'Number of tweets to fetch', '10')
+    .option('--all', 'Fetch all search results (paged)')
+    .option('--max-pages <number>', 'Stop after N pages when using --all')
+    .option('--cursor <string>', 'Resume pagination from a cursor')
+    .option('--json', 'Output as JSON')
+    .option('--json-full', 'Output as JSON with full raw API response in _raw field')
+    .action(
+      async (
+        query: string,
+        cmdOpts: {
+          count?: string;
+          all?: boolean;
+          maxPages?: string;
+          cursor?: string;
+          json?: boolean;
+          jsonFull?: boolean;
+        },
+      ) => {
+        const opts = program.opts();
+        const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+        const quoteDepth = ctx.resolveQuoteDepthFromOptions(opts);
+        const count = Number.parseInt(cmdOpts.count || '10', 10);
+        const maxPages = cmdOpts.maxPages ? Number.parseInt(cmdOpts.maxPages, 10) : undefined;
+
+        const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+        for (const warning of warnings) {
+          console.error(`${ctx.p('warn')}${warning}`);
+        }
+
+        if (!cookies.authToken || !cookies.ct0) {
+          console.error(`${ctx.p('err')}Missing required credentials`);
+          process.exit(1);
+        }
+
+        const usePagination = cmdOpts.all || cmdOpts.cursor;
+        if (maxPages !== undefined && !usePagination) {
+          console.error(`${ctx.p('err')}--max-pages requires --all or --cursor.`);
+          process.exit(1);
+        }
+        if (!usePagination && (!Number.isFinite(count) || count <= 0)) {
+          console.error(`${ctx.p('err')}Invalid --count. Expected a positive integer.`);
+          process.exit(1);
+        }
+        if (maxPages !== undefined && (!Number.isFinite(maxPages) || maxPages <= 0)) {
+          console.error(`${ctx.p('err')}Invalid --max-pages. Expected a positive integer.`);
+          process.exit(1);
+        }
+
+        const client = new TwitterClient({ cookies, timeoutMs, quoteDepth });
+        const includeRaw = cmdOpts.jsonFull ?? false;
+        const searchOptions = { includeRaw };
+        const paginationOptions = { includeRaw, maxPages, cursor: cmdOpts.cursor };
+        const result = usePagination
+          ? await client.getAllSearchResults(query, paginationOptions)
+          : await client.search(query, count, searchOptions);
+
+        if (result.success) {
+          const isJson = Boolean(cmdOpts.json || cmdOpts.jsonFull);
+          ctx.printTweetsResult(result, {
+            json: isJson,
+            usePagination: Boolean(usePagination),
+            emptyMessage: 'No tweets found.',
+          });
+        } else {
+          console.error(`${ctx.p('err')}Search failed: ${result.error}`);
+          process.exit(1);
+        }
+      },
+    );
+
+  program
+    .command('mentions')
+    .description('Find tweets mentioning a user (defaults to current user)')
+    .option('-u, --user <handle>', 'User handle (e.g. @steipete)')
+    .option('-n, --count <number>', 'Number of tweets to fetch', '10')
+    .option('--json', 'Output as JSON')
+    .option('--json-full', 'Output as JSON with full raw API response in _raw field')
+    .action(async (cmdOpts: { user?: string; count?: string; json?: boolean; jsonFull?: boolean }) => {
+      const opts = program.opts();
+      const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+      const quoteDepth = ctx.resolveQuoteDepthFromOptions(opts);
+      const count = Number.parseInt(cmdOpts.count || '10', 10);
+
+      const fromUserOpt = mentionsQueryFromUserOption(cmdOpts.user);
+      if (fromUserOpt.error) {
+        console.error(`${ctx.p('err')}${fromUserOpt.error}`);
+        process.exit(2);
+      }
+
+      let query: string | null = fromUserOpt.query;
+
+      const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+      for (const warning of warnings) {
+        console.error(`${ctx.p('warn')}${warning}`);
+      }
+
+      if (!cookies.authToken || !cookies.ct0) {
+        console.error(`${ctx.p('err')}Missing required credentials`);
+        process.exit(1);
+      }
+
+      const client = new TwitterClient({ cookies, timeoutMs, quoteDepth });
+
+      if (!query) {
+        const who = await client.getCurrentUser();
+        const handle = normalizeHandle(who.user?.username);
+        if (handle) {
+          query = `@${handle}`;
+        } else {
+          console.error(
+            `${ctx.p('err')}Could not determine current user (${who.error ?? 'Unknown error'}). Use --user <handle>.`,
+          );
+          process.exit(1);
+        }
+      }
+
+      const includeRaw = cmdOpts.jsonFull ?? false;
+      const result = await client.search(query, count, { includeRaw });
+
+      if (result.success) {
+        ctx.printTweets(result.tweets, {
+          json: cmdOpts.json || cmdOpts.jsonFull,
+          emptyMessage: 'No mentions found.',
+        });
+      } else {
+        console.error(`${ctx.p('err')}Failed to fetch mentions: ${result.error}`);
+        process.exit(1);
+      }
+    });
+}

src/commands/unbookmark.ts

@@ -0,0 +1,43 @@
+import type { Command } from 'commander';
+import type { CliContext } from '../cli/shared.js';
+import { TwitterClient } from '../lib/twitter-client.js';
+
+export function registerUnbookmarkCommand(program: Command, ctx: CliContext): void {
+  program
+    .command('unbookmark')
+    .description('Remove bookmarked tweets')
+    .argument('<tweet-id-or-url...>', 'Tweet IDs or URLs to remove from bookmarks')
+    .action(async (tweetIdOrUrls: string[]) => {
+      const opts = program.opts();
+      const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+
+      const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+      for (const warning of warnings) {
+        console.error(`${ctx.p('warn')}${warning}`);
+      }
+
+      if (!cookies.authToken || !cookies.ct0) {
+        console.error(`${ctx.p('err')}Missing required credentials`);
+        process.exit(1);
+      }
+
+      const client = new TwitterClient({ cookies, timeoutMs });
+      let failures = 0;
+
+      for (const input of tweetIdOrUrls) {
+        const tweetId = ctx.extractTweetId(input);
+        const result = await client.unbookmark(tweetId);
+        if (result.success) {
+          console.log(`${ctx.p('ok')}Removed bookmark for ${tweetId}`);
+        } else {
+          failures += 1;
+          console.error(`${ctx.p('err')}Failed to remove bookmark for ${tweetId}: ${result.error}`);
+        }
+      }
+
+      if (failures > 0) {
+        process.exit(1);
+      }
+    });
+}

src/commands/user-tweets.ts

@@ -0,0 +1,143 @@
+import type { Command } from 'commander';
+import { parseNonNegativeIntFlag, parsePositiveIntFlag } from '../cli/pagination.js';
+import type { CliContext } from '../cli/shared.js';
+import { normalizeHandle } from '../lib/normalize-handle.js';
+import { TwitterClient } from '../lib/twitter-client.js';
+
+export function registerUserTweetsCommand(program: Command, ctx: CliContext): void {
+  const formatExample = (cmd: string, desc: string): string =>
+    `  ${ctx.colors.command(cmd)}\n    ${ctx.colors.muted(desc)}`;
+
+  program
+    .command('user-tweets')
+    .description("Get tweets from a user's profile timeline")
+    .argument('<handle>', 'Username to fetch tweets from (e.g., @steipete or steipete)')
+    .option('-n, --count <number>', 'Number of tweets to fetch', '20')
+    .option('--max-pages <number>', 'Stop after N pages (max: 10)')
+    .option('--delay <ms>', 'Delay in ms between page fetches', '1000')
+    .option('--cursor <string>', 'Resume pagination from a cursor')
+    .option('--json', 'Output as JSON')
+    .option('--json-full', 'Output as JSON with full raw API response in _raw field')
+    .addHelpText(
+      'after',
+      () =>
+        `\n${ctx.colors.section('Command Examples')}\n${[
+          formatExample('bird user-tweets @steipete', 'Get recent tweets from a user'),
+          formatExample('bird user-tweets steipete -n 10', 'Get 10 tweets (@ is optional)'),
+          formatExample('bird user-tweets @steipete -n 50', 'Fetch 50 tweets (paged)'),
+          formatExample('bird user-tweets @steipete --max-pages 3 -n 200', 'Safety cap (max 3 pages)'),
+          formatExample('bird user-tweets @steipete --json', 'Output as JSON'),
+          formatExample('bird user-tweets @steipete --cursor "DAABCg..."', 'Resume from cursor'),
+        ].join('\n')}`,
+    )
+    .action(
+      async (
+        handle: string,
+        cmdOpts: {
+          count?: string;
+          maxPages?: string;
+          delay?: string;
+          cursor?: string;
+          json?: boolean;
+          jsonFull?: boolean;
+        },
+      ) => {
+        const opts = program.opts();
+        const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+        const quoteDepth = ctx.resolveQuoteDepthFromOptions(opts);
+        const count = Number.parseInt(cmdOpts.count || '20', 10);
+
+        const maxPagesParsed = parsePositiveIntFlag(cmdOpts.maxPages, '--max-pages');
+        if (!maxPagesParsed.ok) {
+          console.error(`${ctx.p('err')}${maxPagesParsed.error}`);
+          process.exit(2);
+        }
+        const maxPages = maxPagesParsed.value;
+
+        const delayParsed = parseNonNegativeIntFlag(cmdOpts.delay, '--delay', 1000);
+        if (!delayParsed.ok) {
+          console.error(`${ctx.p('err')}${delayParsed.error}`);
+          process.exit(2);
+        }
+        const pageDelayMs = delayParsed.value;
+
+        // Validate inputs
+        if (!Number.isFinite(count) || count <= 0) {
+          console.error(`${ctx.p('err')}Invalid --count. Expected a positive integer.`);
+          process.exit(2);
+        }
+        const pageSize = 20;
+        const hardMaxPages = 10;
+        const hardMaxTweets = pageSize * hardMaxPages;
+        if (count > hardMaxTweets) {
+          console.error(
+            `${ctx.p('err')}Invalid --count. Max ${hardMaxTweets} tweets per run (safety cap: ${hardMaxPages} pages). Use --cursor to continue.`,
+          );
+          process.exit(2);
+        }
+        if (maxPages !== undefined && maxPages > hardMaxPages) {
+          console.error(`${ctx.p('err')}Invalid --max-pages. Expected a positive integer (max: ${hardMaxPages}).`);
+          process.exit(2);
+        }
+
+        // Normalize handle (strip @ if present)
+        const username = normalizeHandle(handle);
+        if (!username) {
+          console.error(`${ctx.p('err')}Invalid handle: ${handle}`);
+          process.exit(2);
+        }
+
+        const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+        for (const warning of warnings) {
+          console.error(`${ctx.p('warn')}${warning}`);
+        }
+
+        if (!cookies.authToken || !cookies.ct0) {
+          console.error(`${ctx.p('err')}Missing required credentials`);
+          process.exit(1);
+        }
+
+        const client = new TwitterClient({ cookies, timeoutMs, quoteDepth });
+
+        // Look up user ID from username
+        console.error(`${ctx.p('info')}Looking up @${username}...`);
+        const userLookup = await client.getUserIdByUsername(username);
+        if (!userLookup.success || !userLookup.userId) {
+          console.error(`${ctx.p('err')}${userLookup.error || `Could not find user @${username}`}`);
+          process.exit(1);
+        }
+
+        const displayName = userLookup.name
+          ? `${userLookup.name} (@${userLookup.username})`
+          : `@${userLookup.username}`;
+        console.error(`${ctx.p('info')}Fetching tweets from ${displayName}...`);
+
+        const includeRaw = cmdOpts.jsonFull ?? false;
+        const wantsPaginationOutput = Boolean(cmdOpts.cursor) || maxPages !== undefined || count > pageSize;
+        const result = await client.getUserTweetsPaged(userLookup.userId, count, {
+          includeRaw,
+          maxPages,
+          cursor: cmdOpts.cursor,
+          pageDelayMs,
+        });
+
+        if (result.success) {
+          const isJson = Boolean(cmdOpts.json || cmdOpts.jsonFull);
+          ctx.printTweetsResult(result, {
+            json: isJson,
+            usePagination: wantsPaginationOutput,
+            emptyMessage: `No tweets found for @${username}.`,
+          });
+
+          // Show pagination hint if there's more
+          if (result.nextCursor && !cmdOpts.json && !cmdOpts.jsonFull) {
+            console.error(`${ctx.p('info')}More tweets available. Use --cursor "${result.nextCursor}" to continue.`);
+          }
+        } else {
+          console.error(`${ctx.p('err')}Failed to fetch tweets: ${result.error}`);
+          process.exit(1);
+        }
+      },
+    );
+}

src/commands/users.ts

@@ -0,0 +1,436 @@
+import type { Command } from 'commander';
+import type { CliContext } from '../cli/shared.js';
+import { TwitterClient } from '../lib/twitter-client.js';
+import type { TwitterUser } from '../lib/twitter-client-types.js';
+
+export function registerUserCommands(program: Command, ctx: CliContext): void {
+  program
+    .command('following')
+    .description('Get users that you (or another user) follow')
+    .option('--user <userId>', 'User ID to get following for (defaults to current user)')
+    .option('-n, --count <number>', 'Number of users to fetch per page', '20')
+    .option('--cursor <cursor>', 'Cursor for pagination (from previous response)')
+    .option('--all', 'Fetch all users (paginate automatically)')
+    .option('--max-pages <number>', 'Stop after N pages when using --all')
+    .option('--json', 'Output as JSON')
+    .action(
+      async (cmdOpts: {
+        user?: string;
+        count?: string;
+        cursor?: string;
+        all?: boolean;
+        maxPages?: string;
+        json?: boolean;
+      }) => {
+        const opts = program.opts();
+        const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+        const count = Number.parseInt(cmdOpts.count || '20', 10);
+        const maxPages = cmdOpts.maxPages ? Number.parseInt(cmdOpts.maxPages, 10) : undefined;
+
+        const usePagination = cmdOpts.all || cmdOpts.cursor;
+        if (maxPages !== undefined && !cmdOpts.all) {
+          console.error(`${ctx.p('err')}--max-pages requires --all.`);
+          process.exit(1);
+        }
+        if (maxPages !== undefined && (!Number.isFinite(maxPages) || maxPages <= 0)) {
+          console.error(`${ctx.p('err')}Invalid --max-pages. Expected a positive integer.`);
+          process.exit(1);
+        }
+
+        const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+        for (const warning of warnings) {
+          console.error(`${ctx.p('warn')}${warning}`);
+        }
+
+        if (!cookies.authToken || !cookies.ct0) {
+          console.error(`${ctx.p('err')}Missing required credentials`);
+          process.exit(1);
+        }
+
+        const client = new TwitterClient({ cookies, timeoutMs });
+
+        let userId = cmdOpts.user;
+        if (!userId) {
+          const currentUser = await client.getCurrentUser();
+          if (!currentUser.success || !currentUser.user?.id) {
+            console.error(`${ctx.p('err')}Failed to get current user: ${currentUser.error || 'Unknown error'}`);
+            process.exit(1);
+          }
+          userId = currentUser.user.id;
+        }
+
+        if (cmdOpts.all) {
+          // Fetch all pages
+          const allUsers: TwitterUser[] = [];
+          const seen = new Set<string>();
+          let cursor: string | undefined = cmdOpts.cursor;
+          let pageNum = 0;
+          let nextCursor: string | undefined;
+
+          while (true) {
+            pageNum++;
+            if (!cmdOpts.json) {
+              console.error(`${ctx.p('info')}Fetching page ${pageNum}...`);
+            }
+
+            const result = await client.getFollowing(userId, count, cursor);
+
+            if (!result.success || !result.users) {
+              console.error(`${ctx.p('err')}Failed to fetch following: ${result.error}`);
+              process.exit(1);
+            }
+
+            let added = 0;
+            for (const user of result.users) {
+              if (!seen.has(user.id)) {
+                seen.add(user.id);
+                allUsers.push(user);
+                added += 1;
+              }
+            }
+
+            const pageCursor = result.nextCursor;
+            if (!pageCursor || result.users.length === 0 || added === 0 || pageCursor === cursor) {
+              nextCursor = undefined;
+              break;
+            }
+
+            if (maxPages && pageNum >= maxPages) {
+              nextCursor = pageCursor;
+              break;
+            }
+
+            cursor = pageCursor;
+
+            // Rate limit: wait between pages to avoid overwhelming the API
+            await new Promise((resolve) => setTimeout(resolve, 1000));
+          }
+
+          if (cmdOpts.json) {
+            console.log(JSON.stringify({ users: allUsers, nextCursor: nextCursor ?? null }, null, 2));
+          } else {
+            console.error(`${ctx.p('info')}Total: ${allUsers.length} users`);
+            if (nextCursor) {
+              console.error(`${ctx.p('info')}Stopped at --max-pages. Use --cursor to continue.`);
+              console.error(`${ctx.p('info')}Next cursor: ${nextCursor}`);
+            }
+            for (const user of allUsers) {
+              console.log(`@${user.username} (${user.name})`);
+              if (user.description) {
+                console.log(`  ${user.description.slice(0, 100)}${user.description.length > 100 ? '...' : ''}`);
+              }
+              if (user.followersCount !== undefined) {
+                console.log(`  ${ctx.p('info')}${user.followersCount.toLocaleString()} followers`);
+              }
+              console.log('──────────────────────────────────────────────────');
+            }
+          }
+        } else {
+          // Single page fetch
+          const result = await client.getFollowing(userId, count, cmdOpts.cursor);
+
+          if (result.success && result.users) {
+            if (cmdOpts.json) {
+              if (usePagination) {
+                console.log(JSON.stringify({ users: result.users, nextCursor: result.nextCursor ?? null }, null, 2));
+              } else {
+                console.log(JSON.stringify(result.users, null, 2));
+              }
+            } else {
+              if (result.users.length === 0) {
+                console.log('No users found.');
+              } else {
+                for (const user of result.users) {
+                  console.log(`@${user.username} (${user.name})`);
+                  if (user.description) {
+                    console.log(`  ${user.description.slice(0, 100)}${user.description.length > 100 ? '...' : ''}`);
+                  }
+                  if (user.followersCount !== undefined) {
+                    console.log(`  ${ctx.p('info')}${user.followersCount.toLocaleString()} followers`);
+                  }
+                  console.log('──────────────────────────────────────────────────');
+                }
+                if (result.nextCursor) {
+                  console.error(`${ctx.p('info')}Next cursor: ${result.nextCursor}`);
+                }
+              }
+            }
+          } else {
+            console.error(`${ctx.p('err')}Failed to fetch following: ${result.error}`);
+            process.exit(1);
+          }
+        }
+      },
+    );
+
+  program
+    .command('followers')
+    .description('Get users that follow you (or another user)')
+    .option('--user <userId>', 'User ID to get followers for (defaults to current user)')
+    .option('-n, --count <number>', 'Number of users to fetch per page', '20')
+    .option('--cursor <cursor>', 'Cursor for pagination (from previous response)')
+    .option('--all', 'Fetch all users (paginate automatically)')
+    .option('--max-pages <number>', 'Stop after N pages when using --all')
+    .option('--json', 'Output as JSON')
+    .action(
+      async (cmdOpts: {
+        user?: string;
+        count?: string;
+        cursor?: string;
+        all?: boolean;
+        maxPages?: string;
+        json?: boolean;
+      }) => {
+        const opts = program.opts();
+        const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+        const count = Number.parseInt(cmdOpts.count || '20', 10);
+        const maxPages = cmdOpts.maxPages ? Number.parseInt(cmdOpts.maxPages, 10) : undefined;
+
+        const usePagination = cmdOpts.all || cmdOpts.cursor;
+        if (maxPages !== undefined && !cmdOpts.all) {
+          console.error(`${ctx.p('err')}--max-pages requires --all.`);
+          process.exit(1);
+        }
+        if (maxPages !== undefined && (!Number.isFinite(maxPages) || maxPages <= 0)) {
+          console.error(`${ctx.p('err')}Invalid --max-pages. Expected a positive integer.`);
+          process.exit(1);
+        }
+
+        const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+        for (const warning of warnings) {
+          console.error(`${ctx.p('warn')}${warning}`);
+        }
+
+        if (!cookies.authToken || !cookies.ct0) {
+          console.error(`${ctx.p('err')}Missing required credentials`);
+          process.exit(1);
+        }
+
+        const client = new TwitterClient({ cookies, timeoutMs });
+
+        let userId = cmdOpts.user;
+        if (!userId) {
+          const currentUser = await client.getCurrentUser();
+          if (!currentUser.success || !currentUser.user?.id) {
+            console.error(`${ctx.p('err')}Failed to get current user: ${currentUser.error || 'Unknown error'}`);
+            process.exit(1);
+          }
+          userId = currentUser.user.id;
+        }
+
+        if (cmdOpts.all) {
+          // Fetch all pages
+          const allUsers: TwitterUser[] = [];
+          const seen = new Set<string>();
+          let cursor: string | undefined = cmdOpts.cursor;
+          let pageNum = 0;
+          let nextCursor: string | undefined;
+
+          while (true) {
+            pageNum++;
+            if (!cmdOpts.json) {
+              console.error(`${ctx.p('info')}Fetching page ${pageNum}...`);
+            }
+
+            const result = await client.getFollowers(userId, count, cursor);
+
+            if (!result.success || !result.users) {
+              console.error(`${ctx.p('err')}Failed to fetch followers: ${result.error}`);
+              process.exit(1);
+            }
+
+            let added = 0;
+            for (const user of result.users) {
+              if (!seen.has(user.id)) {
+                seen.add(user.id);
+                allUsers.push(user);
+                added += 1;
+              }
+            }
+
+            const pageCursor = result.nextCursor;
+            if (!pageCursor || result.users.length === 0 || added === 0 || pageCursor === cursor) {
+              nextCursor = undefined;
+              break;
+            }
+
+            if (maxPages && pageNum >= maxPages) {
+              nextCursor = pageCursor;
+              break;
+            }
+
+            cursor = pageCursor;
+
+            // Rate limit: wait between pages to avoid overwhelming the API
+            await new Promise((resolve) => setTimeout(resolve, 1000));
+          }
+
+          if (cmdOpts.json) {
+            console.log(JSON.stringify({ users: allUsers, nextCursor: nextCursor ?? null }, null, 2));
+          } else {
+            console.error(`${ctx.p('info')}Total: ${allUsers.length} users`);
+            if (nextCursor) {
+              console.error(`${ctx.p('info')}Stopped at --max-pages. Use --cursor to continue.`);
+              console.error(`${ctx.p('info')}Next cursor: ${nextCursor}`);
+            }
+            for (const user of allUsers) {
+              console.log(`@${user.username} (${user.name})`);
+              if (user.description) {
+                console.log(`  ${user.description.slice(0, 100)}${user.description.length > 100 ? '...' : ''}`);
+              }
+              if (user.followersCount !== undefined) {
+                console.log(`  ${ctx.p('info')}${user.followersCount.toLocaleString()} followers`);
+              }
+              console.log('──────────────────────────────────────────────────');
+            }
+          }
+        } else {
+          // Single page fetch
+          const result = await client.getFollowers(userId, count, cmdOpts.cursor);
+
+          if (result.success && result.users) {
+            if (cmdOpts.json) {
+              if (usePagination) {
+                console.log(JSON.stringify({ users: result.users, nextCursor: result.nextCursor ?? null }, null, 2));
+              } else {
+                console.log(JSON.stringify(result.users, null, 2));
+              }
+            } else {
+              if (result.users.length === 0) {
+                console.log('No users found.');
+              } else {
+                for (const user of result.users) {
+                  console.log(`@${user.username} (${user.name})`);
+                  if (user.description) {
+                    console.log(`  ${user.description.slice(0, 100)}${user.description.length > 100 ? '...' : ''}`);
+                  }
+                  if (user.followersCount !== undefined) {
+                    console.log(`  ${ctx.p('info')}${user.followersCount.toLocaleString()} followers`);
+                  }
+                  console.log('──────────────────────────────────────────────────');
+                }
+                if (result.nextCursor) {
+                  console.error(`${ctx.p('info')}Next cursor: ${result.nextCursor}`);
+                }
+              }
+            }
+          } else {
+            console.error(`${ctx.p('err')}Failed to fetch followers: ${result.error}`);
+            process.exit(1);
+          }
+        }
+      },
+    );
+
+  program
+    .command('likes')
+    .description('Get your liked tweets')
+    .option('-n, --count <number>', 'Number of likes to fetch', '20')
+    .option('--all', 'Fetch all likes (paged)')
+    .option('--max-pages <number>', 'Stop after N pages when using --all')
+    .option('--cursor <string>', 'Resume pagination from a cursor')
+    .option('--json', 'Output as JSON')
+    .option('--json-full', 'Output as JSON with full raw API response in _raw field')
+    .action(
+      async (cmdOpts: {
+        count?: string;
+        json?: boolean;
+        jsonFull?: boolean;
+        all?: boolean;
+        maxPages?: string;
+        cursor?: string;
+      }) => {
+        const opts = program.opts();
+        const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+        const quoteDepth = ctx.resolveQuoteDepthFromOptions(opts);
+        const count = Number.parseInt(cmdOpts.count || '20', 10);
+        const maxPages = cmdOpts.maxPages ? Number.parseInt(cmdOpts.maxPages, 10) : undefined;
+
+        const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+        for (const warning of warnings) {
+          console.error(`${ctx.p('warn')}${warning}`);
+        }
+
+        if (!cookies.authToken || !cookies.ct0) {
+          console.error(`${ctx.p('err')}Missing required credentials`);
+          process.exit(1);
+        }
+
+        const usePagination = cmdOpts.all || cmdOpts.cursor;
+        if (maxPages !== undefined && !usePagination) {
+          console.error(`${ctx.p('err')}--max-pages requires --all or --cursor.`);
+          process.exit(1);
+        }
+        if (!usePagination && (!Number.isFinite(count) || count <= 0)) {
+          console.error(`${ctx.p('err')}Invalid --count. Expected a positive integer.`);
+          process.exit(1);
+        }
+        if (maxPages !== undefined && (!Number.isFinite(maxPages) || maxPages <= 0)) {
+          console.error(`${ctx.p('err')}Invalid --max-pages. Expected a positive integer.`);
+          process.exit(1);
+        }
+
+        const client = new TwitterClient({ cookies, timeoutMs, quoteDepth });
+        const includeRaw = cmdOpts.jsonFull ?? false;
+        const timelineOptions = { includeRaw };
+        const paginationOptions = { includeRaw, maxPages, cursor: cmdOpts.cursor };
+        const result = usePagination
+          ? await client.getAllLikes(paginationOptions)
+          : await client.getLikes(count, timelineOptions);
+
+        if (result.success) {
+          const isJson = Boolean(cmdOpts.json || cmdOpts.jsonFull);
+          ctx.printTweetsResult(result, {
+            json: isJson,
+            usePagination: Boolean(usePagination),
+            emptyMessage: 'No liked tweets found.',
+          });
+        } else {
+          console.error(`${ctx.p('err')}Failed to fetch likes: ${result.error}`);
+          process.exit(1);
+        }
+      },
+    );
+
+  program
+    .command('whoami')
+    .description('Show which Twitter account the current credentials belong to')
+    .action(async () => {
+      const opts = program.opts();
+      const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+      const quoteDepth = ctx.resolveQuoteDepthFromOptions(opts);
+
+      const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+      for (const warning of warnings) {
+        console.error(`${ctx.p('warn')}${warning}`);
+      }
+
+      if (!cookies.authToken || !cookies.ct0) {
+        console.error(`${ctx.p('err')}Missing required credentials`);
+        process.exit(1);
+      }
+
+      if (cookies.source) {
+        console.error(`${ctx.l('source')}${cookies.source}`);
+      }
+
+      const client = new TwitterClient({ cookies, timeoutMs, quoteDepth });
+      const result = await client.getCurrentUser();
+
+      const credentialSource = cookies.source ?? 'env/auto-detected cookies';
+
+      if (result.success && result.user) {
+        console.log(`${ctx.l('user')}@${result.user.username} (${result.user.name})`);
+        console.log(`${ctx.l('userId')}${result.user.id}`);
+        console.log(`${ctx.l('engine')}graphql`);
+        console.log(`${ctx.l('credentials')}${credentialSource}`);
+      } else {
+        console.error(`${ctx.p('err')}Failed to determine current user: ${result.error ?? 'Unknown error'}`);
+        process.exit(1);
+      }
+    });
+}

src/index.ts

@@ -1,769 +1 @@
-#!/usr/bin/env node
-/**
- * bird - CLI tool for posting tweets and replies
- *
- * Usage:
- *   bird tweet "Hello world!"
- *   bird reply <tweet-id> "This is a reply"
- *   bird reply <tweet-url> "This is a reply"
- *   bird read <tweet-id-or-url>
- */
-
-import { existsSync, readFileSync } from 'node:fs';
-import { homedir } from 'node:os';
-import { join } from 'node:path';
-import { Command } from 'commander';
-import JSON5 from 'json5';
-import kleur from 'kleur';
-import { resolveCliInvocation } from './lib/cli-args.js';
-import { type CookieSource, resolveCredentials } from './lib/cookies.js';
-import { extractTweetId } from './lib/extract-tweet-id.js';
-import { mentionsQueryFromUserOption, normalizeHandle } from './lib/normalize-handle.js';
-import {
-  formatStatsLine,
-  formatTweetUrlLine,
-  labelPrefix,
-  type OutputConfig,
-  resolveOutputConfigFromArgv,
-  resolveOutputConfigFromCommander,
-  statusPrefix,
-} from './lib/output.js';
-import { runtimeQueryIds } from './lib/runtime-query-ids.js';
-import { type TweetData, TwitterClient } from './lib/twitter-client.js';
-import { getCliVersion } from './lib/version.js';
-
-const program = new Command();
-
-const rawArgs = process.argv.slice(2);
-const normalizedArgs = rawArgs[0] === '--' ? rawArgs.slice(1) : rawArgs;
-const isTty = process.stdout.isTTY;
-let output: OutputConfig = resolveOutputConfigFromArgv(normalizedArgs, process.env, isTty);
-kleur.enabled = output.color;
-
-const wrap = (styler: (text: string) => string) => (text: string) => (isTty ? styler(text) : text);
-const collect = (value: string, previous: string[] = []) => {
-  previous.push(value);
-  return previous;
-};
-
-const COOKIE_SOURCES: CookieSource[] = ['safari', 'chrome', 'firefox'];
-
-function parseCookieSource(value: string): CookieSource {
-  const normalized = value.trim().toLowerCase();
-  if (normalized === 'safari' || normalized === 'chrome' || normalized === 'firefox') return normalized;
-  throw new Error(`Invalid --cookie-source "${value}". Allowed: safari, chrome, firefox.`);
-}
-
-function resolveCookieSourceOrder(input: unknown): CookieSource[] | undefined {
-  if (typeof input === 'string') return [parseCookieSource(input)];
-  if (Array.isArray(input)) {
-    const result: CookieSource[] = [];
-    for (const entry of input) {
-      if (typeof entry !== 'string') continue;
-      result.push(parseCookieSource(entry));
-    }
-    return result.length > 0 ? result : undefined;
-  }
-  return undefined;
-}
-
-const collectCookieSource = (value: string, previous: CookieSource[] = []) => {
-  previous.push(parseCookieSource(value));
-  return previous;
-};
-
-const p = (kind: Parameters<typeof statusPrefix>[0]) => statusPrefix(kind, output);
-const l = (kind: Parameters<typeof labelPrefix>[0]) => labelPrefix(kind, output);
-
-function applyOutputFromCommand(command: Command) {
-  const opts = command.optsWithGlobals() as { plain?: boolean; emoji?: boolean; color?: boolean };
-  output = resolveOutputConfigFromCommander(opts, process.env, isTty);
-  kleur.enabled = output.color;
-}
-
-const colors = {
-  banner: wrap((t) => kleur.bold().blue(t)),
-  subtitle: wrap((t) => kleur.dim(t)),
-  section: wrap((t) => kleur.bold().white(t)),
-  bullet: wrap((t) => kleur.blue(t)),
-  command: wrap((t) => kleur.bold().cyan(t)),
-  option: wrap((t) => kleur.cyan(t)),
-  argument: wrap((t) => kleur.magenta(t)),
-  description: wrap((t) => kleur.white(t)),
-  muted: wrap((t) => kleur.gray(t)),
-  accent: wrap((t) => kleur.green(t)),
-};
-
-type BirdConfig = {
-  chromeProfile?: string;
-  firefoxProfile?: string;
-  cookieSource?: CookieSource | CookieSource[];
-  timeoutMs?: number;
-};
-
-function readConfigFile(path: string): Partial<BirdConfig> {
-  if (!existsSync(path)) return {};
-  try {
-    const raw = readFileSync(path, 'utf8');
-    const parsed = JSON5.parse(raw) as Partial<BirdConfig>;
-    return parsed ?? {};
-  } catch (error) {
-    console.error(
-      colors.muted(
-        `${p('warn')}Failed to parse config at ${path}: ${error instanceof Error ? error.message : String(error)}`,
-      ),
-    );
-    return {};
-  }
-}
-
-function loadConfig(): BirdConfig {
-  const globalPath = join(homedir(), '.config', 'bird', 'config.json5');
-  const localPath = join(process.cwd(), '.birdrc.json5');
-
-  return {
-    ...readConfigFile(globalPath),
-    ...readConfigFile(localPath),
-  };
-}
-
-const config = loadConfig();
-
-const KNOWN_COMMANDS = new Set([
-  'tweet',
-  'reply',
-  'query-ids',
-  'read',
-  'replies',
-  'thread',
-  'search',
-  'mentions',
-  'help',
-  'whoami',
-  'check',
-]);
-
-program.addHelpText(
-  'beforeAll',
-  () => `${colors.banner('bird CLI')} ${colors.subtitle('— fast X CLI for tweeting, replying, and reading')}`,
-);
-
-program.name('bird').description('Post tweets and replies via Twitter/X GraphQL API').version(getCliVersion());
-
-const formatExample = (command: string, description: string) =>
-  `${colors.command(`  ${command}`)}\n${colors.muted(`    ${description}`)}`;
-
-program.addHelpText(
-  'afterAll',
-  () =>
-    `\n${colors.section('Examples')}\n${[
-      formatExample('bird whoami', 'Show the logged-in account via GraphQL cookies'),
-      formatExample('bird --firefox-profile default-release whoami', 'Use Firefox profile cookies'),
-      formatExample('bird tweet "hello from bird"', 'Send a tweet'),
-      formatExample('bird replies https://x.com/user/status/1234567890123456789', 'Check replies to a tweet'),
-    ].join('\n\n')}`,
-);
-
-// Global options for authentication
-program
-  .option('--auth-token <token>', 'Twitter auth_token cookie')
-  .option('--ct0 <token>', 'Twitter ct0 cookie')
-  .option('--chrome-profile <name>', 'Chrome profile name for cookie extraction', config.chromeProfile)
-  .option('--firefox-profile <name>', 'Firefox profile name for cookie extraction', config.firefoxProfile)
-  .option(
-    '--cookie-source <source>',
-    'Cookie source for browser cookie extraction (repeatable)',
-    collectCookieSource,
-    [],
-  )
-  .option('--media <path>', 'Attach media file (repeatable, up to 4 images or 1 video)', collect, [])
-  .option('--alt <text>', 'Alt text for the corresponding --media (repeatable)', collect, [])
-  .option('--timeout <ms>', 'Request timeout in milliseconds')
-  .option('--plain', 'Plain output (stable, no emoji, no color)')
-  .option('--no-emoji', 'Disable emoji output')
-  .option('--no-color', 'Disable ANSI colors (or set NO_COLOR)');
-
-type CredentialsOptions = {
-  authToken?: string;
-  ct0?: string;
-  chromeProfile?: string;
-  firefoxProfile?: string;
-  cookieSource?: CookieSource[];
-};
-
-function resolveCredentialsFromOptions(opts: CredentialsOptions) {
-  const cookieSource = opts.cookieSource?.length
-    ? opts.cookieSource
-    : (resolveCookieSourceOrder(config.cookieSource) ?? COOKIE_SOURCES);
-  return resolveCredentials({
-    authToken: opts.authToken,
-    ct0: opts.ct0,
-    cookieSource,
-    chromeProfile: opts.chromeProfile || config.chromeProfile,
-    firefoxProfile: opts.firefoxProfile || config.firefoxProfile,
-  });
-}
-
-program.hook('preAction', (_thisCommand, actionCommand) => {
-  applyOutputFromCommand(actionCommand);
-});
-
-type MediaSpec = { path: string; alt?: string; mime: string; buffer: Buffer };
-
-function resolveTimeoutMs(...values: Array<string | number | undefined | null>): number | undefined {
-  for (const value of values) {
-    if (value === undefined || value === null || value === '') continue;
-    const parsed = typeof value === 'number' ? value : Number(value);
-    if (Number.isFinite(parsed) && parsed > 0) return parsed;
-  }
-  return undefined;
-}
-
-function resolveTimeoutFromOptions(options: { timeout?: string | number }): number | undefined {
-  return resolveTimeoutMs(options.timeout, config.timeoutMs, process.env.BIRD_TIMEOUT_MS);
-}
-
-function detectMime(path: string): string | null {
-  const ext = path.toLowerCase();
-  if (ext.endsWith('.jpg') || ext.endsWith('.jpeg')) return 'image/jpeg';
-  if (ext.endsWith('.png')) return 'image/png';
-  if (ext.endsWith('.webp')) return 'image/webp';
-  if (ext.endsWith('.gif')) return 'image/gif';
-  if (ext.endsWith('.mp4') || ext.endsWith('.m4v')) return 'video/mp4';
-  if (ext.endsWith('.mov')) return 'video/quicktime';
-  return null;
-}
-
-function loadMedia(opts: { media: string[]; alts: string[] }): MediaSpec[] {
-  if (opts.media.length === 0) return [];
-  const specs: MediaSpec[] = [];
-  for (const [index, path] of opts.media.entries()) {
-    const mime = detectMime(path);
-    if (!mime) {
-      throw new Error(`Unsupported media type for ${path}. Supported: jpg, jpeg, png, webp, gif, mp4, mov`);
-    }
-    const buffer = readFileSync(path);
-    specs.push({ path, mime, buffer, alt: opts.alts[index] });
-  }
-
-  const videoCount = specs.filter((m) => m.mime.startsWith('video/')).length;
-  if (videoCount > 1) throw new Error('Only one video can be attached');
-  if (videoCount === 1 && specs.length > 1) throw new Error('Video cannot be combined with other media');
-  if (specs.length > 4) throw new Error('Maximum 4 media attachments');
-  return specs;
-}
-
-function printTweets(
-  tweets: TweetData[],
-  opts: { json?: boolean; emptyMessage?: string; showSeparator?: boolean } = {},
-) {
-  if (opts.json) {
-    console.log(JSON.stringify(tweets, null, 2));
-    return;
-  }
-  if (tweets.length === 0) {
-    console.log(opts.emptyMessage ?? 'No tweets found.');
-    return;
-  }
-  for (const tweet of tweets) {
-    console.log(`\n@${tweet.author.username} (${tweet.author.name}):`);
-    console.log(tweet.text);
-    if (tweet.createdAt) {
-      console.log(`${l('date')}${tweet.createdAt}`);
-    }
-    console.log(`${l('url')}https://x.com/${tweet.author.username}/status/${tweet.id}`);
-    if (opts.showSeparator ?? true) {
-      console.log('─'.repeat(50));
-    }
-  }
-}
-
-program
-  .command('help [command]')
-  .description('Show help for a command')
-  .action((commandName?: string) => {
-    if (!commandName) {
-      program.outputHelp();
-      return;
-    }
-
-    const cmd = program.commands.find((c) => c.name() === commandName);
-    if (!cmd) {
-      console.error(`${p('err')}Unknown command: ${commandName}`);
-      process.exitCode = 2;
-      return;
-    }
-
-    cmd.outputHelp();
-  });
-
-program
-  .command('query-ids')
-  .description('Show or refresh cached Twitter GraphQL query IDs')
-  .option('--json', 'Output as JSON')
-  .option('--fresh', 'Force refresh (downloads X client bundles)', false)
-  .action(async (cmdOpts: { json?: boolean; fresh?: boolean }) => {
-    const operations = [
-      'CreateTweet',
-      'CreateRetweet',
-      'FavoriteTweet',
-      'TweetDetail',
-      'SearchTimeline',
-      'UserArticlesTweets',
-    ];
-
-    if (cmdOpts.fresh) {
-      console.error(`${p('info')}Refreshing GraphQL query IDs…`);
-      await runtimeQueryIds.refresh(operations, { force: true });
-    }
-
-    const info = await runtimeQueryIds.getSnapshotInfo();
-    if (!info) {
-      if (cmdOpts.json) {
-        console.log(JSON.stringify({ cached: false, cachePath: runtimeQueryIds.cachePath }, null, 2));
-        return;
-      }
-      console.log(`${p('warn')}No cached query IDs yet.`);
-      console.log(`${p('info')}Run: bird query-ids --fresh`);
-      return;
-    }
-
-    if (cmdOpts.json) {
-      console.log(
-        JSON.stringify(
-          {
-            cached: true,
-            cachePath: info.cachePath,
-            fetchedAt: info.snapshot.fetchedAt,
-            isFresh: info.isFresh,
-            ageMs: info.ageMs,
-            ids: info.snapshot.ids,
-            discovery: info.snapshot.discovery,
-          },
-          null,
-          2,
-        ),
-      );
-      return;
-    }
-
-    console.log(`${p('ok')}GraphQL query IDs cached`);
-    console.log(`path: ${info.cachePath}`);
-    console.log(`fetched_at: ${info.snapshot.fetchedAt}`);
-    console.log(`fresh: ${info.isFresh ? 'yes' : 'no'}`);
-    console.log(`ops: ${Object.keys(info.snapshot.ids).length}`);
-  });
-
-// Tweet command
-program
-  .command('tweet')
-  .description('Post a new tweet')
-  .argument('<text>', 'Tweet text')
-  .action(async (text: string) => {
-    const opts = program.opts();
-    const timeoutMs = resolveTimeoutFromOptions(opts);
-    let media: MediaSpec[] = [];
-    try {
-      media = loadMedia({ media: opts.media ?? [], alts: opts.alt ?? [] });
-    } catch (error) {
-      console.error(`${p('err')}${error instanceof Error ? error.message : String(error)}`);
-      process.exit(1);
-    }
-
-    const { cookies, warnings } = await resolveCredentialsFromOptions(opts);
-
-    for (const warning of warnings) {
-      console.error(`${p('warn')}${warning}`);
-    }
-
-    if (!cookies.authToken || !cookies.ct0) {
-      console.error(`${p('err')}Missing required credentials`);
-      process.exit(1);
-    }
-
-    if (cookies.source) {
-      console.error(`${l('source')}${cookies.source}`);
-    }
-
-    const client = new TwitterClient({ cookies, timeoutMs });
-    let mediaIds: string[] | undefined;
-    if (media.length > 0) {
-      const uploaded: string[] = [];
-      for (const item of media) {
-        const res = await client.uploadMedia({ data: item.buffer, mimeType: item.mime, alt: item.alt });
-        if (!res.success || !res.mediaId) {
-          console.error(`${p('err')}Media upload failed: ${res.error ?? 'Unknown error'}`);
-          process.exit(1);
-        }
-        uploaded.push(res.mediaId);
-      }
-      mediaIds = uploaded;
-    }
-
-    const result = await client.tweet(text, mediaIds);
-
-    if (result.success) {
-      console.log(`${p('ok')}Tweet posted successfully!`);
-      console.log(formatTweetUrlLine(result.tweetId, output));
-    } else {
-      console.error(`${p('err')}Failed to post tweet: ${result.error}`);
-      process.exit(1);
-    }
-  });
-
-// Reply command
-program
-  .command('reply')
-  .description('Reply to an existing tweet')
-  .argument('<tweet-id-or-url>', 'Tweet ID or URL to reply to')
-  .argument('<text>', 'Reply text')
-  .action(async (tweetIdOrUrl: string, text: string) => {
-    const opts = program.opts();
-    const timeoutMs = resolveTimeoutFromOptions(opts);
-    let media: MediaSpec[] = [];
-    try {
-      media = loadMedia({ media: opts.media ?? [], alts: opts.alt ?? [] });
-    } catch (error) {
-      console.error(`${p('err')}${error instanceof Error ? error.message : String(error)}`);
-      process.exit(1);
-    }
-    const tweetId = extractTweetId(tweetIdOrUrl);
-
-    const { cookies, warnings } = await resolveCredentialsFromOptions(opts);
-
-    for (const warning of warnings) {
-      console.error(`${p('warn')}${warning}`);
-    }
-
-    if (!cookies.authToken || !cookies.ct0) {
-      console.error(`${p('err')}Missing required credentials`);
-      process.exit(1);
-    }
-
-    if (cookies.source) {
-      console.error(`${l('source')}${cookies.source}`);
-    }
-
-    console.error(`${p('info')}Replying to tweet: ${tweetId}`);
-
-    const client = new TwitterClient({ cookies, timeoutMs });
-    let mediaIds: string[] | undefined;
-    if (media.length > 0) {
-      const uploaded: string[] = [];
-      for (const item of media) {
-        const res = await client.uploadMedia({ data: item.buffer, mimeType: item.mime, alt: item.alt });
-        if (!res.success || !res.mediaId) {
-          console.error(`${p('err')}Media upload failed: ${res.error ?? 'Unknown error'}`);
-          process.exit(1);
-        }
-        uploaded.push(res.mediaId);
-      }
-      mediaIds = uploaded;
-    }
-
-    const result = await client.reply(text, tweetId, mediaIds);
-
-    if (result.success) {
-      console.log(`${p('ok')}Reply posted successfully!`);
-      console.log(formatTweetUrlLine(result.tweetId, output));
-    } else {
-      console.error(`${p('err')}Failed to post reply: ${result.error}`);
-      process.exit(1);
-    }
-  });
-
-// Read command - fetch tweet content
-program
-  .command('read')
-  .description('Read/fetch a tweet by ID or URL')
-  .argument('<tweet-id-or-url>', 'Tweet ID or URL to read')
-  .option('--json', 'Output as JSON')
-  .action(async (tweetIdOrUrl: string, cmdOpts: { json?: boolean }) => {
-    const opts = program.opts();
-    const timeoutMs = resolveTimeoutFromOptions(opts);
-
-    const tweetId = extractTweetId(tweetIdOrUrl);
-
-    const { cookies, warnings } = await resolveCredentialsFromOptions(opts);
-
-    for (const warning of warnings) {
-      console.error(`${p('warn')}${warning}`);
-    }
-
-    if (!cookies.authToken || !cookies.ct0) {
-      console.error(`${p('err')}Missing required credentials`);
-      process.exit(1);
-    }
-
-    const client = new TwitterClient({ cookies, timeoutMs });
-    const result = await client.getTweet(tweetId);
-
-    if (result.success && result.tweet) {
-      if (cmdOpts.json) {
-        console.log(JSON.stringify(result.tweet, null, 2));
-      } else {
-        console.log(`@${result.tweet.author.username} (${result.tweet.author.name}):`);
-        console.log(result.tweet.text);
-        if (result.tweet.createdAt) {
-          console.log(`\n${l('date')}${result.tweet.createdAt}`);
-        }
-        console.log(formatStatsLine(result.tweet, output));
-      }
-    } else {
-      console.error(`${p('err')}Failed to read tweet: ${result.error}`);
-      process.exit(1);
-    }
-  });
-
-// Replies command - list replies to a tweet
-program
-  .command('replies')
-  .description('List replies to a tweet (by ID or URL)')
-  .argument('<tweet-id-or-url>', 'Tweet ID or URL')
-  .option('--json', 'Output as JSON')
-  .action(async (tweetIdOrUrl: string, cmdOpts: { json?: boolean }) => {
-    const opts = program.opts();
-    const timeoutMs = resolveTimeoutFromOptions(opts);
-    const tweetId = extractTweetId(tweetIdOrUrl);
-
-    const { cookies, warnings } = await resolveCredentialsFromOptions(opts);
-
-    for (const warning of warnings) {
-      console.error(`${p('warn')}${warning}`);
-    }
-
-    if (!cookies.authToken || !cookies.ct0) {
-      console.error(`${p('err')}Missing required credentials`);
-      process.exit(1);
-    }
-
-    const client = new TwitterClient({ cookies, timeoutMs });
-    const result = await client.getReplies(tweetId);
-
-    if (result.success && result.tweets) {
-      printTweets(result.tweets, { json: cmdOpts.json, emptyMessage: 'No replies found.' });
-    } else {
-      console.error(`${p('err')}Failed to fetch replies: ${result.error}`);
-      process.exit(1);
-    }
-  });
-
-// Thread command - show full conversation thread
-program
-  .command('thread')
-  .description('Show the full conversation thread containing the tweet')
-  .argument('<tweet-id-or-url>', 'Tweet ID or URL')
-  .option('--json', 'Output as JSON')
-  .action(async (tweetIdOrUrl: string, cmdOpts: { json?: boolean }) => {
-    const opts = program.opts();
-    const timeoutMs = resolveTimeoutFromOptions(opts);
-    const tweetId = extractTweetId(tweetIdOrUrl);
-
-    const { cookies, warnings } = await resolveCredentialsFromOptions(opts);
-
-    for (const warning of warnings) {
-      console.error(`${p('warn')}${warning}`);
-    }
-
-    if (!cookies.authToken || !cookies.ct0) {
-      console.error(`${p('err')}Missing required credentials`);
-      process.exit(1);
-    }
-
-    const client = new TwitterClient({ cookies, timeoutMs });
-    const result = await client.getThread(tweetId);
-
-    if (result.success && result.tweets) {
-      printTweets(result.tweets, { json: cmdOpts.json, emptyMessage: 'No thread tweets found.' });
-    } else {
-      console.error(`${p('err')}Failed to fetch thread: ${result.error}`);
-      process.exit(1);
-    }
-  });
-
-// Search command - find tweets
-program
-  .command('search')
-  .description('Search for tweets')
-  .argument('<query>', 'Search query (e.g., "@clawdbot" or "from:clawdbot")')
-  .option('-n, --count <number>', 'Number of tweets to fetch', '10')
-  .option('--json', 'Output as JSON')
-  .action(async (query: string, cmdOpts: { count?: string; json?: boolean }) => {
-    const opts = program.opts();
-    const timeoutMs = resolveTimeoutFromOptions(opts);
-    const count = Number.parseInt(cmdOpts.count || '10', 10);
-
-    const { cookies, warnings } = await resolveCredentialsFromOptions(opts);
-
-    for (const warning of warnings) {
-      console.error(`${p('warn')}${warning}`);
-    }
-
-    if (!cookies.authToken || !cookies.ct0) {
-      console.error(`${p('err')}Missing required credentials`);
-      process.exit(1);
-    }
-
-    const client = new TwitterClient({ cookies, timeoutMs });
-    const result = await client.search(query, count);
-
-    if (result.success && result.tweets) {
-      printTweets(result.tweets, { json: cmdOpts.json, emptyMessage: 'No tweets found.' });
-    } else {
-      console.error(`${p('err')}Search failed: ${result.error}`);
-      process.exit(1);
-    }
-  });
-
-// Mentions command - shortcut to search for @username mentions
-program
-  .command('mentions')
-  .description('Find tweets mentioning a user (defaults to current user)')
-  .option('-u, --user <handle>', 'User handle (e.g. @steipete)')
-  .option('-n, --count <number>', 'Number of tweets to fetch', '10')
-  .option('--json', 'Output as JSON')
-  .action(async (cmdOpts: { user?: string; count?: string; json?: boolean }) => {
-    const opts = program.opts();
-    const timeoutMs = resolveTimeoutFromOptions(opts);
-    const count = Number.parseInt(cmdOpts.count || '10', 10);
-
-    const fromUserOpt = mentionsQueryFromUserOption(cmdOpts.user);
-    if (fromUserOpt.error) {
-      console.error(`${p('err')}${fromUserOpt.error}`);
-      process.exit(2);
-    }
-
-    let query: string | null = fromUserOpt.query;
-
-    const { cookies, warnings } = await resolveCredentialsFromOptions(opts);
-
-    for (const warning of warnings) {
-      console.error(`${p('warn')}${warning}`);
-    }
-
-    if (!cookies.authToken || !cookies.ct0) {
-      console.error(`${p('err')}Missing required credentials`);
-      process.exit(1);
-    }
-
-    const client = new TwitterClient({ cookies, timeoutMs });
-
-    if (!query) {
-      const who = await client.getCurrentUser();
-      const handle = normalizeHandle(who.user?.username);
-      if (!handle) {
-        console.error(
-          `${p('err')}Could not determine current user (${who.error ?? 'Unknown error'}). Use --user <handle>.`,
-        );
-        process.exit(1);
-      } else {
-        query = `@${handle}`;
-      }
-    }
-
-    const result = await client.search(query, count);
-
-    if (result.success && result.tweets) {
-      printTweets(result.tweets, { json: cmdOpts.json, emptyMessage: 'No mentions found.' });
-    } else {
-      console.error(`${p('err')}Failed to fetch mentions: ${result.error}`);
-      process.exit(1);
-    }
-  });
-
-// Whoami command - show the logged-in account
-program
-  .command('whoami')
-  .description('Show which Twitter account the current credentials belong to')
-  .action(async () => {
-    const opts = program.opts();
-    const timeoutMs = resolveTimeoutFromOptions(opts);
-
-    const { cookies, warnings } = await resolveCredentialsFromOptions(opts);
-
-    for (const warning of warnings) {
-      console.error(`${p('warn')}${warning}`);
-    }
-
-    if (!cookies.authToken || !cookies.ct0) {
-      console.error(`${p('err')}Missing required credentials`);
-      process.exit(1);
-    }
-
-    if (cookies.source) {
-      console.error(`${l('source')}${cookies.source}`);
-    }
-
-    const client = new TwitterClient({ cookies, timeoutMs });
-    const result = await client.getCurrentUser();
-
-    const credentialSource = cookies.source ?? 'env/auto-detected cookies';
-
-    if (result.success && result.user) {
-      console.log(`${l('user')}@${result.user.username} (${result.user.name})`);
-      console.log(`${l('userId')}${result.user.id}`);
-      console.log(`${l('engine')}graphql`);
-      console.log(`${l('credentials')}${credentialSource}`);
-    } else {
-      console.error(`${p('err')}Failed to determine current user: ${result.error ?? 'Unknown error'}`);
-      process.exit(1);
-    }
-  });
-
-// Check command - verify credentials
-program
-  .command('check')
-  .description('Check credential availability')
-  .action(async () => {
-    const opts = program.opts();
-    const { cookies, warnings } = await resolveCredentialsFromOptions(opts);
-
-    console.log(`${p('info')}Credential check`);
-    console.log('─'.repeat(40));
-
-    if (cookies.authToken) {
-      console.log(`${p('ok')}auth_token: ${cookies.authToken.slice(0, 10)}...`);
-    } else {
-      console.log(`${p('err')}auth_token: not found`);
-    }
-
-    if (cookies.ct0) {
-      console.log(`${p('ok')}ct0: ${cookies.ct0.slice(0, 10)}...`);
-    } else {
-      console.log(`${p('err')}ct0: not found`);
-    }
-
-    if (cookies.source) {
-      console.log(`${l('source')}${cookies.source}`);
-    }
-
-    if (warnings.length > 0) {
-      console.log(`\n${p('warn')}Warnings:`);
-      for (const warning of warnings) {
-        console.log(`   - ${warning}`);
-      }
-    }
-
-    if (cookies.authToken && cookies.ct0) {
-      console.log(`\n${p('ok')}Ready to tweet!`);
-    } else {
-      console.log(`\n${p('err')}Missing credentials. Options:`);
-      console.log('   1. Login to x.com in Safari/Chrome/Firefox');
-      console.log('   2. Set AUTH_TOKEN and CT0 environment variables');
-      console.log('   3. Use --auth-token and --ct0 flags');
-      process.exit(1);
-    }
-  });
-
-const { argv, showHelp } = resolveCliInvocation(normalizedArgs, KNOWN_COMMANDS);
-
-if (showHelp) {
-  program.outputHelp();
-  process.exit(0);
-}
-
-if (argv) {
-  program.parse(argv);
-} else {
-  program.parse(['node', 'bird', ...normalizedArgs]);
-}
+export * from './lib/index.js';

src/lib/cli-args.ts

@@ -8,7 +8,9 @@ const TWEET_ID_REGEX = /^\d{8,}$/;
 
 export function looksLikeTweetInput(value: string): boolean {
   const trimmed = value.trim();
-  if (!trimmed) return false;
+  if (!trimmed) {
+    return false;
+  }
   return TWEET_URL_REGEX.test(trimmed) || TWEET_ID_REGEX.test(trimmed);
 }
 

src/lib/cookies.ts

@@ -1,13 +1,9 @@
 /**
- * Browser cookie extraction for Twitter authentication
- * Uses sqlite3 CLI where possible and binarycookies parsing for Safari.
+ * Browser cookie extraction for Twitter authentication.
+ * Delegates to @steipete/sweet-cookie for Safari/Chrome/Firefox reads.
  */
 
-import { execSync } from 'node:child_process';
-import { createDecipheriv, pbkdf2Sync } from 'node:crypto';
-import { copyFileSync, existsSync, mkdtempSync, readdirSync, readFileSync, rmSync } from 'node:fs';
-import { tmpdir } from 'node:os';
-import { join } from 'node:path';
+import { getCookies } from '@steipete/sweet-cookie';
 
 export interface TwitterCookies {
   authToken: string | null;
@@ -23,457 +19,153 @@ export interface CookieExtractionResult {
 
 export type CookieSource = 'safari' | 'chrome' | 'firefox';
 
+const TWITTER_COOKIE_NAMES = ['auth_token', 'ct0'] as const;
+const TWITTER_URL = 'https://x.com/';
+const TWITTER_ORIGINS: string[] = ['https://x.com/', 'https://twitter.com/'];
+const DEFAULT_COOKIE_TIMEOUT_MS = 30_000;
+
 function normalizeValue(value: unknown): string | null {
-  if (typeof value === 'string') {
+  if (typeof value !== 'string') {
+    return null;
+  }
   const trimmed = value.trim();
   return trimmed.length > 0 ? trimmed : null;
+}
+
+function cookieHeader(authToken: string, ct0: string): string {
+  return `auth_token=${authToken}; ct0=${ct0}`;
+}
+
+function buildEmpty(): TwitterCookies {
+  return { authToken: null, ct0: null, cookieHeader: null, source: null };
+}
+
+function readEnvCookie(cookies: TwitterCookies, keys: readonly string[], field: 'authToken' | 'ct0'): void {
+  if (cookies[field]) {
+    return;
   }
+  for (const key of keys) {
+    const value = normalizeValue(process.env[key]);
+    if (!value) {
+      continue;
+    }
+    cookies[field] = value;
+    if (!cookies.source) {
+      cookies.source = `env ${key}`;
+    }
+    break;
+  }
+}
+
+function resolveSources(cookieSource?: CookieSource | CookieSource[]): CookieSource[] {
+  if (Array.isArray(cookieSource)) {
+    return cookieSource;
+  }
+  if (cookieSource) {
+    return [cookieSource];
+  }
+  return ['safari', 'chrome', 'firefox'];
+}
+
+function labelForSource(source: CookieSource, profile?: string): string {
+  if (source === 'safari') {
+    return 'Safari';
+  }
+  if (source === 'chrome') {
+    return profile ? `Chrome profile "${profile}"` : 'Chrome default profile';
+  }
+  return profile ? `Firefox profile "${profile}"` : 'Firefox default profile';
+}
+
+function pickCookieValue(
+  cookies: Array<{ name?: string; value?: string; domain?: string }>,
+  name: (typeof TWITTER_COOKIE_NAMES)[number],
+): string | null {
+  const matches = cookies.filter((c) => c?.name === name && typeof c.value === 'string');
+  if (matches.length === 0) {
     return null;
-}
-
-function getChromeCookiesPath(profile?: string): string {
-  const home = process.env.HOME || '';
-  const profileDir = profile || 'Default';
-  return join(home, 'Library', 'Application Support', 'Google', 'Chrome', profileDir, 'Cookies');
-}
-
-function getFirefoxProfilesRoot(): string | null {
-  const home = process.env.HOME || '';
-  if (process.platform === 'darwin') {
-    return join(home, 'Library', 'Application Support', 'Firefox', 'Profiles');
-  }
-  if (process.platform === 'linux') {
-    return join(home, '.mozilla', 'firefox');
-  }
-  if (process.platform === 'win32') {
-    const appData = process.env.APPDATA;
-    if (!appData) return null;
-    return join(appData, 'Mozilla', 'Firefox', 'Profiles');
-  }
-  return null;
-}
-
-function pickFirefoxProfile(profilesRoot: string, profile?: string): string | null {
-  if (profile) {
-    const candidate = join(profilesRoot, profile, 'cookies.sqlite');
-    return existsSync(candidate) ? candidate : null;
   }
 
-  const entries = readdirSync(profilesRoot, { withFileTypes: true });
-  const defaultRelease = entries.find((entry) => entry.isDirectory() && entry.name.includes('default-release'));
-  const targetDir = defaultRelease?.name ?? entries.find((e) => e.isDirectory())?.name;
-  if (!targetDir) return null;
-
-  const candidate = join(profilesRoot, targetDir, 'cookies.sqlite');
-  return existsSync(candidate) ? candidate : null;
-}
-
-function getFirefoxCookiesPath(profile?: string): string | null {
-  const profilesRoot = getFirefoxProfilesRoot();
-  if (!profilesRoot || !existsSync(profilesRoot)) return null;
-  return pickFirefoxProfile(profilesRoot, profile);
-}
-
-function getSafariCookiesPath(): string | null {
-  if (process.platform !== 'darwin') return null;
-  const home = process.env.HOME || '';
-  const candidates = [
-    join(home, 'Library', 'Cookies', 'Cookies.binarycookies'),
-    join(home, 'Library', 'Containers', 'com.apple.Safari', 'Data', 'Library', 'Cookies', 'Cookies.binarycookies'),
-  ];
-  for (const candidate of candidates) {
-    if (existsSync(candidate)) return candidate;
-  }
-  return null;
-}
-
-const SAFARI_COOKIE_DOMAINS = ['x.com', 'twitter.com'];
-const SAFARI_PAGE_SIGNATURE = Buffer.from([0x00, 0x00, 0x01, 0x00]);
-
-function matchesSafariDomain(domain: string | null): boolean {
-  if (!domain) return false;
-  const normalized = (domain.startsWith('.') ? domain.slice(1) : domain).toLowerCase();
-  return SAFARI_COOKIE_DOMAINS.some((target) => normalized === target || normalized.endsWith(`.${target}`));
-}
-
-function readSafariCString(buffer: Buffer, start: number, end: number): string | null {
-  if (start < 0 || start >= end) return null;
-  let cursor = start;
-  while (cursor < end && buffer[cursor] !== 0) cursor += 1;
-  if (cursor >= end) return null;
-  return buffer.toString('utf8', start, cursor);
-}
-
-function serializeCookieJar(jar: Record<string, string>): string {
-  const entries = Object.entries(jar)
-    .filter(([, value]) => typeof value === 'string' && value.length > 0)
-    .sort(([a], [b]) => a.localeCompare(b));
-  return entries.map(([name, value]) => `${name}=${value}`).join('; ');
-}
-
-function parseSafariCookieRecord(
-  page: Buffer,
-  offset: number,
-  jar: Record<string, string>,
-  cookies: TwitterCookies,
-): void {
-  if (offset < 0 || offset + 4 > page.length) return;
-  const recordSize = page.readUInt32LE(offset);
-  const recordEnd = offset + recordSize;
-  if (recordSize <= 0 || recordEnd > page.length) return;
-
-  const headerStart = offset + 4;
-  const headerSize = 4 + 4 + 4 + 4 + 4 + 4 + 4; // unknown1 + flags + unknown2 + domain + name + path + value
-  if (headerStart + headerSize > recordEnd) return;
-
-  const domainOffset = page.readUInt32LE(headerStart + 12);
-  const nameOffset = page.readUInt32LE(headerStart + 16);
-  const valueOffset = page.readUInt32LE(headerStart + 24);
-
-  const domain = readSafariCString(page, offset + domainOffset, recordEnd);
-  const name = readSafariCString(page, offset + nameOffset, recordEnd);
-  const value = readSafariCString(page, offset + valueOffset, recordEnd);
-
-  if (!name || !value || !matchesSafariDomain(domain)) return;
-
-  const normalizedValue = normalizeValue(value);
-  if (!normalizedValue) return;
-
-  jar[name] = normalizedValue;
-
-  if (name === 'auth_token' && !cookies.authToken) {
-    cookies.authToken = normalizedValue;
-  } else if (name === 'ct0' && !cookies.ct0) {
-    cookies.ct0 = normalizedValue;
-  }
-}
-
-function parseSafariCookiePage(page: Buffer, jar: Record<string, string>, cookies: TwitterCookies): void {
-  if (page.length < 12) return;
-  if (!page.subarray(0, 4).equals(SAFARI_PAGE_SIGNATURE)) return;
-  const cookieCount = page.readUInt32LE(4);
-  if (!cookieCount) return;
-
-  const offsets: number[] = [];
-  let cursor = 8;
-  for (let i = 0; i < cookieCount; i += 1) {
-    if (cursor + 4 > page.length) return;
-    offsets.push(page.readUInt32LE(cursor));
-    cursor += 4;
+  const preferred = matches.find((c) => (c.domain ?? '').endsWith('x.com'));
+  if (preferred?.value) {
+    return preferred.value;
   }
 
-  for (const offset of offsets) {
-    parseSafariCookieRecord(page, offset, jar, cookies);
+  const twitter = matches.find((c) => (c.domain ?? '').endsWith('twitter.com'));
+  if (twitter?.value) {
+    return twitter.value;
   }
+
+  return matches[0]?.value ?? null;
 }
 
-function parseSafariCookies(data: Buffer, jar: Record<string, string>, cookies: TwitterCookies): void {
-  if (data.length < 8) return;
-  if (data.subarray(0, 4).toString('utf8') !== 'cook') return;
-  const pageCount = data.readUInt32BE(4);
-  let cursor = 8;
-  const pageSizes: number[] = [];
-  for (let i = 0; i < pageCount; i += 1) {
-    if (cursor + 4 > data.length) return;
-    pageSizes.push(data.readUInt32BE(cursor));
-    cursor += 4;
-  }
-
-  for (const pageSize of pageSizes) {
-    if (cursor + pageSize > data.length) return;
-    const page = data.subarray(cursor, cursor + pageSize);
-    parseSafariCookiePage(page, jar, cookies);
-    cursor += pageSize;
-  }
-}
-
-/**
- * Extract Twitter cookies from Safari browser using Cookies.binarycookies
- */
-export async function extractCookiesFromSafari(): Promise<CookieExtractionResult> {
+async function readTwitterCookiesFromBrowser(options: {
+  source: CookieSource;
+  chromeProfile?: string;
+  firefoxProfile?: string;
+  cookieTimeoutMs?: number;
+}): Promise<CookieExtractionResult> {
   const warnings: string[] = [];
-  const cookies: TwitterCookies = {
-    authToken: null,
-    ct0: null,
-    cookieHeader: null,
-    source: null,
-  };
+  const out = buildEmpty();
 
-  const cookiesPath = getSafariCookiesPath();
-  if (!cookiesPath) {
-    warnings.push('Safari cookies database not found.');
-    return { cookies, warnings };
+  const { cookies, warnings: providerWarnings } = await getCookies({
+    url: TWITTER_URL,
+    origins: TWITTER_ORIGINS,
+    names: [...TWITTER_COOKIE_NAMES],
+    browsers: [options.source],
+    mode: 'merge',
+    chromeProfile: options.chromeProfile,
+    firefoxProfile: options.firefoxProfile,
+    timeoutMs: options.cookieTimeoutMs,
+  });
+  warnings.push(...providerWarnings);
+
+  const authToken = pickCookieValue(cookies, 'auth_token');
+  const ct0 = pickCookieValue(cookies, 'ct0');
+  if (authToken) {
+    out.authToken = authToken;
+  }
+  if (ct0) {
+    out.ct0 = ct0;
   }
 
-  let tempDir: string | null = null;
-
-  try {
-    const jar: Record<string, string> = {};
-    tempDir = mkdtempSync(join(tmpdir(), 'twitter-cli-'));
-    const tempCookiesPath = join(tempDir, 'Cookies.binarycookies');
-    copyFileSync(cookiesPath, tempCookiesPath);
-    const data = readFileSync(tempCookiesPath);
-    parseSafariCookies(data, jar, cookies);
-    if (Object.keys(jar).length > 0) {
-      cookies.cookieHeader = serializeCookieJar(jar);
+  if (out.authToken && out.ct0) {
+    out.cookieHeader = cookieHeader(out.authToken, out.ct0);
+    out.source = labelForSource(
+      options.source,
+      options.source === 'chrome' ? options.chromeProfile : options.firefoxProfile,
+    );
+    return { cookies: out, warnings };
   }
 
-    if (cookies.authToken || cookies.ct0) {
-      cookies.source = 'Safari';
-    }
-  } catch (error) {
-    const message = error instanceof Error ? error.message : String(error);
-    warnings.push(`Failed to read Safari cookies: ${message}`);
-  } finally {
-    if (tempDir) {
-      try {
-        rmSync(tempDir, { recursive: true, force: true });
-      } catch {
-        // ignore cleanup errors
-      }
-    }
-  }
-
-  if (!cookies.authToken && !cookies.ct0) {
+  if (options.source === 'safari') {
     warnings.push('No Twitter cookies found in Safari. Make sure you are logged into x.com in Safari.');
-  }
-
-  return { cookies, warnings };
-}
-
-/**
- * Decrypt Chrome cookie value using macOS keychain
- * Chrome encrypts cookies with a key stored in the keychain
- */
-function decryptCookieValue(encryptedHex: string): string | null {
-  try {
-    // Convert hex to buffer
-    const encryptedValue = Buffer.from(encryptedHex, 'hex');
-
-    if (encryptedValue.length < 4) {
-      return null;
-    }
-
-    const version = encryptedValue.subarray(0, 3).toString('utf8');
-    if (version !== 'v10' && version !== 'v11') {
-      // Not encrypted, just return as string
-      return encryptedValue.toString('utf8');
-    }
-
-    // Get encryption key from keychain
-    const keyOutput = execSync('security find-generic-password -s "Chrome Safe Storage" -w 2>/dev/null || echo ""', {
-      encoding: 'utf8',
-    }).trim();
-
-    if (!keyOutput) {
-      return null;
-    }
-
-    // Derive the key using PBKDF2
-    const salt = 'saltysalt';
-    const iterations = 1003;
-    const keyLength = 16;
-
-    const derivedKey = pbkdf2Sync(keyOutput, salt, iterations, keyLength, 'sha1');
-
-    // Decrypt using AES-128-CBC with empty IV (16 bytes of 0x20/space)
-    const iv = Buffer.alloc(16, 0x20);
-    const encryptedData = encryptedValue.subarray(3); // Skip "v10" or "v11" prefix
-
-    const decipher = createDecipheriv('aes-128-cbc', derivedKey, iv);
-    decipher.setAutoPadding(true);
-
-    let decrypted = decipher.update(encryptedData);
-    decrypted = Buffer.concat([decrypted, decipher.final()]);
-
-    // Chrome v10 cookies have key material prepended before the actual value
-    // Twitter cookies are hex strings, so extract the longest hex sequence
-    const decryptedStr = decrypted.toString('utf8');
-    const hexMatch = decryptedStr.match(/[a-f0-9]{32,}/i);
-    if (hexMatch) {
-      return hexMatch[0];
-    }
-    // Fallback: keep only printable ASCII characters
-    return decryptedStr.replace(/[^\x20-\x7E]/g, '');
-  } catch {
-    return null;
-  }
-}
-
-/**
- * Extract Twitter cookies from Chrome browser using sqlite3 CLI
- * @param profile - Chrome profile name (optional, uses Default if not specified)
- */
-export async function extractCookiesFromChrome(profile?: string): Promise<CookieExtractionResult> {
-  const warnings: string[] = [];
-  const cookies: TwitterCookies = {
-    authToken: null,
-    ct0: null,
-    cookieHeader: null,
-    source: null,
-  };
-
-  const cookiesPath = getChromeCookiesPath(profile);
-
-  if (!existsSync(cookiesPath)) {
-    warnings.push(`Chrome cookies database not found at: ${cookiesPath}`);
-    return { cookies, warnings };
-  }
-
-  // Chrome locks the database, so we need to copy it
-  let tempDir: string | null = null;
-
-  try {
-    tempDir = mkdtempSync(join(tmpdir(), 'twitter-cli-'));
-    const tempDbPath = join(tempDir, 'Cookies');
-    copyFileSync(cookiesPath, tempDbPath);
-
-    // Also copy the WAL and SHM files if they exist
-    const walPath = `${cookiesPath}-wal`;
-    const shmPath = `${cookiesPath}-shm`;
-    if (existsSync(walPath)) {
-      copyFileSync(walPath, `${tempDbPath}-wal`);
-    }
-    if (existsSync(shmPath)) {
-      copyFileSync(shmPath, `${tempDbPath}-shm`);
-    }
-
-    const jar: Record<string, string> = {};
-
-    // Use sqlite3 CLI to query cookies (no native deps required!)
-    const query = `SELECT name, hex(encrypted_value) as encrypted_hex FROM cookies WHERE host_key IN ('.x.com', '.twitter.com', 'x.com', 'twitter.com');`;
-
-    const result = execSync(`sqlite3 -separator '|' "${tempDbPath}" "${query}"`, {
-      encoding: 'utf8',
-      maxBuffer: 1024 * 1024,
-    }).trim();
-
-    if (result) {
-      for (const line of result.split('\n')) {
-        const [name, encryptedHex] = line.split('|');
-        if (!name || !encryptedHex) continue;
-
-        const decryptedValue = decryptCookieValue(encryptedHex);
-        if (decryptedValue) {
-          jar[name] = decryptedValue;
-          if (name === 'auth_token' && !cookies.authToken) {
-            cookies.authToken = decryptedValue;
-          } else if (name === 'ct0' && !cookies.ct0) {
-            cookies.ct0 = decryptedValue;
-          }
-        }
-      }
-    }
-
-    if (Object.keys(jar).length > 0) {
-      cookies.cookieHeader = serializeCookieJar(jar);
-    }
-
-    if (cookies.authToken || cookies.ct0) {
-      cookies.source = profile ? `Chrome profile "${profile}"` : 'Chrome default profile';
-    }
-  } catch (error) {
-    const message = error instanceof Error ? error.message : String(error);
-    warnings.push(`Failed to read Chrome cookies: ${message}`);
-  } finally {
-    // Cleanup temp files
-    if (tempDir) {
-      try {
-        rmSync(tempDir, { recursive: true, force: true });
-      } catch {
-        // Ignore cleanup errors
-      }
-    }
-  }
-
-  if (!cookies.authToken && !cookies.ct0) {
+  } else if (options.source === 'chrome') {
     warnings.push('No Twitter cookies found in Chrome. Make sure you are logged into x.com in Chrome.');
-  }
-
-  return { cookies, warnings };
-}
-
-/**
- * Extract Twitter cookies from Firefox browser using sqlite3 CLI
- * @param profile - Firefox profile directory name (optional, auto-detected)
- */
-export async function extractCookiesFromFirefox(profile?: string): Promise<CookieExtractionResult> {
-  const warnings: string[] = [];
-  const cookies: TwitterCookies = {
-    authToken: null,
-    ct0: null,
-    cookieHeader: null,
-    source: null,
-  };
-
-  const cookiesPath = getFirefoxCookiesPath(profile);
-
-  if (!cookiesPath) {
-    warnings.push('Firefox cookies database not found.');
-    return { cookies, warnings };
-  }
-
-  let tempDir: string | null = null;
-
-  try {
-    tempDir = mkdtempSync(join(tmpdir(), 'twitter-cli-'));
-    const tempDbPath = join(tempDir, 'cookies.sqlite');
-    copyFileSync(cookiesPath, tempDbPath);
-
-    const jar: Record<string, string> = {};
-
-    const query = `SELECT name, value FROM moz_cookies WHERE host IN ('.x.com', '.twitter.com', 'x.com', 'twitter.com');`;
-
-    const result = execSync(`sqlite3 -separator '|' "${tempDbPath}" "${query}"`, {
-      encoding: 'utf8',
-      maxBuffer: 1024 * 1024,
-    }).trim();
-
-    if (result) {
-      for (const line of result.split('\n')) {
-        const [name, value] = line.split('|');
-        if (!name || !value) continue;
-        jar[name] = value;
-        if (name === 'auth_token' && !cookies.authToken) {
-          cookies.authToken = value;
-        } else if (name === 'ct0' && !cookies.ct0) {
-          cookies.ct0 = value;
-        }
-      }
-    }
-
-    if (Object.keys(jar).length > 0) {
-      cookies.cookieHeader = serializeCookieJar(jar);
-    }
-
-    if (cookies.authToken || cookies.ct0) {
-      cookies.source = profile ? `Firefox profile "${profile}"` : 'Firefox default profile';
-    }
-  } catch (error) {
-    const message = error instanceof Error ? error.message : String(error);
-    warnings.push(`Failed to read Firefox cookies: ${message}`);
-  } finally {
-    if (tempDir) {
-      try {
-        rmSync(tempDir, { recursive: true, force: true });
-      } catch {
-        // ignore cleanup errors
-      }
-    }
-  }
-
-  if (!cookies.authToken && !cookies.ct0) {
+  } else {
     warnings.push(
       'No Twitter cookies found in Firefox. Make sure you are logged into x.com in Firefox and the profile exists.',
     );
   }
 
-  return { cookies, warnings };
+  return { cookies: out, warnings };
+}
+
+export async function extractCookiesFromSafari(): Promise<CookieExtractionResult> {
+  return readTwitterCookiesFromBrowser({ source: 'safari' });
+}
+
+export async function extractCookiesFromChrome(profile?: string): Promise<CookieExtractionResult> {
+  return readTwitterCookiesFromBrowser({ source: 'chrome', chromeProfile: profile });
+}
+
+export async function extractCookiesFromFirefox(profile?: string): Promise<CookieExtractionResult> {
+  return readTwitterCookiesFromBrowser({ source: 'firefox', firefoxProfile: profile });
 }
 
 /**
- * Resolve Twitter credentials from multiple sources
- * Priority: CLI args > environment variables > Safari > Chrome > Firefox
+ * Resolve Twitter credentials from multiple sources.
+ * Priority: CLI args > environment variables > browsers (ordered).
  */
 export async function resolveCredentials(options: {
   authToken?: string;
@@ -481,93 +173,52 @@ export async function resolveCredentials(options: {
   cookieSource?: CookieSource | CookieSource[];
   chromeProfile?: string;
   firefoxProfile?: string;
+  cookieTimeoutMs?: number;
 }): Promise<CookieExtractionResult> {
   const warnings: string[] = [];
-  const cookies: TwitterCookies = {
-    authToken: null,
-    ct0: null,
-    cookieHeader: null,
-    source: null,
-  };
+  const cookies = buildEmpty();
+  const cookieTimeoutMs =
+    typeof options.cookieTimeoutMs === 'number' &&
+    Number.isFinite(options.cookieTimeoutMs) &&
+    options.cookieTimeoutMs > 0
+      ? options.cookieTimeoutMs
+      : process.platform === 'darwin'
+        ? DEFAULT_COOKIE_TIMEOUT_MS
+        : undefined;
 
-  const cookieSource = options.cookieSource;
-
-  // 1. CLI arguments (highest priority)
   if (options.authToken) {
     cookies.authToken = options.authToken;
     cookies.source = 'CLI argument';
   }
   if (options.ct0) {
     cookies.ct0 = options.ct0;
-    if (!cookies.source) cookies.source = 'CLI argument';
-  }
-
-  // 2. Environment variables
-  const envAuthKeys = ['AUTH_TOKEN', 'TWITTER_AUTH_TOKEN'];
-  const envCt0Keys = ['CT0', 'TWITTER_CT0'];
-
-  if (!cookies.authToken) {
-    for (const key of envAuthKeys) {
-      const value = normalizeValue(process.env[key]);
-      if (value) {
-        cookies.authToken = value;
-        cookies.source = `env ${key}`;
-        break;
-      }
+    if (!cookies.source) {
+      cookies.source = 'CLI argument';
     }
   }
 
-  if (!cookies.ct0) {
-    for (const key of envCt0Keys) {
-      const value = normalizeValue(process.env[key]);
-      if (value) {
-        cookies.ct0 = value;
-        if (!cookies.source) cookies.source = `env ${key}`;
-        break;
-      }
-    }
-  }
+  readEnvCookie(cookies, ['AUTH_TOKEN', 'TWITTER_AUTH_TOKEN'], 'authToken');
+  readEnvCookie(cookies, ['CT0', 'TWITTER_CT0'], 'ct0');
 
   if (cookies.authToken && cookies.ct0) {
-    cookies.cookieHeader = `auth_token=${cookies.authToken}; ct0=${cookies.ct0}`;
+    cookies.cookieHeader = cookieHeader(cookies.authToken, cookies.ct0);
     return { cookies, warnings };
   }
 
-  const sourcesToTry: CookieSource[] = Array.isArray(cookieSource)
-    ? cookieSource
-    : cookieSource
-      ? [cookieSource]
-      : ['safari', 'chrome', 'firefox'];
-
+  const sourcesToTry = resolveSources(options.cookieSource);
   for (const source of sourcesToTry) {
-    if (source === 'safari') {
-      const safariResult = await extractCookiesFromSafari();
-      warnings.push(...safariResult.warnings);
-      if (safariResult.cookies.authToken && safariResult.cookies.ct0) {
-        return { cookies: safariResult.cookies, warnings };
-      }
-      continue;
-    }
-
-    if (source === 'chrome') {
-      const chromeResult = await extractCookiesFromChrome(options.chromeProfile);
-      warnings.push(...chromeResult.warnings);
-      if (chromeResult.cookies.authToken && chromeResult.cookies.ct0) {
-        return { cookies: chromeResult.cookies, warnings };
-      }
-      continue;
-    }
-
-    if (source === 'firefox') {
-      const firefoxResult = await extractCookiesFromFirefox(options.firefoxProfile);
-      warnings.push(...firefoxResult.warnings);
-      if (firefoxResult.cookies.authToken && firefoxResult.cookies.ct0) {
-        return { cookies: firefoxResult.cookies, warnings };
-      }
+    const res = await readTwitterCookiesFromBrowser({
+      source,
+      chromeProfile: options.chromeProfile,
+      firefoxProfile: options.firefoxProfile,
+      cookieTimeoutMs,
+    });
+    warnings.push(...res.warnings);
+    if (res.cookies.authToken && res.cookies.ct0) {
+      return { cookies: res.cookies, warnings };
     }
   }
 
-  // Validation
   if (!cookies.authToken) {
     warnings.push(
       'Missing auth_token - provide via --auth-token, AUTH_TOKEN env var, or login to x.com in Safari/Chrome/Firefox',
@@ -576,9 +227,8 @@ export async function resolveCredentials(options: {
   if (!cookies.ct0) {
     warnings.push('Missing ct0 - provide via --ct0, CT0 env var, or login to x.com in Safari/Chrome/Firefox');
   }
-
   if (cookies.authToken && cookies.ct0) {
-    cookies.cookieHeader = `auth_token=${cookies.authToken}; ct0=${cookies.ct0}`;
+    cookies.cookieHeader = cookieHeader(cookies.authToken, cookies.ct0);
   }
 
   return { cookies, warnings };

src/lib/extract-bookmark-folder-id.ts

@@ -0,0 +1,20 @@
+/**
+ * Extract bookmark folder (collection) ID from an X/Twitter bookmarks URL.
+ */
+const BOOKMARK_FOLDER_URL_REGEX = /(?:twitter\.com|x\.com)\/i\/bookmarks\/(\d+)/i;
+const BOOKMARK_FOLDER_ID_REGEX = /^\d{5,}$/;
+
+export function extractBookmarkFolderId(input: string): string | null {
+  const trimmed = input.trim();
+  if (!trimmed) {
+    return null;
+  }
+  const urlMatch = BOOKMARK_FOLDER_URL_REGEX.exec(trimmed);
+  if (urlMatch) {
+    return urlMatch[1];
+  }
+  if (BOOKMARK_FOLDER_ID_REGEX.test(trimmed)) {
+    return trimmed;
+  }
+  return null;
+}

src/lib/extract-list-id.ts

@@ -0,0 +1,20 @@
+// ABOUTME: Extract list ID from an X/Twitter list URL.
+// ABOUTME: Returns list ID or null if input is invalid.
+
+const LIST_URL_REGEX = /(?:twitter\.com|x\.com)\/i\/lists\/(\d+)/i;
+const LIST_ID_REGEX = /^\d{5,}$/;
+
+export function extractListId(input: string): string | null {
+  const trimmed = input.trim();
+  if (!trimmed) {
+    return null;
+  }
+  const urlMatch = LIST_URL_REGEX.exec(trimmed);
+  if (urlMatch) {
+    return urlMatch[1];
+  }
+  if (LIST_ID_REGEX.test(trimmed)) {
+    return trimmed;
+  }
+  return null;
+}

src/lib/extract-tweet-id.ts

@@ -1,9 +1,11 @@
 /**
  * Extract tweet ID from a Twitter/X URL or return the input unchanged if it's already an ID.
  */
+const TWEET_URL_REGEX = /(?:twitter\.com|x\.com)\/(?:\w+\/status|i\/web\/status)\/(\d+)/i;
+
 export function extractTweetId(input: string): string {
   // If it's a URL, extract the tweet ID
-  const urlMatch = input.match(/(?:twitter\.com|x\.com)\/\w+\/status\/(\d+)/);
+  const urlMatch = TWEET_URL_REGEX.exec(input);
   if (urlMatch) {
     return urlMatch[1];
   }

src/lib/features.json

@@ -0,0 +1,5 @@
+{
+  "global": {
+    "responsive_web_grok_annotations_enabled": false
+  }
+}

src/lib/index.ts

@@ -0,0 +1,26 @@
+export {
+  type CookieExtractionResult,
+  type CookieSource,
+  extractCookiesFromChrome,
+  extractCookiesFromFirefox,
+  extractCookiesFromSafari,
+  resolveCredentials,
+  type TwitterCookies,
+} from './cookies.js';
+export { runtimeQueryIds } from './runtime-query-ids.js';
+export {
+  type CurrentUserResult,
+  type FollowingResult,
+  type GetTweetResult,
+  type SearchResult,
+  type TweetData,
+  TwitterClient,
+  type TwitterClientOptions,
+  type TwitterUser,
+} from './twitter-client.js';
+export type { HomeTimelineFetchOptions } from './twitter-client-home.js';
+export type { ExploreTab, NewsFetchOptions, NewsItem, NewsResult } from './twitter-client-news.js';
+export type { SearchFetchOptions } from './twitter-client-search.js';
+export type { TimelineFetchOptions } from './twitter-client-timelines.js';
+export type { TweetFetchOptions } from './twitter-client-tweet-detail.js';
+export type { TweetResult, UploadMediaResult } from './twitter-client-types.js';

src/lib/normalize-handle.ts

@@ -1,13 +1,21 @@
+const HANDLE_REGEX = /^[A-Za-z0-9_]{1,15}$/;
+
 export function normalizeHandle(input?: string | null): string | null {
   const raw = (input ?? '').trim();
-  if (!raw) return null;
+  if (!raw) {
+    return null;
+  }
 
   const withoutAt = raw.startsWith('@') ? raw.slice(1) : raw;
   const handle = withoutAt.trim();
-  if (!handle) return null;
+  if (!handle) {
+    return null;
+  }
 
   // X/Twitter handles are traditionally max 15 chars; keep strict to avoid surprising queries.
-  if (!/^[A-Za-z0-9_]{1,15}$/.test(handle)) return null;
+  if (!HANDLE_REGEX.test(handle)) {
+    return null;
+  }
 
   return handle;
 }
@@ -16,7 +24,9 @@ export function mentionsQueryFromUserOption(userOption?: string | null): {
   query: string | null;
   error: string | null;
 } {
-  if (typeof userOption === 'undefined') return { query: null, error: null };
+  if (typeof userOption === 'undefined') {
+    return { query: null, error: null };
+  }
 
   const handle = normalizeHandle(userOption);
   if (!handle) {

src/lib/output.ts

@@ -2,6 +2,7 @@ export type OutputConfig = {
   plain: boolean;
   emoji: boolean;
   color: boolean;
+  hyperlinks: boolean;
 };
 
 export type StatusKind = 'ok' | 'warn' | 'err' | 'info' | 'hint';
@@ -33,8 +34,9 @@ export function resolveOutputConfigFromArgv(argv: string[], env: NodeJS.ProcessE
   const plain = argv.includes('--plain');
   const emoji = !plain && !argv.includes('--no-emoji');
   const color = !plain && !argv.includes('--no-color') && defaultColor;
+  const hyperlinks = !plain && isTty;
 
-  return { plain, emoji, color };
+  return { plain, emoji, color, hyperlinks };
 }
 
 export function resolveOutputConfigFromCommander(
@@ -48,19 +50,28 @@ export function resolveOutputConfigFromCommander(
   const plain = Boolean(opts.plain);
   const emoji = !plain && (opts.emoji ?? true);
   const color = !plain && (opts.color ?? true) && defaultColor;
+  const hyperlinks = !plain && isTty;
 
-  return { plain, emoji, color };
+  return { plain, emoji, color, hyperlinks };
 }
 
 export function statusPrefix(kind: StatusKind, cfg: OutputConfig): string {
-  if (cfg.plain) return `${STATUS[kind].plain} `;
-  if (cfg.emoji) return `${STATUS[kind].emoji} `;
+  if (cfg.plain) {
+    return `${STATUS[kind].plain} `;
+  }
+  if (cfg.emoji) {
+    return `${STATUS[kind].emoji} `;
+  }
   return `${STATUS[kind].text} `;
 }
 
 export function labelPrefix(kind: LabelKind, cfg: OutputConfig): string {
-  if (cfg.plain) return `${LABELS[kind].plain} `;
-  if (cfg.emoji) return `${LABELS[kind].emoji} `;
+  if (cfg.plain) {
+    return `${LABELS[kind].plain} `;
+  }
+  if (cfg.emoji) {
+    return `${LABELS[kind].emoji} `;
+  }
   return `${LABELS[kind].text} `;
 }
 
@@ -72,8 +83,12 @@ export function formatStatsLine(
   const retweetCount = stats.retweetCount ?? 0;
   const replyCount = stats.replyCount ?? 0;
 
-  if (cfg.plain) return `likes: ${likeCount}  retweets: ${retweetCount}  replies: ${replyCount}`;
-  if (!cfg.emoji) return `Likes ${likeCount}  Retweets ${retweetCount}  Replies ${replyCount}`;
+  if (cfg.plain) {
+    return `likes: ${likeCount}  retweets: ${retweetCount}  replies: ${replyCount}`;
+  }
+  if (!cfg.emoji) {
+    return `Likes ${likeCount}  Retweets ${retweetCount}  Replies ${replyCount}`;
+  }
   return `❤️ ${likeCount}  🔁 ${retweetCount}  💬 ${replyCount}`;
 }
 
@@ -81,6 +96,23 @@ export function formatTweetUrl(tweetId: string): string {
   return `https://x.com/i/status/${tweetId}`;
 }
 
+/**
+ * Wraps a URL in OSC 8 escape sequences to make it clickable in supported terminals.
+ * Falls back to plain text when not in a TTY or when hyperlinks are disabled.
+ */
+export function hyperlink(url: string, text?: string, cfg?: OutputConfig): string {
+  const displayText = text ?? url;
+  // Only use hyperlinks when explicitly enabled (requires TTY and not plain mode)
+  if (!cfg?.hyperlinks) {
+    return displayText;
+  }
+  const safeUrl = url.replaceAll('\x1b', '').replaceAll('\x07', '');
+  const safeText = displayText.replaceAll('\x1b', '').replaceAll('\x07', '');
+  // OSC 8 hyperlink: \x1b]8;;URL\x07TEXT\x1b]8;;\x07
+  return `\x1b]8;;${safeUrl}\x07${safeText}\x1b]8;;\x07`;
+}
+
 export function formatTweetUrlLine(tweetId: string, cfg: OutputConfig): string {
-  return `${labelPrefix('url', cfg)}${formatTweetUrl(tweetId)}`;
+  const url = formatTweetUrl(tweetId);
+  return `${labelPrefix('url', cfg)}${hyperlink(url, url, cfg)}`;
 }

src/lib/paginate-cursor.ts

@@ -0,0 +1,73 @@
+export type CursorPage<T> =
+  | {
+      success: true;
+      items: T[];
+      cursor?: string;
+    }
+  | {
+      success: false;
+      error: string;
+    };
+
+export type CursorPaginationResult<T> =
+  | {
+      success: true;
+      items: T[];
+      nextCursor?: string;
+    }
+  | {
+      success: false;
+      error: string;
+      items?: T[];
+      nextCursor?: string;
+    };
+
+export async function paginateCursor<T>(opts: {
+  cursor?: string;
+  maxPages?: number;
+  pageDelayMs?: number;
+  sleep: (ms: number) => Promise<void>;
+  getKey: (item: T) => string;
+  fetchPage: (cursor?: string) => Promise<CursorPage<T>>;
+}): Promise<CursorPaginationResult<T>> {
+  const { maxPages, pageDelayMs = 1000 } = opts;
+  const seen = new Set<string>();
+  const items: T[] = [];
+  let cursor: string | undefined = opts.cursor;
+  let pagesFetched = 0;
+
+  while (true) {
+    if (pagesFetched > 0 && pageDelayMs > 0) {
+      await opts.sleep(pageDelayMs);
+    }
+
+    const page = await opts.fetchPage(cursor);
+    if (!page.success) {
+      if (items.length > 0) {
+        return { success: false, error: page.error, items, nextCursor: cursor };
+      }
+      return page;
+    }
+    pagesFetched += 1;
+
+    for (const item of page.items) {
+      const key = opts.getKey(item);
+      if (seen.has(key)) {
+        continue;
+      }
+      seen.add(key);
+      items.push(item);
+    }
+
+    const pageCursor = page.cursor;
+    if (!pageCursor || pageCursor === cursor) {
+      return { success: true, items, nextCursor: undefined };
+    }
+
+    if (maxPages !== undefined && pagesFetched >= maxPages) {
+      return { success: true, items, nextCursor: pageCursor };
+    }
+
+    cursor = pageCursor;
+  }
+}

src/lib/query-ids.json

@@ -1,7 +1,17 @@
 {
-  "CreateTweet": "Uf3io9zVp1DsYxrmL5FJ7g",
+  "CreateTweet": "nmdAQXJDxw6-0KKF2on7eA",
   "CreateRetweet": "LFho5rIi4xcKO90p9jwG7A",
   "FavoriteTweet": "lI07N6Otwv1PhnEgXILM7A",
-  "TweetDetail": "97JF30KziU00483E_8elBA",
-  "SearchTimeline": "M1jEez78PEfVfbQLvlWMvQ"
+  "DeleteBookmark": "Wlmlj2-xzyS1GN3a6cj-mQ",
+  "TweetDetail": "_NvJCnIjOW__EP5-RF197A",
+  "SearchTimeline": "6AAys3t42mosm_yTI_QENg",
+  "Bookmarks": "RV1g3b8n_SGOHwkqKYSCFw",
+  "BookmarkFolderTimeline": "KJIQpsvxrTfRIlbaRIySHQ",
+  "Following": "mWYeougg_ocJS2Vr1Vt28w",
+  "Followers": "SFYY3WsgwjlXSLlfnEUE4A",
+  "Likes": "ETJflBunfqNa1uE1mBPCaw",
+  "ExploreSidebar": "lpSN4M6qpimkF4nRFPE3nQ",
+  "ExplorePage": "kheAINB_4pzRDqkzG3K-ng",
+  "GenericTimelineById": "uGSr7alSjR9v6QJAIaqSKQ",
+  "TrendHistory": "Sj4T-jSB9pr0Mxtsc1UKZQ"
 }

src/lib/runtime-features.ts

@@ -0,0 +1,184 @@
+import { existsSync, readFileSync } from 'node:fs';
+import { mkdir, writeFile } from 'node:fs/promises';
+import { homedir } from 'node:os';
+import path from 'node:path';
+// biome-ignore lint/correctness/useImportExtensions: JSON module import doesn't use .js extension.
+import defaultOverrides from './features.json' with { type: 'json' };
+
+export type FeatureOverrides = {
+  global?: Record<string, boolean>;
+  sets?: Record<string, Record<string, boolean>>;
+};
+
+type NormalizedFeatureOverrides = {
+  global: Record<string, boolean>;
+  sets: Record<string, Record<string, boolean>>;
+};
+
+export type FeatureOverridesSnapshot = {
+  cachePath: string;
+  overrides: FeatureOverrides;
+};
+
+const DEFAULT_CACHE_FILENAME = 'features.json';
+let cachedOverrides: NormalizedFeatureOverrides | null = null;
+
+function normalizeFeatureMap(value: unknown): Record<string, boolean> {
+  if (!value || typeof value !== 'object' || Array.isArray(value)) {
+    return {};
+  }
+  const result: Record<string, boolean> = {};
+  for (const [key, entry] of Object.entries(value as Record<string, unknown>)) {
+    if (typeof entry === 'boolean') {
+      result[key] = entry;
+    }
+  }
+  return result;
+}
+
+function normalizeOverrides(value: unknown): NormalizedFeatureOverrides {
+  if (!value || typeof value !== 'object' || Array.isArray(value)) {
+    return { global: {}, sets: {} };
+  }
+  const record = value as Record<string, unknown>;
+  const global = normalizeFeatureMap(record.global);
+  const sets: Record<string, Record<string, boolean>> = {};
+  const rawSets =
+    record.sets && typeof record.sets === 'object' && !Array.isArray(record.sets)
+      ? (record.sets as Record<string, unknown>)
+      : {};
+  for (const [setName, setValue] of Object.entries(rawSets)) {
+    const normalized = normalizeFeatureMap(setValue);
+    if (Object.keys(normalized).length > 0) {
+      sets[setName] = normalized;
+    }
+  }
+  return { global, sets };
+}
+
+function mergeOverrides(
+  base: NormalizedFeatureOverrides,
+  next: NormalizedFeatureOverrides,
+): NormalizedFeatureOverrides {
+  const sets: Record<string, Record<string, boolean>> = { ...base.sets };
+  for (const [setName, overrides] of Object.entries(next.sets)) {
+    const existing = sets[setName];
+    sets[setName] = existing ? { ...existing, ...overrides } : { ...overrides };
+  }
+  return {
+    global: { ...base.global, ...next.global },
+    sets,
+  };
+}
+
+function toFeatureOverrides(overrides: NormalizedFeatureOverrides): FeatureOverrides {
+  const result: FeatureOverrides = {};
+  if (Object.keys(overrides.global).length > 0) {
+    result.global = overrides.global;
+  }
+  const setEntries = Object.entries(overrides.sets).filter(([, value]) => Object.keys(value).length > 0);
+  if (setEntries.length > 0) {
+    result.sets = Object.fromEntries(setEntries);
+  }
+  return result;
+}
+
+function resolveFeaturesCachePath(): string {
+  const override = process.env.BIRD_FEATURES_CACHE ?? process.env.BIRD_FEATURES_PATH;
+  if (override && override.trim().length > 0) {
+    return path.resolve(override.trim());
+  }
+  return path.join(homedir(), '.config', 'bird', DEFAULT_CACHE_FILENAME);
+}
+
+function readOverridesFromFile(cachePath: string): NormalizedFeatureOverrides | null {
+  if (!existsSync(cachePath)) {
+    return null;
+  }
+  try {
+    const raw = readFileSync(cachePath, 'utf8');
+    return normalizeOverrides(JSON.parse(raw));
+  } catch {
+    return null;
+  }
+}
+
+function readOverridesFromEnv(): NormalizedFeatureOverrides | null {
+  const raw = process.env.BIRD_FEATURES_JSON;
+  if (!raw || raw.trim().length === 0) {
+    return null;
+  }
+  try {
+    return normalizeOverrides(JSON.parse(raw));
+  } catch {
+    return null;
+  }
+}
+
+function writeOverridesToDisk(cachePath: string, overrides: NormalizedFeatureOverrides): Promise<void> {
+  const payload = toFeatureOverrides(overrides);
+  return mkdir(path.dirname(cachePath), { recursive: true }).then(() =>
+    writeFile(cachePath, `${JSON.stringify(payload, null, 2)}\n`, 'utf8'),
+  );
+}
+
+export function loadFeatureOverrides(): NormalizedFeatureOverrides {
+  if (cachedOverrides) {
+    return cachedOverrides;
+  }
+  const base = normalizeOverrides(defaultOverrides);
+  const fromFile = readOverridesFromFile(resolveFeaturesCachePath());
+  const fromEnv = readOverridesFromEnv();
+  let merged = base;
+  if (fromFile) {
+    merged = mergeOverrides(merged, fromFile);
+  }
+  if (fromEnv) {
+    merged = mergeOverrides(merged, fromEnv);
+  }
+  cachedOverrides = merged;
+  return merged;
+}
+
+export function getFeatureOverridesSnapshot(): FeatureOverridesSnapshot {
+  const overrides = toFeatureOverrides(loadFeatureOverrides());
+  return {
+    cachePath: resolveFeaturesCachePath(),
+    overrides,
+  };
+}
+
+export function applyFeatureOverrides(setName: string, base: Record<string, boolean>): Record<string, boolean> {
+  const overrides = loadFeatureOverrides();
+  const globalOverrides = overrides.global;
+  const setOverrides = overrides.sets[setName];
+  if (Object.keys(globalOverrides).length === 0 && (!setOverrides || Object.keys(setOverrides).length === 0)) {
+    return base;
+  }
+  if (setOverrides) {
+    return {
+      ...base,
+      ...globalOverrides,
+      ...setOverrides,
+    };
+  }
+
+  return {
+    ...base,
+    ...globalOverrides,
+  };
+}
+
+export async function refreshFeatureOverridesCache(): Promise<FeatureOverridesSnapshot> {
+  const cachePath = resolveFeaturesCachePath();
+  const base = normalizeOverrides(defaultOverrides);
+  const fromFile = readOverridesFromFile(cachePath);
+  const merged = mergeOverrides(base, fromFile ?? { global: {}, sets: {} });
+  await writeOverridesToDisk(cachePath, merged);
+  cachedOverrides = null;
+  return { cachePath, overrides: toFeatureOverrides(merged) };
+}
+
+export function clearFeatureOverridesCache(): void {
+  cachedOverrides = null;
+}

src/lib/runtime-query-ids.ts

@@ -3,9 +3,9 @@ import { homedir } from 'node:os';
 import path from 'node:path';
 
 const DEFAULT_CACHE_FILENAME = 'query-ids-cache.json';
-const DEFAULT_TTL_MS = 24 * 60 * 60 * 1000;
+const DEFAULT_TTL_MS: number = 24 * 60 * 60 * 1000;
 
-const DISCOVERY_PAGES = [
+const DISCOVERY_PAGES: string[] = [
   'https://x.com/?lang=en',
   'https://x.com/explore',
   'https://x.com/notifications',
@@ -13,6 +13,7 @@ const DISCOVERY_PAGES = [
 ];
 
 const BUNDLE_URL_REGEX = /https:\/\/abs\.twimg\.com\/responsive-web\/client-web(?:-legacy)?\/[A-Za-z0-9.-]+\.js/g;
+const QUERY_ID_REGEX = /^[a-zA-Z0-9_-]+$/;
 
 const OPERATION_PATTERNS = [
   {
@@ -67,6 +68,15 @@ export type RuntimeQueryIdsOptions = {
   fetchImpl?: typeof fetch;
 };
 
+export type RuntimeQueryIdStore = {
+  cachePath: string;
+  ttlMs: number;
+  getSnapshotInfo: () => Promise<RuntimeQueryIdSnapshotInfo | null>;
+  getQueryId: (operationName: string) => Promise<string | null>;
+  refresh: (operationNames: string[], opts?: { force?: boolean }) => Promise<RuntimeQueryIdSnapshotInfo | null>;
+  clearMemory: () => void;
+};
+
 async function fetchText(fetchImpl: typeof fetch, url: string): Promise<string> {
   const response = await fetchImpl(url, { headers: HEADERS });
   if (!response.ok) {
@@ -85,7 +95,9 @@ function resolveDefaultCachePath(): string {
 }
 
 function parseSnapshot(raw: unknown): RuntimeQueryIdSnapshot | null {
-  if (!raw || typeof raw !== 'object') return null;
+  if (!raw || typeof raw !== 'object') {
+    return null;
+  }
   const record = raw as Record<string, unknown>;
   const fetchedAt = typeof record.fetchedAt === 'string' ? record.fetchedAt : null;
   const ttlMs = typeof record.ttlMs === 'number' && Number.isFinite(record.ttlMs) ? record.ttlMs : null;
@@ -93,10 +105,14 @@ function parseSnapshot(raw: unknown): RuntimeQueryIdSnapshot | null {
   const discovery =
     record.discovery && typeof record.discovery === 'object' ? (record.discovery as Record<string, unknown>) : null;
 
-  if (!fetchedAt || !ttlMs || !ids || !discovery) return null;
+  if (!fetchedAt || !ttlMs || !ids || !discovery) {
+    return null;
+  }
   const pages = Array.isArray(discovery.pages) ? discovery.pages : null;
   const bundles = Array.isArray(discovery.bundles) ? discovery.bundles : null;
-  if (!pages || !bundles) return null;
+  if (!pages || !bundles) {
+    return null;
+  }
 
   const normalizedIds: Record<string, string> = {};
   for (const [key, value] of Object.entries(ids)) {
@@ -120,9 +136,7 @@ async function readSnapshotFromDisk(cachePath: string): Promise<RuntimeQueryIdSn
   try {
     const raw = await readFile(cachePath, 'utf8');
     return parseSnapshot(JSON.parse(raw));
-  } catch (error) {
-    const code = error && typeof error === 'object' ? String((error as { code?: unknown }).code ?? '') : '';
-    if (code !== 'ENOENT') return null;
+  } catch {
     return null;
   }
 }
@@ -161,15 +175,27 @@ function extractOperations(
     pattern.regex.lastIndex = 0;
     while (true) {
       const match = pattern.regex.exec(bundleContents);
-      if (match === null) break;
+      if (match === null) {
+        break;
+      }
       const operationName = match[pattern.operationGroup];
       const queryId = match[pattern.queryIdGroup];
-      if (!operationName || !queryId) continue;
-      if (!targets.has(operationName)) continue;
-      if (!/^[a-zA-Z0-9_-]+$/.test(queryId)) continue;
-      if (discovered.has(operationName)) continue;
+      if (!operationName || !queryId) {
+        continue;
+      }
+      if (!targets.has(operationName)) {
+        continue;
+      }
+      if (!QUERY_ID_REGEX.test(queryId)) {
+        continue;
+      }
+      if (discovered.has(operationName)) {
+        continue;
+      }
       discovered.set(operationName, { queryId, bundle: bundleLabel });
-      if (discovered.size === targets.size) return;
+      if (discovered.size === targets.size) {
+        return;
+      }
     }
   }
 }
@@ -186,7 +212,9 @@ async function fetchAndExtract(
     const chunk = bundleUrls.slice(i, i + CONCURRENCY);
     await Promise.all(
       chunk.map(async (url) => {
-        if (discovered.size === targets.size) return;
+        if (discovered.size === targets.size) {
+          return;
+        }
         const label = url.split('/').at(-1) ?? url;
         try {
           const js = await fetchText(fetchImpl, url);
@@ -196,13 +224,15 @@ async function fetchAndExtract(
         }
       }),
     );
-    if (discovered.size === targets.size) break;
+    if (discovered.size === targets.size) {
+      break;
+    }
   }
 
   return discovered;
 }
 
-export function createRuntimeQueryIdStore(options: RuntimeQueryIdsOptions = {}) {
+export function createRuntimeQueryIdStore(options: RuntimeQueryIdsOptions = {}): RuntimeQueryIdStore {
   const fetchImpl = options.fetchImpl ?? fetch;
   const ttlMs = options.ttlMs ?? DEFAULT_TTL_MS;
   const cachePath = options.cachePath ? path.resolve(options.cachePath) : resolveDefaultCachePath();
@@ -212,7 +242,9 @@ export function createRuntimeQueryIdStore(options: RuntimeQueryIdsOptions = {})
   let refreshInFlight: Promise<RuntimeQueryIdSnapshotInfo | null> | null = null;
 
   const loadSnapshot = async (): Promise<RuntimeQueryIdSnapshot | null> => {
-    if (memorySnapshot) return memorySnapshot;
+    if (memorySnapshot) {
+      return memorySnapshot;
+    }
     if (!loadOnce) {
       loadOnce = (async () => {
         const fromDisk = await readSnapshotFromDisk(cachePath);
@@ -225,7 +257,9 @@ export function createRuntimeQueryIdStore(options: RuntimeQueryIdsOptions = {})
 
   const getSnapshotInfo = async (): Promise<RuntimeQueryIdSnapshotInfo | null> => {
     const snapshot = await loadSnapshot();
-    if (!snapshot) return null;
+    if (!snapshot) {
+      return null;
+    }
     const fetchedAtMs = new Date(snapshot.fetchedAt).getTime();
     const ageMs = Number.isFinite(fetchedAtMs) ? Math.max(0, Date.now() - fetchedAtMs) : Number.POSITIVE_INFINITY;
     const effectiveTtl = Number.isFinite(snapshot.ttlMs) ? snapshot.ttlMs : ttlMs;
@@ -235,7 +269,9 @@ export function createRuntimeQueryIdStore(options: RuntimeQueryIdsOptions = {})
 
   const getQueryId = async (operationName: string): Promise<string | null> => {
     const info = await getSnapshotInfo();
-    if (!info) return null;
+    if (!info) {
+      return null;
+    }
     return info.snapshot.ids[operationName] ?? null;
   };
 
@@ -243,7 +279,9 @@ export function createRuntimeQueryIdStore(options: RuntimeQueryIdsOptions = {})
     operationNames: string[],
     opts: { force?: boolean } = {},
   ): Promise<RuntimeQueryIdSnapshotInfo | null> => {
-    if (refreshInFlight) return refreshInFlight;
+    if (refreshInFlight) {
+      return refreshInFlight;
+    }
 
     refreshInFlight = (async () => {
       const current = await getSnapshotInfo();

src/lib/twitter-client-base.ts

@@ -0,0 +1,146 @@
+import { randomBytes, randomUUID } from 'node:crypto';
+import { runtimeQueryIds } from './runtime-query-ids.js';
+import { type OperationName, QUERY_IDS, TARGET_QUERY_ID_OPERATIONS } from './twitter-client-constants.js';
+import type { CurrentUserResult, TwitterClientOptions } from './twitter-client-types.js';
+import { normalizeQuoteDepth } from './twitter-client-utils.js';
+
+// biome-ignore lint/suspicious/noExplicitAny: TS mixin base constructor requirement.
+export type Constructor<T = object> = new (...args: any[]) => T;
+// biome-ignore lint/suspicious/noExplicitAny: TS mixin base constructor requirement.
+export type AbstractConstructor<T = object> = abstract new (...args: any[]) => T;
+export type Mixin<TBase extends AbstractConstructor<TwitterClientBase>, TAdded> = abstract new (
+  ...args: ConstructorParameters<TBase>
+) => TwitterClientBase & TAdded;
+
+export abstract class TwitterClientBase {
+  protected authToken: string;
+  protected ct0: string;
+  protected cookieHeader: string;
+  protected userAgent: string;
+  protected timeoutMs?: number;
+  protected quoteDepth: number;
+  protected clientUuid: string;
+  protected clientDeviceId: string;
+  protected clientUserId?: string;
+
+  constructor(options: TwitterClientOptions) {
+    if (!options.cookies.authToken || !options.cookies.ct0) {
+      throw new Error('Both authToken and ct0 cookies are required');
+    }
+    this.authToken = options.cookies.authToken;
+    this.ct0 = options.cookies.ct0;
+    this.cookieHeader = options.cookies.cookieHeader || `auth_token=${this.authToken}; ct0=${this.ct0}`;
+    this.userAgent =
+      options.userAgent ||
+      'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36';
+    this.timeoutMs = options.timeoutMs;
+    this.quoteDepth = normalizeQuoteDepth(options.quoteDepth);
+    this.clientUuid = randomUUID();
+    this.clientDeviceId = randomUUID();
+  }
+
+  protected abstract getCurrentUser(): Promise<CurrentUserResult>;
+
+  protected async sleep(ms: number): Promise<void> {
+    await new Promise((resolve) => setTimeout(resolve, ms));
+  }
+
+  protected async getQueryId(operationName: OperationName): Promise<string> {
+    const cached = await runtimeQueryIds.getQueryId(operationName);
+    return cached ?? QUERY_IDS[operationName];
+  }
+
+  protected async refreshQueryIds(): Promise<void> {
+    if (process.env.NODE_ENV === 'test') {
+      return;
+    }
+    try {
+      await runtimeQueryIds.refresh(TARGET_QUERY_ID_OPERATIONS, { force: true });
+    } catch {
+      // ignore refresh failures; callers will fall back to baked-in IDs
+    }
+  }
+
+  protected async getTweetDetailQueryIds(): Promise<string[]> {
+    const primary = await this.getQueryId('TweetDetail');
+    return Array.from(new Set([primary, '97JF30KziU00483E_8elBA', 'aFvUsJm2c-oDkJV75blV6g']));
+  }
+
+  protected async getSearchTimelineQueryIds(): Promise<string[]> {
+    const primary = await this.getQueryId('SearchTimeline');
+    return Array.from(new Set([primary, 'M1jEez78PEfVfbQLvlWMvQ', '5h0kNbk3ii97rmfY6CdgAA', 'Tp1sewRU1AsZpBWhqCZicQ']));
+  }
+
+  protected async fetchWithTimeout(url: string, init: RequestInit): Promise<Response> {
+    if (!this.timeoutMs || this.timeoutMs <= 0) {
+      return fetch(url, init);
+    }
+
+    const controller = new AbortController();
+    const timeoutId = setTimeout(() => controller.abort(), this.timeoutMs);
+    try {
+      return await fetch(url, { ...init, signal: controller.signal });
+    } finally {
+      clearTimeout(timeoutId);
+    }
+  }
+
+  protected getHeaders(): Record<string, string> {
+    return this.getJsonHeaders();
+  }
+
+  protected createTransactionId(): string {
+    return randomBytes(16).toString('hex');
+  }
+
+  protected getBaseHeaders(): Record<string, string> {
+    const headers: Record<string, string> = {
+      accept: '*/*',
+      'accept-language': 'en-US,en;q=0.9',
+      authorization:
+        'Bearer AAAAAAAAAAAAAAAAAAAAANRILgAAAAAAnNwIzUejRCOuH5E6I8xnZz4puTs%3D1Zv7ttfk8LF81IUq16cHjhLTvJu4FA33AGWWjCpTnA',
+      'x-csrf-token': this.ct0,
+      'x-twitter-auth-type': 'OAuth2Session',
+      'x-twitter-active-user': 'yes',
+      'x-twitter-client-language': 'en',
+      'x-client-uuid': this.clientUuid,
+      'x-twitter-client-deviceid': this.clientDeviceId,
+      'x-client-transaction-id': this.createTransactionId(),
+      cookie: this.cookieHeader,
+      'user-agent': this.userAgent,
+      origin: 'https://x.com',
+      referer: 'https://x.com/',
+    };
+
+    if (this.clientUserId) {
+      headers['x-twitter-client-user-id'] = this.clientUserId;
+    }
+
+    return headers;
+  }
+
+  protected getJsonHeaders(): Record<string, string> {
+    return {
+      ...this.getBaseHeaders(),
+      'content-type': 'application/json',
+    };
+  }
+
+  protected getUploadHeaders(): Record<string, string> {
+    // Note: do not set content-type; URLSearchParams/FormData need to set it (incl boundary) themselves.
+    return this.getBaseHeaders();
+  }
+
+  protected async ensureClientUserId(): Promise<void> {
+    if (process.env.NODE_ENV === 'test') {
+      return;
+    }
+    if (this.clientUserId) {
+      return;
+    }
+    const result = await this.getCurrentUser();
+    if (result.success && result.user?.id) {
+      this.clientUserId = result.user.id;
+    }
+  }
+}

src/lib/twitter-client-bookmarks.ts

@@ -0,0 +1,80 @@
+import type { AbstractConstructor, Mixin, TwitterClientBase } from './twitter-client-base.js';
+import { TWITTER_API_BASE, TWITTER_GRAPHQL_POST_URL } from './twitter-client-constants.js';
+import type { BookmarkMutationResult } from './twitter-client-types.js';
+
+export interface TwitterClientBookmarkMethods {
+  unbookmark(tweetId: string): Promise<BookmarkMutationResult>;
+}
+
+export function withBookmarks<TBase extends AbstractConstructor<TwitterClientBase>>(
+  Base: TBase,
+): Mixin<TBase, TwitterClientBookmarkMethods> {
+  abstract class TwitterClientBookmarks extends Base {
+    // biome-ignore lint/complexity/noUselessConstructor lint/suspicious/noExplicitAny: TS mixin constructor requirement.
+    constructor(...args: any[]) {
+      super(...args);
+    }
+
+    async unbookmark(tweetId: string): Promise<BookmarkMutationResult> {
+      // TODO: verify if DeleteBookmark requires client user ID or additional payload fields; add ensureClientUserId() if needed (needs live API test).
+      const variables = { tweet_id: tweetId };
+      let queryId = await this.getQueryId('DeleteBookmark');
+      let urlWithOperation = `${TWITTER_API_BASE}/${queryId}/DeleteBookmark`;
+
+      const buildBody = () => JSON.stringify({ variables, queryId });
+      const buildHeaders = () => ({ ...this.getHeaders(), referer: `https://x.com/i/status/${tweetId}` });
+      let body = buildBody();
+
+      const parseResponse = async (response: Response): Promise<BookmarkMutationResult> => {
+        if (!response.ok) {
+          const text = await response.text();
+          return { success: false, error: `HTTP ${response.status}: ${text.slice(0, 200)}` };
+        }
+
+        const data = (await response.json()) as { errors?: Array<{ message: string }> };
+        if (data.errors && data.errors.length > 0) {
+          return { success: false, error: data.errors.map((e) => e.message).join(', ') };
+        }
+
+        return { success: true };
+      };
+
+      try {
+        let response = await this.fetchWithTimeout(urlWithOperation, {
+          method: 'POST',
+          headers: buildHeaders(),
+          body,
+        });
+
+        if (response.status === 404) {
+          await this.refreshQueryIds();
+          queryId = await this.getQueryId('DeleteBookmark');
+          urlWithOperation = `${TWITTER_API_BASE}/${queryId}/DeleteBookmark`;
+          body = buildBody();
+
+          response = await this.fetchWithTimeout(urlWithOperation, {
+            method: 'POST',
+            headers: buildHeaders(),
+            body,
+          });
+
+          if (response.status === 404) {
+            const retry = await this.fetchWithTimeout(TWITTER_GRAPHQL_POST_URL, {
+              method: 'POST',
+              headers: buildHeaders(),
+              body,
+            });
+
+            return parseResponse(retry);
+          }
+        }
+
+        return parseResponse(response);
+      } catch (error) {
+        return { success: false, error: error instanceof Error ? error.message : String(error) };
+      }
+    }
+  }
+
+  return TwitterClientBookmarks;
+}

src/lib/twitter-client-constants.ts

@@ -0,0 +1,49 @@
+// biome-ignore lint/correctness/useImportExtensions: JSON module import doesn't use .js extension.
+import queryIds from './query-ids.json' with { type: 'json' };
+
+export const TWITTER_API_BASE = 'https://x.com/i/api/graphql';
+export const TWITTER_GRAPHQL_POST_URL = 'https://x.com/i/api/graphql';
+export const TWITTER_UPLOAD_URL = 'https://upload.twitter.com/i/media/upload.json';
+export const TWITTER_MEDIA_METADATA_URL = 'https://x.com/i/api/1.1/media/metadata/create.json';
+export const TWITTER_STATUS_UPDATE_URL = 'https://x.com/i/api/1.1/statuses/update.json';
+export const SETTINGS_SCREEN_NAME_REGEX = /"screen_name":"([^"]+)"/;
+export const SETTINGS_USER_ID_REGEX = /"user_id"\s*:\s*"(\d+)"/;
+export const SETTINGS_NAME_REGEX = /"name":"([^"\\]*(?:\\.[^"\\]*)*)"/;
+
+// Query IDs rotate frequently; the values in query-ids.json are refreshed by
+// scripts/update-query-ids.ts. The fallback values keep the client usable if
+// the file is missing or incomplete.
+export const FALLBACK_QUERY_IDS = {
+  CreateTweet: 'TAJw1rBsjAtdNgTdlo2oeg',
+  CreateRetweet: 'ojPdsZsimiJrUGLR1sjUtA',
+  FavoriteTweet: 'lI07N6Otwv1PhnEgXILM7A',
+  DeleteBookmark: 'Wlmlj2-xzyS1GN3a6cj-mQ',
+  TweetDetail: '97JF30KziU00483E_8elBA',
+  SearchTimeline: 'M1jEez78PEfVfbQLvlWMvQ',
+  UserArticlesTweets: '8zBy9h4L90aDL02RsBcCFg',
+  UserTweets: 'Wms1GvIiHXAPBaCr9KblaA',
+  Bookmarks: 'RV1g3b8n_SGOHwkqKYSCFw',
+  Following: 'BEkNpEt5pNETESoqMsTEGA',
+  Followers: 'kuFUYP9eV1FPoEy4N-pi7w',
+  Likes: 'JR2gceKucIKcVNB_9JkhsA',
+  BookmarkFolderTimeline: 'KJIQpsvxrTfRIlbaRIySHQ',
+  ListOwnerships: 'wQcOSjSQ8NtgxIwvYl1lMg',
+  ListMemberships: 'BlEXXdARdSeL_0KyKHHvvg',
+  ListLatestTweetsTimeline: '2TemLyqrMpTeAmysdbnVqw',
+  ListByRestId: 'wXzyA5vM_aVkBL9G8Vp3kw',
+  HomeTimeline: 'edseUwk9sP5Phz__9TIRnA',
+  HomeLatestTimeline: 'iOEZpOdfekFsxSlPQCQtPg',
+  ExploreSidebar: 'lpSN4M6qpimkF4nRFPE3nQ',
+  ExplorePage: 'kheAINB_4pzRDqkzG3K-ng',
+  GenericTimelineById: 'uGSr7alSjR9v6QJAIaqSKQ',
+  TrendHistory: 'Sj4T-jSB9pr0Mxtsc1UKZQ',
+} as const;
+
+export type OperationName = keyof typeof FALLBACK_QUERY_IDS;
+
+export const QUERY_IDS: Record<OperationName, string> = {
+  ...FALLBACK_QUERY_IDS,
+  ...(queryIds as Partial<Record<OperationName, string>>),
+};
+
+export const TARGET_QUERY_ID_OPERATIONS = Object.keys(FALLBACK_QUERY_IDS) as Array<OperationName>;

src/lib/twitter-client-features.ts

@@ -0,0 +1,359 @@
+import { applyFeatureOverrides } from './runtime-features.js';
+
+export function buildArticleFeatures(): Record<string, boolean> {
+  return applyFeatureOverrides('article', {
+    rweb_video_screen_enabled: true,
+    profile_label_improvements_pcf_label_in_post_enabled: true,
+    responsive_web_profile_redirect_enabled: true,
+    rweb_tipjar_consumption_enabled: true,
+    verified_phone_label_enabled: false,
+    creator_subscriptions_tweet_preview_api_enabled: true,
+    responsive_web_graphql_timeline_navigation_enabled: true,
+    responsive_web_graphql_exclude_directive_enabled: true,
+    responsive_web_graphql_skip_user_profile_image_extensions_enabled: false,
+    premium_content_api_read_enabled: false,
+    communities_web_enable_tweet_community_results_fetch: true,
+    c9s_tweet_anatomy_moderator_badge_enabled: true,
+    responsive_web_grok_analyze_button_fetch_trends_enabled: false,
+    responsive_web_grok_analyze_post_followups_enabled: false,
+    responsive_web_grok_annotations_enabled: false,
+    responsive_web_jetfuel_frame: true,
+    post_ctas_fetch_enabled: true,
+    responsive_web_grok_share_attachment_enabled: true,
+    articles_preview_enabled: true,
+    responsive_web_edit_tweet_api_enabled: true,
+    graphql_is_translatable_rweb_tweet_is_translatable_enabled: true,
+    view_counts_everywhere_api_enabled: true,
+    longform_notetweets_consumption_enabled: true,
+    responsive_web_twitter_article_tweet_consumption_enabled: true,
+    tweet_awards_web_tipping_enabled: false,
+    responsive_web_grok_show_grok_translated_post: false,
+    responsive_web_grok_analysis_button_from_backend: true,
+    creator_subscriptions_quote_tweet_preview_enabled: false,
+    freedom_of_speech_not_reach_fetch_enabled: true,
+    standardized_nudges_misinfo: true,
+    tweet_with_visibility_results_prefer_gql_limited_actions_policy_enabled: true,
+    longform_notetweets_rich_text_read_enabled: true,
+    longform_notetweets_inline_media_enabled: true,
+    responsive_web_grok_image_annotation_enabled: true,
+    responsive_web_grok_imagine_annotation_enabled: true,
+    responsive_web_grok_community_note_auto_translation_is_enabled: false,
+    responsive_web_enhance_cards_enabled: false,
+  });
+}
+
+export function buildTweetDetailFeatures(): Record<string, boolean> {
+  return applyFeatureOverrides('tweetDetail', {
+    ...buildArticleFeatures(),
+    responsive_web_graphql_exclude_directive_enabled: true,
+    communities_web_enable_tweet_community_results_fetch: true,
+    responsive_web_twitter_article_plain_text_enabled: true,
+    responsive_web_twitter_article_seed_tweet_detail_enabled: true,
+    responsive_web_twitter_article_seed_tweet_summary_enabled: true,
+    longform_notetweets_rich_text_read_enabled: true,
+    longform_notetweets_inline_media_enabled: true,
+    responsive_web_edit_tweet_api_enabled: true,
+    tweet_awards_web_tipping_enabled: false,
+    creator_subscriptions_quote_tweet_preview_enabled: false,
+    verified_phone_label_enabled: false,
+  });
+}
+
+export function buildArticleFieldToggles(): Record<string, boolean> {
+  return {
+    withPayments: false,
+    withAuxiliaryUserLabels: false,
+    withArticleRichContentState: true,
+    withArticlePlainText: true,
+    withGrokAnalyze: false,
+    withDisallowedReplyControls: false,
+  };
+}
+
+export function buildSearchFeatures(): Record<string, boolean> {
+  return applyFeatureOverrides('search', {
+    rweb_video_screen_enabled: true,
+    profile_label_improvements_pcf_label_in_post_enabled: true,
+    responsive_web_profile_redirect_enabled: true,
+    rweb_tipjar_consumption_enabled: true,
+    verified_phone_label_enabled: false,
+    creator_subscriptions_tweet_preview_api_enabled: true,
+    responsive_web_graphql_timeline_navigation_enabled: true,
+    responsive_web_graphql_exclude_directive_enabled: true,
+    responsive_web_graphql_skip_user_profile_image_extensions_enabled: false,
+    premium_content_api_read_enabled: false,
+    communities_web_enable_tweet_community_results_fetch: true,
+    c9s_tweet_anatomy_moderator_badge_enabled: true,
+    responsive_web_grok_analyze_button_fetch_trends_enabled: false,
+    responsive_web_grok_analyze_post_followups_enabled: false,
+    responsive_web_grok_annotations_enabled: false,
+    responsive_web_jetfuel_frame: true,
+    post_ctas_fetch_enabled: true,
+    responsive_web_grok_share_attachment_enabled: true,
+    responsive_web_edit_tweet_api_enabled: true,
+    graphql_is_translatable_rweb_tweet_is_translatable_enabled: true,
+    view_counts_everywhere_api_enabled: true,
+    longform_notetweets_consumption_enabled: true,
+    responsive_web_twitter_article_tweet_consumption_enabled: true,
+    tweet_awards_web_tipping_enabled: false,
+    responsive_web_grok_show_grok_translated_post: false,
+    responsive_web_grok_analysis_button_from_backend: true,
+    creator_subscriptions_quote_tweet_preview_enabled: false,
+    freedom_of_speech_not_reach_fetch_enabled: true,
+    standardized_nudges_misinfo: true,
+    tweet_with_visibility_results_prefer_gql_limited_actions_policy_enabled: true,
+    rweb_video_timestamps_enabled: true,
+    longform_notetweets_rich_text_read_enabled: true,
+    longform_notetweets_inline_media_enabled: true,
+    responsive_web_grok_image_annotation_enabled: true,
+    responsive_web_grok_imagine_annotation_enabled: true,
+    responsive_web_grok_community_note_auto_translation_is_enabled: false,
+    articles_preview_enabled: true,
+    responsive_web_enhance_cards_enabled: false,
+  });
+}
+
+export function buildTweetCreateFeatures(): Record<string, boolean> {
+  return applyFeatureOverrides('tweetCreate', {
+    rweb_video_screen_enabled: true,
+    creator_subscriptions_tweet_preview_api_enabled: true,
+    premium_content_api_read_enabled: false,
+    communities_web_enable_tweet_community_results_fetch: true,
+    c9s_tweet_anatomy_moderator_badge_enabled: true,
+    responsive_web_grok_analyze_button_fetch_trends_enabled: false,
+    responsive_web_grok_analyze_post_followups_enabled: false,
+    responsive_web_grok_annotations_enabled: false,
+    responsive_web_jetfuel_frame: true,
+    post_ctas_fetch_enabled: true,
+    responsive_web_grok_share_attachment_enabled: true,
+    responsive_web_edit_tweet_api_enabled: true,
+    graphql_is_translatable_rweb_tweet_is_translatable_enabled: true,
+    view_counts_everywhere_api_enabled: true,
+    longform_notetweets_consumption_enabled: true,
+    responsive_web_twitter_article_tweet_consumption_enabled: true,
+    tweet_awards_web_tipping_enabled: false,
+    responsive_web_grok_show_grok_translated_post: false,
+    responsive_web_grok_analysis_button_from_backend: true,
+    creator_subscriptions_quote_tweet_preview_enabled: false,
+    longform_notetweets_rich_text_read_enabled: true,
+    longform_notetweets_inline_media_enabled: true,
+    profile_label_improvements_pcf_label_in_post_enabled: true,
+    responsive_web_profile_redirect_enabled: false,
+    rweb_tipjar_consumption_enabled: true,
+    verified_phone_label_enabled: false,
+    articles_preview_enabled: true,
+    responsive_web_grok_community_note_auto_translation_is_enabled: false,
+    responsive_web_graphql_skip_user_profile_image_extensions_enabled: false,
+    freedom_of_speech_not_reach_fetch_enabled: true,
+    standardized_nudges_misinfo: true,
+    tweet_with_visibility_results_prefer_gql_limited_actions_policy_enabled: true,
+    responsive_web_grok_image_annotation_enabled: true,
+    responsive_web_grok_imagine_annotation_enabled: true,
+    responsive_web_graphql_timeline_navigation_enabled: true,
+    responsive_web_enhance_cards_enabled: false,
+  });
+}
+
+export function buildTimelineFeatures(): Record<string, boolean> {
+  return applyFeatureOverrides('timeline', {
+    ...buildSearchFeatures(),
+    blue_business_profile_image_shape_enabled: true,
+    responsive_web_text_conversations_enabled: false,
+    tweetypie_unmention_optimization_enabled: true,
+    vibe_api_enabled: true,
+    responsive_web_twitter_blue_verified_badge_is_enabled: true,
+    interactive_text_enabled: true,
+    longform_notetweets_richtext_consumption_enabled: true,
+    responsive_web_media_download_video_enabled: false,
+  });
+}
+
+export function buildBookmarksFeatures(): Record<string, boolean> {
+  return applyFeatureOverrides('bookmarks', {
+    ...buildTimelineFeatures(),
+    graphql_timeline_v2_bookmark_timeline: true,
+  });
+}
+
+export function buildLikesFeatures(): Record<string, boolean> {
+  return applyFeatureOverrides('likes', buildTimelineFeatures());
+}
+
+export function buildListsFeatures(): Record<string, boolean> {
+  return applyFeatureOverrides('lists', {
+    rweb_video_screen_enabled: true,
+    profile_label_improvements_pcf_label_in_post_enabled: true,
+    responsive_web_profile_redirect_enabled: true,
+    rweb_tipjar_consumption_enabled: true,
+    verified_phone_label_enabled: false,
+    creator_subscriptions_tweet_preview_api_enabled: true,
+    responsive_web_graphql_timeline_navigation_enabled: true,
+    responsive_web_graphql_exclude_directive_enabled: true,
+    responsive_web_graphql_skip_user_profile_image_extensions_enabled: false,
+    premium_content_api_read_enabled: false,
+    communities_web_enable_tweet_community_results_fetch: true,
+    c9s_tweet_anatomy_moderator_badge_enabled: true,
+    responsive_web_grok_analyze_button_fetch_trends_enabled: false,
+    responsive_web_grok_analyze_post_followups_enabled: false,
+    responsive_web_grok_annotations_enabled: false,
+    responsive_web_jetfuel_frame: true,
+    post_ctas_fetch_enabled: true,
+    responsive_web_grok_share_attachment_enabled: true,
+    articles_preview_enabled: true,
+    responsive_web_edit_tweet_api_enabled: true,
+    graphql_is_translatable_rweb_tweet_is_translatable_enabled: true,
+    view_counts_everywhere_api_enabled: true,
+    longform_notetweets_consumption_enabled: true,
+    responsive_web_twitter_article_tweet_consumption_enabled: true,
+    tweet_awards_web_tipping_enabled: false,
+    responsive_web_grok_show_grok_translated_post: false,
+    responsive_web_grok_analysis_button_from_backend: true,
+    creator_subscriptions_quote_tweet_preview_enabled: false,
+    freedom_of_speech_not_reach_fetch_enabled: true,
+    standardized_nudges_misinfo: true,
+    tweet_with_visibility_results_prefer_gql_limited_actions_policy_enabled: true,
+    longform_notetweets_rich_text_read_enabled: true,
+    longform_notetweets_inline_media_enabled: true,
+    responsive_web_grok_image_annotation_enabled: true,
+    responsive_web_grok_imagine_annotation_enabled: true,
+    responsive_web_grok_community_note_auto_translation_is_enabled: false,
+    responsive_web_enhance_cards_enabled: false,
+    blue_business_profile_image_shape_enabled: false,
+    responsive_web_text_conversations_enabled: false,
+    tweetypie_unmention_optimization_enabled: true,
+    vibe_api_enabled: false,
+    interactive_text_enabled: false,
+  });
+}
+
+export function buildHomeTimelineFeatures(): Record<string, boolean> {
+  return applyFeatureOverrides('homeTimeline', {
+    ...buildTimelineFeatures(),
+  });
+}
+
+export function buildUserTweetsFeatures(): Record<string, boolean> {
+  return applyFeatureOverrides('userTweets', {
+    rweb_video_screen_enabled: false,
+    profile_label_improvements_pcf_label_in_post_enabled: true,
+    responsive_web_profile_redirect_enabled: false,
+    rweb_tipjar_consumption_enabled: true,
+    verified_phone_label_enabled: false,
+    creator_subscriptions_tweet_preview_api_enabled: true,
+    responsive_web_graphql_timeline_navigation_enabled: true,
+    responsive_web_graphql_skip_user_profile_image_extensions_enabled: false,
+    premium_content_api_read_enabled: false,
+    communities_web_enable_tweet_community_results_fetch: true,
+    c9s_tweet_anatomy_moderator_badge_enabled: true,
+    responsive_web_grok_analyze_button_fetch_trends_enabled: false,
+    responsive_web_grok_analyze_post_followups_enabled: true,
+    responsive_web_jetfuel_frame: true,
+    post_ctas_fetch_enabled: true,
+    responsive_web_grok_share_attachment_enabled: true,
+    responsive_web_grok_annotations_enabled: false,
+    articles_preview_enabled: true,
+    responsive_web_edit_tweet_api_enabled: true,
+    graphql_is_translatable_rweb_tweet_is_translatable_enabled: true,
+    view_counts_everywhere_api_enabled: true,
+    longform_notetweets_consumption_enabled: true,
+    responsive_web_twitter_article_tweet_consumption_enabled: true,
+    tweet_awards_web_tipping_enabled: false,
+    responsive_web_grok_show_grok_translated_post: true,
+    responsive_web_grok_analysis_button_from_backend: true,
+    creator_subscriptions_quote_tweet_preview_enabled: false,
+    freedom_of_speech_not_reach_fetch_enabled: true,
+    standardized_nudges_misinfo: true,
+    tweet_with_visibility_results_prefer_gql_limited_actions_policy_enabled: true,
+    longform_notetweets_rich_text_read_enabled: true,
+    longform_notetweets_inline_media_enabled: true,
+    responsive_web_grok_image_annotation_enabled: true,
+    responsive_web_grok_imagine_annotation_enabled: true,
+    responsive_web_grok_community_note_auto_translation_is_enabled: false,
+    responsive_web_enhance_cards_enabled: false,
+  });
+}
+
+export function buildFollowingFeatures(): Record<string, boolean> {
+  return applyFeatureOverrides('following', {
+    rweb_video_screen_enabled: true,
+    profile_label_improvements_pcf_label_in_post_enabled: false,
+    responsive_web_profile_redirect_enabled: true,
+    rweb_tipjar_consumption_enabled: true,
+    verified_phone_label_enabled: false,
+    creator_subscriptions_tweet_preview_api_enabled: true,
+    responsive_web_graphql_timeline_navigation_enabled: true,
+    responsive_web_graphql_skip_user_profile_image_extensions_enabled: false,
+    premium_content_api_read_enabled: true,
+    communities_web_enable_tweet_community_results_fetch: true,
+    c9s_tweet_anatomy_moderator_badge_enabled: true,
+    responsive_web_grok_analyze_button_fetch_trends_enabled: false,
+    responsive_web_grok_analyze_post_followups_enabled: false,
+    responsive_web_grok_annotations_enabled: false,
+    responsive_web_jetfuel_frame: false,
+    post_ctas_fetch_enabled: true,
+    responsive_web_grok_share_attachment_enabled: false,
+    articles_preview_enabled: true,
+    responsive_web_edit_tweet_api_enabled: true,
+    graphql_is_translatable_rweb_tweet_is_translatable_enabled: true,
+    view_counts_everywhere_api_enabled: true,
+    longform_notetweets_consumption_enabled: true,
+    responsive_web_twitter_article_tweet_consumption_enabled: true,
+    tweet_awards_web_tipping_enabled: true,
+    responsive_web_grok_show_grok_translated_post: false,
+    responsive_web_grok_analysis_button_from_backend: false,
+    creator_subscriptions_quote_tweet_preview_enabled: false,
+    freedom_of_speech_not_reach_fetch_enabled: true,
+    standardized_nudges_misinfo: true,
+    tweet_with_visibility_results_prefer_gql_limited_actions_policy_enabled: true,
+    longform_notetweets_rich_text_read_enabled: true,
+    longform_notetweets_inline_media_enabled: true,
+    responsive_web_grok_image_annotation_enabled: false,
+    responsive_web_grok_imagine_annotation_enabled: false,
+    responsive_web_grok_community_note_auto_translation_is_enabled: false,
+    responsive_web_enhance_cards_enabled: false,
+  });
+}
+
+export function buildExploreFeatures(): Record<string, boolean> {
+  return applyFeatureOverrides('explore', {
+    rweb_video_screen_enabled: true,
+    profile_label_improvements_pcf_label_in_post_enabled: true,
+    responsive_web_profile_redirect_enabled: true,
+    rweb_tipjar_consumption_enabled: true,
+    verified_phone_label_enabled: false,
+    creator_subscriptions_tweet_preview_api_enabled: true,
+    responsive_web_graphql_timeline_navigation_enabled: true,
+    responsive_web_graphql_exclude_directive_enabled: true,
+    responsive_web_graphql_skip_user_profile_image_extensions_enabled: false,
+    premium_content_api_read_enabled: false,
+    communities_web_enable_tweet_community_results_fetch: true,
+    c9s_tweet_anatomy_moderator_badge_enabled: true,
+    responsive_web_grok_analyze_button_fetch_trends_enabled: true,
+    responsive_web_grok_analyze_post_followups_enabled: true,
+    responsive_web_grok_annotations_enabled: true,
+    responsive_web_jetfuel_frame: true,
+    responsive_web_grok_share_attachment_enabled: true,
+    articles_preview_enabled: true,
+    responsive_web_edit_tweet_api_enabled: true,
+    graphql_is_translatable_rweb_tweet_is_translatable_enabled: true,
+    view_counts_everywhere_api_enabled: true,
+    longform_notetweets_consumption_enabled: true,
+    responsive_web_twitter_article_tweet_consumption_enabled: true,
+    tweet_awards_web_tipping_enabled: false,
+    responsive_web_grok_show_grok_translated_post: true,
+    responsive_web_grok_analysis_button_from_backend: true,
+    creator_subscriptions_quote_tweet_preview_enabled: false,
+    freedom_of_speech_not_reach_fetch_enabled: true,
+    standardized_nudges_misinfo: true,
+    tweet_with_visibility_results_prefer_gql_limited_actions_policy_enabled: true,
+    longform_notetweets_rich_text_read_enabled: true,
+    longform_notetweets_inline_media_enabled: true,
+    responsive_web_grok_image_annotation_enabled: true,
+    responsive_web_grok_imagine_annotation_enabled: true,
+    responsive_web_grok_community_note_auto_translation_is_enabled: true,
+    responsive_web_enhance_cards_enabled: false,
+    // Additional features required for ExploreSidebar
+    post_ctas_fetch_enabled: true,
+    rweb_video_timestamps_enabled: true,
+  });
+}

src/lib/twitter-client-home.ts

@@ -0,0 +1,201 @@
+import type { AbstractConstructor, Mixin, TwitterClientBase } from './twitter-client-base.js';
+import { TWITTER_API_BASE } from './twitter-client-constants.js';
+import { buildHomeTimelineFeatures } from './twitter-client-features.js';
+import type { GraphqlTweetResult, SearchResult, TweetData } from './twitter-client-types.js';
+import { extractCursorFromInstructions, parseTweetsFromInstructions } from './twitter-client-utils.js';
+
+const QUERY_UNSPECIFIED_REGEX = /query:\s*unspecified/i;
+
+function isQueryIdMismatch(errors: Array<{ message?: string }>): boolean {
+  return errors.some((error) => QUERY_UNSPECIFIED_REGEX.test(error.message ?? ''));
+}
+
+/** Options for home timeline fetch methods */
+export interface HomeTimelineFetchOptions {
+  /** Include raw GraphQL response in `_raw` field */
+  includeRaw?: boolean;
+}
+
+export interface TwitterClientHomeMethods {
+  getHomeTimeline(count?: number, options?: HomeTimelineFetchOptions): Promise<SearchResult>;
+  getHomeLatestTimeline(count?: number, options?: HomeTimelineFetchOptions): Promise<SearchResult>;
+}
+
+export function withHome<TBase extends AbstractConstructor<TwitterClientBase>>(
+  Base: TBase,
+): Mixin<TBase, TwitterClientHomeMethods> {
+  abstract class TwitterClientHome extends Base {
+    // biome-ignore lint/complexity/noUselessConstructor lint/suspicious/noExplicitAny: TS mixin constructor requirement.
+    constructor(...args: any[]) {
+      super(...args);
+    }
+
+    private async getHomeTimelineQueryIds(): Promise<string[]> {
+      const primary = await this.getQueryId('HomeTimeline');
+      return Array.from(new Set([primary, 'edseUwk9sP5Phz__9TIRnA']));
+    }
+
+    private async getHomeLatestTimelineQueryIds(): Promise<string[]> {
+      const primary = await this.getQueryId('HomeLatestTimeline');
+      return Array.from(new Set([primary, 'iOEZpOdfekFsxSlPQCQtPg']));
+    }
+
+    /**
+     * Get the authenticated user's "For You" home timeline
+     */
+    async getHomeTimeline(count = 20, options: HomeTimelineFetchOptions = {}): Promise<SearchResult> {
+      return this.fetchHomeTimeline('HomeTimeline', count, options);
+    }
+
+    /**
+     * Get the authenticated user's "Following" (latest/chronological) home timeline
+     */
+    async getHomeLatestTimeline(count = 20, options: HomeTimelineFetchOptions = {}): Promise<SearchResult> {
+      return this.fetchHomeTimeline('HomeLatestTimeline', count, options);
+    }
+
+    private async fetchHomeTimeline(
+      operation: 'HomeTimeline' | 'HomeLatestTimeline',
+      count: number,
+      options: HomeTimelineFetchOptions,
+    ): Promise<SearchResult> {
+      const { includeRaw = false } = options;
+      const features = buildHomeTimelineFeatures();
+      const pageSize = 20;
+      const seen = new Set<string>();
+      const tweets: TweetData[] = [];
+      let cursor: string | undefined;
+
+      const fetchPage = async (pageCount: number, pageCursor?: string) => {
+        let lastError: string | undefined;
+        let had404 = false;
+        const queryIds =
+          operation === 'HomeTimeline'
+            ? await this.getHomeTimelineQueryIds()
+            : await this.getHomeLatestTimelineQueryIds();
+
+        for (const queryId of queryIds) {
+          const variables = {
+            count: pageCount,
+            includePromotedContent: true,
+            latestControlAvailable: true,
+            requestContext: 'launch',
+            withCommunity: true,
+            ...(pageCursor ? { cursor: pageCursor } : {}),
+          };
+
+          const params = new URLSearchParams({
+            variables: JSON.stringify(variables),
+            features: JSON.stringify(features),
+          });
+
+          const url = `${TWITTER_API_BASE}/${queryId}/${operation}?${params.toString()}`;
+
+          try {
+            const response = await this.fetchWithTimeout(url, {
+              method: 'GET',
+              headers: this.getHeaders(),
+            });
+
+            if (response.status === 404) {
+              had404 = true;
+              lastError = `HTTP ${response.status}`;
+              continue;
+            }
+
+            if (!response.ok) {
+              const text = await response.text();
+              return { success: false as const, error: `HTTP ${response.status}: ${text.slice(0, 200)}`, had404 };
+            }
+
+            const data = (await response.json()) as {
+              data?: {
+                home?: {
+                  home_timeline_urt?: {
+                    instructions?: Array<{
+                      entries?: Array<{
+                        content?: {
+                          itemContent?: {
+                            tweet_results?: {
+                              result?: GraphqlTweetResult;
+                            };
+                          };
+                        };
+                      }>;
+                    }>;
+                  };
+                };
+              };
+              errors?: Array<{ message: string }>;
+            };
+
+            if (data.errors && data.errors.length > 0) {
+              const errorMessage = data.errors.map((e) => e.message).join(', ');
+              return {
+                success: false as const,
+                error: errorMessage,
+                had404: had404 || isQueryIdMismatch(data.errors),
+              };
+            }
+
+            const instructions = data.data?.home?.home_timeline_urt?.instructions;
+            const pageTweets = parseTweetsFromInstructions(instructions, { quoteDepth: this.quoteDepth, includeRaw });
+            const nextCursor = extractCursorFromInstructions(instructions);
+
+            return { success: true as const, tweets: pageTweets, cursor: nextCursor, had404 };
+          } catch (error) {
+            lastError = error instanceof Error ? error.message : String(error);
+          }
+        }
+
+        return { success: false as const, error: lastError ?? 'Unknown error fetching home timeline', had404 };
+      };
+
+      const fetchWithRefresh = async (pageCount: number, pageCursor?: string) => {
+        const firstAttempt = await fetchPage(pageCount, pageCursor);
+        if (firstAttempt.success) {
+          return firstAttempt;
+        }
+        if (firstAttempt.had404) {
+          await this.refreshQueryIds();
+          const secondAttempt = await fetchPage(pageCount, pageCursor);
+          if (secondAttempt.success) {
+            return secondAttempt;
+          }
+          return { success: false as const, error: secondAttempt.error };
+        }
+        return { success: false as const, error: firstAttempt.error };
+      };
+
+      while (tweets.length < count) {
+        const pageCount = Math.min(pageSize, count - tweets.length);
+        const page = await fetchWithRefresh(pageCount, cursor);
+        if (!page.success) {
+          return { success: false, error: page.error };
+        }
+
+        let added = 0;
+        for (const tweet of page.tweets) {
+          if (seen.has(tweet.id)) {
+            continue;
+          }
+          seen.add(tweet.id);
+          tweets.push(tweet);
+          added += 1;
+          if (tweets.length >= count) {
+            break;
+          }
+        }
+
+        if (!page.cursor || page.cursor === cursor || page.tweets.length === 0 || added === 0) {
+          break;
+        }
+        cursor = page.cursor;
+      }
+
+      return { success: true, tweets };
+    }
+  }
+
+  return TwitterClientHome;
+}

src/lib/twitter-client-lists.ts

@@ -0,0 +1,492 @@
+// ABOUTME: Mixin for Twitter Lists GraphQL operations.
+// ABOUTME: Provides methods to fetch user's owned lists, memberships, and list timelines.
+
+import type { AbstractConstructor, Mixin, TwitterClientBase } from './twitter-client-base.js';
+import { TWITTER_API_BASE } from './twitter-client-constants.js';
+import { buildListsFeatures } from './twitter-client-features.js';
+import type { TimelineFetchOptions, TimelinePaginationOptions } from './twitter-client-timelines.js';
+import type { GraphqlTweetResult, ListsResult, SearchResult, TweetData, TwitterList } from './twitter-client-types.js';
+import { extractCursorFromInstructions, parseTweetsFromInstructions } from './twitter-client-utils.js';
+
+export interface TwitterClientListMethods {
+  getOwnedLists(count?: number): Promise<ListsResult>;
+  getListMemberships(count?: number): Promise<ListsResult>;
+  getListTimeline(listId: string, count?: number, options?: TimelineFetchOptions): Promise<SearchResult>;
+  getAllListTimeline(listId: string, options?: TimelinePaginationOptions): Promise<SearchResult>;
+}
+
+interface GraphqlListResult {
+  id_str?: string;
+  name?: string;
+  description?: string;
+  member_count?: number;
+  subscriber_count?: number;
+  mode?: string;
+  created_at?: string;
+  user_results?: {
+    result?: {
+      rest_id?: string;
+      legacy?: {
+        screen_name?: string;
+        name?: string;
+      };
+    };
+  };
+}
+
+function parseList(listResult: GraphqlListResult): TwitterList | null {
+  if (!listResult.id_str || !listResult.name) {
+    return null;
+  }
+
+  const owner = listResult.user_results?.result;
+  return {
+    id: listResult.id_str,
+    name: listResult.name,
+    description: listResult.description,
+    memberCount: listResult.member_count,
+    subscriberCount: listResult.subscriber_count,
+    isPrivate: listResult.mode?.toLowerCase() === 'private',
+    createdAt: listResult.created_at,
+    owner: owner
+      ? {
+          id: owner.rest_id ?? '',
+          username: owner.legacy?.screen_name ?? '',
+          name: owner.legacy?.name ?? '',
+        }
+      : undefined,
+  };
+}
+
+function parseListsFromInstructions(
+  instructions:
+    | Array<{
+        entries?: Array<{
+          content?: {
+            itemContent?: {
+              list?: GraphqlListResult;
+            };
+          };
+        }>;
+      }>
+    | undefined,
+): TwitterList[] {
+  const lists: TwitterList[] = [];
+  if (!instructions) {
+    return lists;
+  }
+
+  for (const instruction of instructions) {
+    if (!instruction.entries) {
+      continue;
+    }
+    for (const entry of instruction.entries) {
+      const listResult = entry.content?.itemContent?.list;
+      if (listResult) {
+        const parsed = parseList(listResult);
+        if (parsed) {
+          lists.push(parsed);
+        }
+      }
+    }
+  }
+
+  return lists;
+}
+
+export function withLists<TBase extends AbstractConstructor<TwitterClientBase>>(
+  Base: TBase,
+): Mixin<TBase, TwitterClientListMethods> {
+  abstract class TwitterClientLists extends Base {
+    // biome-ignore lint/complexity/noUselessConstructor lint/suspicious/noExplicitAny: TS mixin constructor requirement.
+    constructor(...args: any[]) {
+      super(...args);
+    }
+
+    private async getListOwnershipsQueryIds(): Promise<string[]> {
+      const primary = await this.getQueryId('ListOwnerships');
+      return Array.from(new Set([primary, 'wQcOSjSQ8NtgxIwvYl1lMg']));
+    }
+
+    private async getListMembershipsQueryIds(): Promise<string[]> {
+      const primary = await this.getQueryId('ListMemberships');
+      return Array.from(new Set([primary, 'BlEXXdARdSeL_0KyKHHvvg']));
+    }
+
+    private async getListTimelineQueryIds(): Promise<string[]> {
+      const primary = await this.getQueryId('ListLatestTweetsTimeline');
+      return Array.from(new Set([primary, '2TemLyqrMpTeAmysdbnVqw']));
+    }
+
+    /**
+     * Get lists owned by the authenticated user
+     */
+    async getOwnedLists(count = 100): Promise<ListsResult> {
+      const userResult = await this.getCurrentUser();
+      if (!userResult.success || !userResult.user) {
+        return { success: false, error: userResult.error ?? 'Could not determine current user' };
+      }
+
+      const variables = {
+        userId: userResult.user.id,
+        count,
+        isListMembershipShown: true,
+        isListMemberTargetUserId: userResult.user.id,
+      };
+
+      const features = buildListsFeatures();
+
+      const params = new URLSearchParams({
+        variables: JSON.stringify(variables),
+        features: JSON.stringify(features),
+      });
+
+      const tryOnce = async () => {
+        let lastError: string | undefined;
+        let had404 = false;
+        const queryIds = await this.getListOwnershipsQueryIds();
+
+        for (const queryId of queryIds) {
+          const url = `${TWITTER_API_BASE}/${queryId}/ListOwnerships?${params.toString()}`;
+
+          try {
+            const response = await this.fetchWithTimeout(url, {
+              method: 'GET',
+              headers: this.getHeaders(),
+            });
+
+            if (response.status === 404) {
+              had404 = true;
+              lastError = `HTTP ${response.status}`;
+              continue;
+            }
+
+            if (!response.ok) {
+              const text = await response.text();
+              return { success: false as const, error: `HTTP ${response.status}: ${text.slice(0, 200)}`, had404 };
+            }
+
+            const data = (await response.json()) as {
+              data?: {
+                user?: {
+                  result?: {
+                    timeline?: {
+                      timeline?: {
+                        instructions?: Array<{
+                          entries?: Array<{
+                            content?: {
+                              itemContent?: {
+                                list?: GraphqlListResult;
+                              };
+                            };
+                          }>;
+                        }>;
+                      };
+                    };
+                  };
+                };
+              };
+              errors?: Array<{ message: string }>;
+            };
+
+            if (data.errors && data.errors.length > 0) {
+              return { success: false as const, error: data.errors.map((e) => e.message).join(', '), had404 };
+            }
+
+            const instructions = data.data?.user?.result?.timeline?.timeline?.instructions;
+            const lists = parseListsFromInstructions(instructions);
+
+            return { success: true as const, lists, had404 };
+          } catch (error) {
+            lastError = error instanceof Error ? error.message : String(error);
+          }
+        }
+
+        return { success: false as const, error: lastError ?? 'Unknown error fetching owned lists', had404 };
+      };
+
+      const firstAttempt = await tryOnce();
+      if (firstAttempt.success) {
+        return { success: true, lists: firstAttempt.lists };
+      }
+
+      if (firstAttempt.had404) {
+        await this.refreshQueryIds();
+        const secondAttempt = await tryOnce();
+        if (secondAttempt.success) {
+          return { success: true, lists: secondAttempt.lists };
+        }
+        return { success: false, error: secondAttempt.error };
+      }
+
+      return { success: false, error: firstAttempt.error };
+    }
+
+    /**
+     * Get lists the authenticated user is a member of
+     */
+    async getListMemberships(count = 100): Promise<ListsResult> {
+      const userResult = await this.getCurrentUser();
+      if (!userResult.success || !userResult.user) {
+        return { success: false, error: userResult.error ?? 'Could not determine current user' };
+      }
+
+      const variables = {
+        userId: userResult.user.id,
+        count,
+        isListMembershipShown: true,
+        isListMemberTargetUserId: userResult.user.id,
+      };
+
+      const features = buildListsFeatures();
+
+      const params = new URLSearchParams({
+        variables: JSON.stringify(variables),
+        features: JSON.stringify(features),
+      });
+
+      const tryOnce = async () => {
+        let lastError: string | undefined;
+        let had404 = false;
+        const queryIds = await this.getListMembershipsQueryIds();
+
+        for (const queryId of queryIds) {
+          const url = `${TWITTER_API_BASE}/${queryId}/ListMemberships?${params.toString()}`;
+
+          try {
+            const response = await this.fetchWithTimeout(url, {
+              method: 'GET',
+              headers: this.getHeaders(),
+            });
+
+            if (response.status === 404) {
+              had404 = true;
+              lastError = `HTTP ${response.status}`;
+              continue;
+            }
+
+            if (!response.ok) {
+              const text = await response.text();
+              return { success: false as const, error: `HTTP ${response.status}: ${text.slice(0, 200)}`, had404 };
+            }
+
+            const data = (await response.json()) as {
+              data?: {
+                user?: {
+                  result?: {
+                    timeline?: {
+                      timeline?: {
+                        instructions?: Array<{
+                          entries?: Array<{
+                            content?: {
+                              itemContent?: {
+                                list?: GraphqlListResult;
+                              };
+                            };
+                          }>;
+                        }>;
+                      };
+                    };
+                  };
+                };
+              };
+              errors?: Array<{ message: string }>;
+            };
+
+            if (data.errors && data.errors.length > 0) {
+              return { success: false as const, error: data.errors.map((e) => e.message).join(', '), had404 };
+            }
+
+            const instructions = data.data?.user?.result?.timeline?.timeline?.instructions;
+            const lists = parseListsFromInstructions(instructions);
+
+            return { success: true as const, lists, had404 };
+          } catch (error) {
+            lastError = error instanceof Error ? error.message : String(error);
+          }
+        }
+
+        return { success: false as const, error: lastError ?? 'Unknown error fetching list memberships', had404 };
+      };
+
+      const firstAttempt = await tryOnce();
+      if (firstAttempt.success) {
+        return { success: true, lists: firstAttempt.lists };
+      }
+
+      if (firstAttempt.had404) {
+        await this.refreshQueryIds();
+        const secondAttempt = await tryOnce();
+        if (secondAttempt.success) {
+          return { success: true, lists: secondAttempt.lists };
+        }
+        return { success: false, error: secondAttempt.error };
+      }
+
+      return { success: false, error: firstAttempt.error };
+    }
+
+    /**
+     * Get tweets from a list timeline
+     */
+    async getListTimeline(listId: string, count = 20, options: TimelineFetchOptions = {}): Promise<SearchResult> {
+      return this.getListTimelinePaged(listId, count, options);
+    }
+
+    /**
+     * Get all tweets from a list timeline (paginated)
+     */
+    async getAllListTimeline(listId: string, options?: TimelinePaginationOptions): Promise<SearchResult> {
+      return this.getListTimelinePaged(listId, Number.POSITIVE_INFINITY, options);
+    }
+
+    /**
+     * Internal paginated list timeline fetcher
+     */
+    private async getListTimelinePaged(
+      listId: string,
+      limit: number,
+      options: TimelinePaginationOptions = {},
+    ): Promise<SearchResult> {
+      const features = buildListsFeatures();
+      const pageSize = 20;
+      const seen = new Set<string>();
+      const tweets: TweetData[] = [];
+      let cursor: string | undefined = options.cursor;
+      let nextCursor: string | undefined;
+      let pagesFetched = 0;
+      const { includeRaw = false, maxPages } = options;
+
+      const fetchPage = async (pageCount: number, pageCursor?: string) => {
+        let lastError: string | undefined;
+        let had404 = false;
+        const queryIds = await this.getListTimelineQueryIds();
+
+        const variables = {
+          listId,
+          count: pageCount,
+          ...(pageCursor ? { cursor: pageCursor } : {}),
+        };
+
+        const params = new URLSearchParams({
+          variables: JSON.stringify(variables),
+          features: JSON.stringify(features),
+        });
+
+        for (const queryId of queryIds) {
+          const url = `${TWITTER_API_BASE}/${queryId}/ListLatestTweetsTimeline?${params.toString()}`;
+
+          try {
+            const response = await this.fetchWithTimeout(url, {
+              method: 'GET',
+              headers: this.getHeaders(),
+            });
+
+            if (response.status === 404) {
+              had404 = true;
+              lastError = `HTTP ${response.status}`;
+              continue;
+            }
+
+            if (!response.ok) {
+              const text = await response.text();
+              return { success: false as const, error: `HTTP ${response.status}: ${text.slice(0, 200)}`, had404 };
+            }
+
+            const data = (await response.json()) as {
+              data?: {
+                list?: {
+                  tweets_timeline?: {
+                    timeline?: {
+                      instructions?: Array<{
+                        entries?: Array<{
+                          content?: {
+                            itemContent?: {
+                              tweet_results?: {
+                                result?: GraphqlTweetResult;
+                              };
+                            };
+                          };
+                        }>;
+                      }>;
+                    };
+                  };
+                };
+              };
+              errors?: Array<{ message: string }>;
+            };
+
+            if (data.errors && data.errors.length > 0) {
+              return { success: false as const, error: data.errors.map((e) => e.message).join(', '), had404 };
+            }
+
+            const instructions = data.data?.list?.tweets_timeline?.timeline?.instructions;
+            const pageTweets = parseTweetsFromInstructions(instructions, { quoteDepth: this.quoteDepth, includeRaw });
+            const nextCursor = extractCursorFromInstructions(instructions);
+
+            return { success: true as const, tweets: pageTweets, cursor: nextCursor, had404 };
+          } catch (error) {
+            lastError = error instanceof Error ? error.message : String(error);
+          }
+        }
+
+        return { success: false as const, error: lastError ?? 'Unknown error fetching list timeline', had404 };
+      };
+
+      const fetchWithRefresh = async (pageCount: number, pageCursor?: string) => {
+        const firstAttempt = await fetchPage(pageCount, pageCursor);
+        if (firstAttempt.success) {
+          return firstAttempt;
+        }
+        if (firstAttempt.had404) {
+          await this.refreshQueryIds();
+          const secondAttempt = await fetchPage(pageCount, pageCursor);
+          if (secondAttempt.success) {
+            return secondAttempt;
+          }
+          return { success: false as const, error: secondAttempt.error };
+        }
+        return { success: false as const, error: firstAttempt.error };
+      };
+
+      const unlimited = limit === Number.POSITIVE_INFINITY;
+      while (unlimited || tweets.length < limit) {
+        const pageCount = unlimited ? pageSize : Math.min(pageSize, limit - tweets.length);
+        const page = await fetchWithRefresh(pageCount, cursor);
+        if (!page.success) {
+          return { success: false, error: page.error };
+        }
+        pagesFetched += 1;
+
+        let added = 0;
+        for (const tweet of page.tweets) {
+          if (seen.has(tweet.id)) {
+            continue;
+          }
+          seen.add(tweet.id);
+          tweets.push(tweet);
+          added += 1;
+          if (!unlimited && tweets.length >= limit) {
+            break;
+          }
+        }
+
+        const pageCursor = page.cursor;
+        if (!pageCursor || pageCursor === cursor || page.tweets.length === 0 || added === 0) {
+          nextCursor = undefined;
+          break;
+        }
+        if (maxPages && pagesFetched >= maxPages) {
+          nextCursor = pageCursor;
+          break;
+        }
+        cursor = pageCursor;
+        nextCursor = pageCursor;
+      }
+
+      return { success: true, tweets, nextCursor };
+    }
+  }
+
+  return TwitterClientLists;
+}

src/lib/twitter-client-media.ts

@@ -0,0 +1,175 @@
+import type { AbstractConstructor, Mixin, TwitterClientBase } from './twitter-client-base.js';
+import { TWITTER_MEDIA_METADATA_URL, TWITTER_UPLOAD_URL } from './twitter-client-constants.js';
+import type { UploadMediaResult } from './twitter-client-types.js';
+
+export interface TwitterClientMediaMethods {
+  uploadMedia(input: { data: Uint8Array; mimeType: string; alt?: string }): Promise<UploadMediaResult>;
+}
+
+export function withMedia<TBase extends AbstractConstructor<TwitterClientBase>>(
+  Base: TBase,
+): Mixin<TBase, TwitterClientMediaMethods> {
+  abstract class TwitterClientMedia extends Base {
+    // biome-ignore lint/complexity/noUselessConstructor lint/suspicious/noExplicitAny: TS mixin constructor requirement.
+    constructor(...args: any[]) {
+      super(...args);
+    }
+
+    private mediaCategoryForMime(mimeType: string): string | null {
+      if (mimeType.startsWith('image/')) {
+        if (mimeType === 'image/gif') {
+          return 'tweet_gif';
+        }
+        return 'tweet_image';
+      }
+      if (mimeType.startsWith('video/')) {
+        return 'tweet_video';
+      }
+      return null;
+    }
+
+    async uploadMedia(input: { data: Uint8Array; mimeType: string; alt?: string }): Promise<UploadMediaResult> {
+      const category = this.mediaCategoryForMime(input.mimeType);
+      if (!category) {
+        return { success: false, error: `Unsupported media type: ${input.mimeType}` };
+      }
+
+      try {
+        const initParams = new URLSearchParams({
+          command: 'INIT',
+          total_bytes: String(input.data.byteLength),
+          media_type: input.mimeType,
+          media_category: category,
+        });
+
+        const initResp = await this.fetchWithTimeout(TWITTER_UPLOAD_URL, {
+          method: 'POST',
+          headers: this.getUploadHeaders(),
+          body: initParams,
+        });
+
+        if (!initResp.ok) {
+          const text = await initResp.text();
+          return { success: false, error: `HTTP ${initResp.status}: ${text.slice(0, 200)}` };
+        }
+
+        const initBody = (await initResp.json()) as { media_id_string?: string; media_id?: string | number };
+        const mediaId =
+          typeof initBody.media_id_string === 'string'
+            ? initBody.media_id_string
+            : initBody.media_id !== undefined
+              ? String(initBody.media_id)
+              : undefined;
+        if (!mediaId) {
+          return { success: false, error: 'Media upload INIT did not return media_id' };
+        }
+
+        const chunkSize = 5 * 1024 * 1024;
+        let segmentIndex = 0;
+        for (let offset = 0; offset < input.data.byteLength; offset += chunkSize) {
+          const chunk = input.data.slice(offset, Math.min(input.data.byteLength, offset + chunkSize));
+          const form = new FormData();
+          form.set('command', 'APPEND');
+          form.set('media_id', mediaId);
+          form.set('segment_index', String(segmentIndex));
+          form.set('media', new Blob([chunk], { type: input.mimeType }), 'media');
+
+          const appendResp = await this.fetchWithTimeout(TWITTER_UPLOAD_URL, {
+            method: 'POST',
+            headers: this.getUploadHeaders(),
+            body: form,
+          });
+
+          if (!appendResp.ok) {
+            const text = await appendResp.text();
+            return { success: false, error: `HTTP ${appendResp.status}: ${text.slice(0, 200)}` };
+          }
+          segmentIndex += 1;
+        }
+
+        const finalizeParams = new URLSearchParams({ command: 'FINALIZE', media_id: mediaId });
+        const finalizeResp = await this.fetchWithTimeout(TWITTER_UPLOAD_URL, {
+          method: 'POST',
+          headers: this.getUploadHeaders(),
+          body: finalizeParams,
+        });
+
+        if (!finalizeResp.ok) {
+          const text = await finalizeResp.text();
+          return { success: false, error: `HTTP ${finalizeResp.status}: ${text.slice(0, 200)}` };
+        }
+
+        const finalizeBody = (await finalizeResp.json()) as {
+          processing_info?: {
+            state?: string;
+            check_after_secs?: number;
+            error?: { message?: string; name?: string };
+          };
+        };
+
+        const info = finalizeBody.processing_info;
+        if (info?.state && info.state !== 'succeeded') {
+          let attempts = 0;
+          while (attempts < 20) {
+            if (info.state === 'failed') {
+              const msg = info.error?.message || info.error?.name || 'Media processing failed';
+              return { success: false, error: msg };
+            }
+            const delaySecs = Number.isFinite(info.check_after_secs) ? Math.max(1, info.check_after_secs as number) : 2;
+            await this.sleep(delaySecs * 1000);
+
+            const statusUrl = `${TWITTER_UPLOAD_URL}?${new URLSearchParams({
+              command: 'STATUS',
+              media_id: mediaId,
+            }).toString()}`;
+            const statusResp = await this.fetchWithTimeout(statusUrl, {
+              method: 'GET',
+              headers: this.getUploadHeaders(),
+            });
+
+            if (!statusResp.ok) {
+              const text = await statusResp.text();
+              return { success: false, error: `HTTP ${statusResp.status}: ${text.slice(0, 200)}` };
+            }
+
+            const statusBody = (await statusResp.json()) as {
+              processing_info?: {
+                state?: string;
+                check_after_secs?: number;
+                error?: { message?: string; name?: string };
+              };
+            };
+            if (!statusBody.processing_info) {
+              break;
+            }
+            info.state = statusBody.processing_info.state;
+            info.check_after_secs = statusBody.processing_info.check_after_secs;
+            info.error = statusBody.processing_info.error;
+            if (info.state === 'succeeded') {
+              break;
+            }
+            attempts += 1;
+          }
+        }
+
+        if (input.alt && input.mimeType.startsWith('image/')) {
+          const metaResp = await this.fetchWithTimeout(TWITTER_MEDIA_METADATA_URL, {
+            method: 'POST',
+            headers: this.getJsonHeaders(),
+            body: JSON.stringify({ media_id: mediaId, alt_text: { text: input.alt } }),
+          });
+          if (!metaResp.ok) {
+            const text = await metaResp.text();
+            return { success: false, error: `HTTP ${metaResp.status}: ${text.slice(0, 200)}` };
+          }
+        }
+
+        return { success: true, mediaId };
+      } catch (error) {
+        return { success: false, error: error instanceof Error ? error.message : String(error) };
+      }
+    }
+  }
+
+  return TwitterClientMedia;
+}

src/lib/twitter-client-news.ts

@@ -0,0 +1,430 @@
+import type { AbstractConstructor, Mixin, TwitterClientBase } from './twitter-client-base.js';
+import { TWITTER_API_BASE } from './twitter-client-constants.js';
+import { buildExploreFeatures } from './twitter-client-features.js';
+import type { SearchResult, TweetData } from './twitter-client-types.js';
+
+const POST_COUNT_REGEX = /[\d.]+[KMB]?\s*posts?/i;
+const POST_COUNT_MATCH_REGEX = /([\d.]+)([KMB]?)\s*posts?/i;
+
+// Timeline IDs for different Explore tabs
+const TIMELINE_IDS = {
+  forYou: 'VGltZWxpbmU6DAC2CwABAAAAB2Zvcl95b3UAAA==',
+  trending: 'VGltZWxpbmU6DAC2CwABAAAACHRyZW5kaW5nAAA=',
+  news: 'VGltZWxpbmU6DAC2CwABAAAABG5ld3MAAA==',
+  sports: 'VGltZWxpbmU6DAC2CwABAAAABnNwb3J0cwAA',
+  entertainment: 'VGltZWxpbmU6DAC2CwABAAAADWVudGVydGFpbm1lbnQAAA==',
+} as const;
+
+export type ExploreTab = keyof typeof TIMELINE_IDS;
+
+/** Options for news fetch methods */
+export interface NewsFetchOptions {
+  /** Include raw GraphQL response in `_raw` field */
+  includeRaw?: boolean;
+  /** Also fetch related tweets for each news item */
+  withTweets?: boolean;
+  /** Number of tweets to fetch per news item (default: 5) */
+  tweetsPerItem?: number;
+  /** Filter to show only AI-curated news items */
+  aiOnly?: boolean;
+  /** Fetch from specific tabs only (default: all tabs) */
+  tabs?: ExploreTab[];
+}
+
+export interface NewsItem {
+  id: string;
+  headline: string;
+  category?: string;
+  timeAgo?: string;
+  postCount?: number;
+  description?: string;
+  url?: string;
+  tweets?: TweetData[];
+  // biome-ignore lint/suspicious/noExplicitAny: Raw API response can have any structure
+  _raw?: any;
+}
+
+export type NewsResult =
+  | {
+      success: true;
+      items: NewsItem[];
+    }
+  | {
+      success: false;
+      error: string;
+    };
+
+export interface TwitterClientNewsMethods {
+  getNews(count?: number, options?: NewsFetchOptions): Promise<NewsResult>;
+}
+
+export function withNews<TBase extends AbstractConstructor<TwitterClientBase>>(
+  Base: TBase,
+): Mixin<TBase, TwitterClientNewsMethods> {
+  abstract class TwitterClientNews extends Base {
+    // biome-ignore lint/complexity/noUselessConstructor lint/suspicious/noExplicitAny: TS mixin constructor requirement.
+    constructor(...args: any[]) {
+      super(...args);
+    }
+
+    /**
+     * Fetch news and trending topics from Twitter's Explore page tabs
+     */
+    async getNews(count = 10, options: NewsFetchOptions = {}): Promise<NewsResult> {
+      const {
+        includeRaw = false,
+        withTweets = false,
+        tweetsPerItem = 5,
+        aiOnly = false,
+        tabs = ['forYou', 'news', 'sports', 'entertainment'],
+      } = options;
+
+      const debug = process.env.BIRD_DEBUG === '1';
+
+      if (debug) {
+        console.error(`[getNews] Fetching from tabs: ${tabs.join(', ')}`);
+      }
+
+      const allItems: NewsItem[] = [];
+      const seenHeadlines = new Set<string>();
+
+      // Fetch from each tab
+      for (const tab of tabs) {
+        const timelineId = TIMELINE_IDS[tab];
+        if (!timelineId) {
+          continue;
+        }
+
+        try {
+          const tabItems = await this.fetchTimelineTab(tab, timelineId, count, aiOnly, includeRaw);
+
+          // Deduplicate across tabs
+          for (const item of tabItems) {
+            if (!seenHeadlines.has(item.headline)) {
+              seenHeadlines.add(item.headline);
+              allItems.push(item);
+            }
+          }
+
+          if (debug) {
+            console.error(`[getNews] Tab ${tab}: found ${tabItems.length} items, total unique: ${allItems.length}`);
+          }
+
+          // Stop early if we have enough
+          if (allItems.length >= count) {
+            break;
+          }
+        } catch (error) {
+          if (debug) {
+            console.error(`[getNews] Error fetching tab ${tab}:`, error);
+          }
+          // Continue with other tabs
+        }
+      }
+
+      if (allItems.length === 0) {
+        return { success: false, error: 'No news items found' };
+      }
+
+      // Limit to requested count
+      const items = allItems.slice(0, count);
+
+      if (withTweets) {
+        await this.enrichWithTweets(items, tweetsPerItem, includeRaw);
+      }
+
+      return { success: true, items };
+    }
+
+    /**
+     * Fetch a specific timeline tab using GenericTimelineById
+     */
+    private async fetchTimelineTab(
+      tabName: string,
+      timelineId: string,
+      maxCount: number,
+      aiOnly: boolean,
+      includeRaw: boolean,
+    ): Promise<NewsItem[]> {
+      const queryId = await this.getQueryId('GenericTimelineById');
+      const features = buildExploreFeatures();
+
+      const variables = {
+        timelineId: timelineId,
+        count: maxCount * 2, // Fetch more to account for filtering
+        includePromotedContent: false,
+      };
+
+      const params = new URLSearchParams({
+        variables: JSON.stringify(variables),
+        features: JSON.stringify(features),
+      });
+
+      const url = `${TWITTER_API_BASE}/${queryId}/GenericTimelineById?${params.toString()}`;
+
+      const response = await this.fetchWithTimeout(url, {
+        method: 'GET',
+        headers: this.getHeaders(),
+      });
+
+      if (!response.ok) {
+        const text = await response.text();
+        throw new Error(`HTTP ${response.status}: ${text.slice(0, 200)}`);
+      }
+
+      const data = (await response.json()) as {
+        // biome-ignore lint/suspicious/noExplicitAny: API response structure is complex
+        data?: any;
+        // biome-ignore lint/suspicious/noExplicitAny: API errors can have any structure
+        errors?: Array<{ message: string; code?: number; [key: string]: any }>;
+      };
+
+      // Debug: save response if BIRD_DEBUG_JSON is set
+      if (process.env.BIRD_DEBUG_JSON) {
+        const fs = await import('node:fs/promises');
+        const debugPath = process.env.BIRD_DEBUG_JSON.replace('.json', `-${tabName}.json`);
+        await fs.writeFile(debugPath, JSON.stringify(data, null, 2)).catch(() => {});
+      }
+
+      if (data.errors && data.errors.length > 0) {
+        throw new Error(data.errors.map((e) => e.message).join('; '));
+      }
+
+      // Parse timeline response
+      return this.parseTimelineTabItems(data, tabName, maxCount, aiOnly, includeRaw);
+    }
+
+    /**
+     * Parse items from a GenericTimelineById response
+     */
+    private parseTimelineTabItems(
+      // biome-ignore lint/suspicious/noExplicitAny: API response structure is complex
+      data: any,
+      source: string,
+      maxCount: number,
+      aiOnly: boolean,
+      includeRaw: boolean,
+    ): NewsItem[] {
+      const items: NewsItem[] = [];
+      const seenHeadlines = new Set<string>();
+
+      // Navigate to timeline instructions
+      const timeline = data?.data?.timeline?.timeline;
+      if (!timeline) {
+        return [];
+      }
+
+      const instructions = timeline.instructions || [];
+
+      for (const instruction of instructions) {
+        const entries = instruction.entries ?? (instruction.entry ? [instruction.entry] : []);
+        if (!entries || entries.length === 0) {
+          continue;
+        }
+
+        for (const entry of entries) {
+          if (items.length >= maxCount) {
+            break;
+          }
+
+          const content = entry.content;
+          if (!content) {
+            continue;
+          }
+
+          // Handle TimelineTimelineItem (single trend item)
+          if (content.itemContent) {
+            const newsItem = this.parseNewsItemFromContent(
+              content.itemContent,
+              entry.entryId,
+              source,
+              seenHeadlines,
+              aiOnly,
+              includeRaw,
+            );
+
+            if (newsItem) {
+              items.push(newsItem);
+            }
+          }
+
+          // Handle TimelineTimelineModule (multiple items)
+          const itemsArray = content?.items || [];
+
+          for (const data of itemsArray) {
+            if (items.length >= maxCount) {
+              break;
+            }
+
+            // Structure can be data.itemContent OR data.item.itemContent
+            const itemContent = data?.itemContent || data?.item?.itemContent;
+            if (!itemContent) {
+              continue;
+            }
+
+            const newsItem = this.parseNewsItemFromContent(
+              itemContent,
+              entry.entryId,
+              source,
+              seenHeadlines,
+              aiOnly,
+              includeRaw,
+            );
+
+            if (newsItem) {
+              items.push(newsItem);
+            }
+          }
+        }
+      }
+
+      return items;
+    }
+
+    private parseNewsItemFromContent(
+      // biome-ignore lint/suspicious/noExplicitAny: API response structure is complex
+      itemContent: any,
+      entryId: string,
+      source: string,
+      seenHeadlines: Set<string>,
+      aiOnly: boolean,
+      includeRaw: boolean,
+    ): NewsItem | null {
+      const headline = itemContent.name || itemContent.title;
+
+      if (!headline) {
+        return null;
+      }
+
+      const trendMetadata = itemContent?.trend_metadata;
+      const trendUrl = itemContent.trend_url?.url || trendMetadata?.url?.url;
+
+      // Detect AI news by characteristics:
+      // 1. Full sentence headlines (contains spaces and is longer)
+      // 2. Has social_context with "News" category
+      // 3. Or explicitly marked as is_ai_trend
+      const socialContext = itemContent?.social_context?.text || '';
+      const hasNewsCategory = socialContext.includes('News') || socialContext.includes('hours ago');
+      const isFullSentence = headline.split(' ').length >= 5; // AI news are full sentences
+      const isExplicitlyAiTrend = itemContent.is_ai_trend === true;
+
+      const isAiNews = isExplicitlyAiTrend || (isFullSentence && hasNewsCategory);
+
+      // Filter AI trends if aiOnly is enabled
+      if (aiOnly && !isAiNews) {
+        return null;
+      }
+
+      if (seenHeadlines.has(headline)) {
+        return null;
+      }
+
+      seenHeadlines.add(headline);
+
+      let postCount: number | undefined;
+      let timeAgo: string | undefined;
+      let category = 'Trending';
+
+      // Parse social context for metadata
+      const socialCtx = itemContent?.social_context;
+      if (socialCtx?.text) {
+        const socialContextText = socialCtx.text;
+        const parts = socialContextText.split('·').map((s: string) => s.trim());
+
+        for (const part of parts) {
+          if (part.includes('ago')) {
+            timeAgo = part;
+          } else if (part.match(POST_COUNT_REGEX)) {
+            const match = part.match(POST_COUNT_MATCH_REGEX);
+            if (match) {
+              let num = Number.parseFloat(match[1]);
+              const suffix = match[2]?.toUpperCase();
+
+              if (suffix === 'K') {
+                num *= 1000;
+              } else if (suffix === 'M') {
+                num *= 1_000_000;
+              } else if (suffix === 'B') {
+                num *= 1_000_000_000;
+              }
+
+              postCount = Math.round(num);
+            }
+          } else {
+            category = part;
+          }
+        }
+      }
+
+      // Parse trend metadata
+      if (trendMetadata?.meta_description) {
+        const metaDesc = trendMetadata.meta_description;
+        const postMatch = metaDesc.match(POST_COUNT_MATCH_REGEX);
+        if (postMatch) {
+          let num = Number.parseFloat(postMatch[1]);
+          const suffix = postMatch[2]?.toUpperCase();
+
+          if (suffix === 'K') {
+            num *= 1000;
+          } else if (suffix === 'M') {
+            num *= 1_000_000;
+          } else if (suffix === 'B') {
+            num *= 1_000_000_000;
+          }
+
+          postCount = Math.round(num);
+        }
+      }
+
+      if (trendMetadata?.domain_context && (category === 'Trending' || category === 'News')) {
+        category = trendMetadata.domain_context;
+      }
+
+      const item: NewsItem = {
+        id: trendUrl ?? (entryId ? `${entryId}-${headline}` : `${source}-${headline}`),
+        headline,
+        category: isAiNews ? `AI · ${category}` : category,
+        timeAgo,
+        postCount,
+        description: itemContent.description,
+        url: trendUrl,
+      };
+
+      if (includeRaw) {
+        item._raw = itemContent;
+      }
+
+      return item;
+    }
+
+    private async enrichWithTweets(items: NewsItem[], tweetsPerItem: number, includeRaw: boolean): Promise<void> {
+      const debug = process.env.BIRD_DEBUG === '1';
+
+      for (const item of items) {
+        try {
+          const searchQuery = item.headline;
+          if (!searchQuery) {
+            continue;
+          }
+
+          // Use the search method if available (requires search mixin)
+          if ('search' in this && typeof (this as { search?: unknown }).search === 'function') {
+            const result = (await (
+              this as { search: (q: string, c: number, o: { includeRaw: boolean }) => Promise<SearchResult> }
+            ).search(searchQuery, tweetsPerItem, { includeRaw })) as SearchResult;
+
+            if (result.success && result.tweets) {
+              item.tweets = result.tweets;
+            }
+          }
+        } catch {
+          if (debug) {
+            console.error('[getNews] Failed to enrich item with tweets:', item.headline);
+          }
+        }
+      }
+    }
+  }
+
+  return TwitterClientNews;
+}

src/lib/twitter-client-posting.ts

@@ -0,0 +1,287 @@
+import type { AbstractConstructor, Mixin, TwitterClientBase } from './twitter-client-base.js';
+import { TWITTER_API_BASE, TWITTER_GRAPHQL_POST_URL, TWITTER_STATUS_UPDATE_URL } from './twitter-client-constants.js';
+import { buildTweetCreateFeatures } from './twitter-client-features.js';
+import type { CreateTweetResponse, TweetResult } from './twitter-client-types.js';
+
+export interface TwitterClientPostingMethods {
+  tweet(text: string, mediaIds?: string[]): Promise<TweetResult>;
+  reply(text: string, replyToTweetId: string, mediaIds?: string[]): Promise<TweetResult>;
+}
+
+export function withPosting<TBase extends AbstractConstructor<TwitterClientBase>>(
+  Base: TBase,
+): Mixin<TBase, TwitterClientPostingMethods> {
+  abstract class TwitterClientPosting extends Base {
+    // biome-ignore lint/complexity/noUselessConstructor lint/suspicious/noExplicitAny: TS mixin constructor requirement.
+    constructor(...args: any[]) {
+      super(...args);
+    }
+
+    /**
+     * Post a new tweet
+     */
+    async tweet(text: string, mediaIds?: string[]): Promise<TweetResult> {
+      const variables = {
+        tweet_text: text,
+        dark_request: false,
+        media: {
+          media_entities: (mediaIds ?? []).map((id) => ({ media_id: id, tagged_users: [] })),
+          possibly_sensitive: false,
+        },
+        semantic_annotation_ids: [],
+      };
+
+      const features = buildTweetCreateFeatures();
+
+      return this.createTweet(variables, features);
+    }
+
+    /**
+     * Reply to an existing tweet
+     */
+    async reply(text: string, replyToTweetId: string, mediaIds?: string[]): Promise<TweetResult> {
+      const variables = {
+        tweet_text: text,
+        reply: {
+          in_reply_to_tweet_id: replyToTweetId,
+          exclude_reply_user_ids: [],
+        },
+        dark_request: false,
+        media: {
+          media_entities: (mediaIds ?? []).map((id) => ({ media_id: id, tagged_users: [] })),
+          possibly_sensitive: false,
+        },
+        semantic_annotation_ids: [],
+      };
+
+      const features = buildTweetCreateFeatures();
+
+      return this.createTweet(variables, features);
+    }
+
+    private async createTweet(
+      variables: Record<string, unknown>,
+      features: Record<string, boolean>,
+    ): Promise<TweetResult> {
+      await this.ensureClientUserId();
+      let queryId = await this.getQueryId('CreateTweet');
+      let urlWithOperation = `${TWITTER_API_BASE}/${queryId}/CreateTweet`;
+
+      const buildBody = () => JSON.stringify({ variables, features, queryId });
+      let body = buildBody();
+
+      try {
+        const headers = { ...this.getHeaders(), referer: 'https://x.com/compose/post' };
+        let response = await this.fetchWithTimeout(urlWithOperation, {
+          method: 'POST',
+          headers,
+          body,
+        });
+
+        // Twitter increasingly prefers POST to /i/api/graphql with queryId in the payload.
+        // If the operation URL 404s, retry the generic endpoint.
+        if (response.status === 404) {
+          await this.refreshQueryIds();
+          queryId = await this.getQueryId('CreateTweet');
+          urlWithOperation = `${TWITTER_API_BASE}/${queryId}/CreateTweet`;
+          body = buildBody();
+
+          response = await this.fetchWithTimeout(urlWithOperation, {
+            method: 'POST',
+            headers: { ...this.getHeaders(), referer: 'https://x.com/compose/post' },
+            body,
+          });
+
+          if (response.status === 404) {
+            const retry = await this.fetchWithTimeout(TWITTER_GRAPHQL_POST_URL, {
+              method: 'POST',
+              headers: { ...this.getHeaders(), referer: 'https://x.com/compose/post' },
+              body,
+            });
+
+            if (!retry.ok) {
+              const text = await retry.text();
+              return { success: false, error: `HTTP ${retry.status}: ${text.slice(0, 200)}` };
+            }
+
+            const data = (await retry.json()) as CreateTweetResponse;
+
+            if (data.errors && data.errors.length > 0) {
+              const fallback = await this.tryStatusUpdateFallback(data.errors, variables);
+              if (fallback) {
+                return fallback;
+              }
+              return { success: false, error: this.formatErrors(data.errors) };
+            }
+
+            const tweetId = data.data?.create_tweet?.tweet_results?.result?.rest_id;
+            if (tweetId) {
+              return { success: true, tweetId };
+            }
+
+            return { success: false, error: 'Tweet created but no ID returned' };
+          }
+        }
+
+        if (!response.ok) {
+          const text = await response.text();
+          return {
+            success: false,
+            error: `HTTP ${response.status}: ${text.slice(0, 200)}`,
+          };
+        }
+
+        const data = (await response.json()) as CreateTweetResponse;
+
+        if (data.errors && data.errors.length > 0) {
+          const fallback = await this.tryStatusUpdateFallback(data.errors, variables);
+          if (fallback) {
+            return fallback;
+          }
+          return {
+            success: false,
+            error: this.formatErrors(data.errors),
+          };
+        }
+
+        const tweetId = data.data?.create_tweet?.tweet_results?.result?.rest_id;
+        if (tweetId) {
+          return {
+            success: true,
+            tweetId,
+          };
+        }
+
+        return {
+          success: false,
+          error: 'Tweet created but no ID returned',
+        };
+      } catch (error) {
+        return {
+          success: false,
+          error: error instanceof Error ? error.message : String(error),
+        };
+      }
+    }
+
+    private formatErrors(errors: Array<{ message: string; code?: number }>): string {
+      return errors
+        .map((error) => (typeof error.code === 'number' ? `${error.message} (${error.code})` : error.message))
+        .join(', ');
+    }
+
+    private statusUpdateInputFromCreateTweetVariables(variables: Record<string, unknown>): {
+      text: string;
+      inReplyToTweetId?: string;
+      mediaIds?: string[];
+    } | null {
+      const text = typeof variables.tweet_text === 'string' ? variables.tweet_text : null;
+      if (!text) {
+        return null;
+      }
+
+      const reply = variables.reply;
+      const inReplyToTweetId =
+        reply &&
+        typeof reply === 'object' &&
+        typeof (reply as { in_reply_to_tweet_id?: unknown }).in_reply_to_tweet_id === 'string'
+          ? (reply as { in_reply_to_tweet_id: string }).in_reply_to_tweet_id
+          : undefined;
+
+      const media = variables.media;
+      const mediaEntities =
+        media && typeof media === 'object' ? (media as { media_entities?: unknown }).media_entities : undefined;
+
+      const mediaIds = Array.isArray(mediaEntities)
+        ? mediaEntities
+            .map((entity) =>
+              entity && typeof entity === 'object' && 'media_id' in (entity as Record<string, unknown>)
+                ? (entity as { media_id?: unknown }).media_id
+                : undefined,
+            )
+            .filter((value): value is string | number => typeof value === 'string' || typeof value === 'number')
+            .map((value) => String(value))
+        : undefined;
+
+      return { text, inReplyToTweetId, mediaIds: mediaIds && mediaIds.length > 0 ? mediaIds : undefined };
+    }
+
+    private async postStatusUpdate(input: {
+      text: string;
+      inReplyToTweetId?: string;
+      mediaIds?: string[];
+    }): Promise<TweetResult> {
+      const params = new URLSearchParams();
+      params.set('status', input.text);
+      if (input.inReplyToTweetId) {
+        params.set('in_reply_to_status_id', input.inReplyToTweetId);
+        params.set('auto_populate_reply_metadata', 'true');
+      }
+      if (input.mediaIds && input.mediaIds.length > 0) {
+        params.set('media_ids', input.mediaIds.join(','));
+      }
+
+      try {
+        const response = await this.fetchWithTimeout(TWITTER_STATUS_UPDATE_URL, {
+          method: 'POST',
+          headers: {
+            ...this.getBaseHeaders(),
+            'content-type': 'application/x-www-form-urlencoded',
+            referer: 'https://x.com/compose/post',
+          },
+          body: params.toString(),
+        });
+
+        if (!response.ok) {
+          const text = await response.text();
+          return { success: false, error: `HTTP ${response.status}: ${text.slice(0, 200)}` };
+        }
+
+        const data = (await response.json()) as {
+          id_str?: string;
+          id?: string | number;
+          errors?: Array<{ message: string; code?: number }>;
+        };
+
+        if (data.errors && data.errors.length > 0) {
+          return { success: false, error: this.formatErrors(data.errors) };
+        }
+
+        const tweetId =
+          typeof data.id_str === 'string' ? data.id_str : data.id !== undefined ? String(data.id) : undefined;
+
+        if (tweetId) {
+          return { success: true, tweetId };
+        }
+        return { success: false, error: 'Tweet created but no ID returned' };
+      } catch (error) {
+        return { success: false, error: error instanceof Error ? error.message : String(error) };
+      }
+    }
+
+    private async tryStatusUpdateFallback(
+      errors: Array<{ message: string; code?: number }>,
+      variables: Record<string, unknown>,
+    ): Promise<TweetResult | null> {
+      if (!errors.some((error) => error.code === 226)) {
+        return null;
+      }
+      const input = this.statusUpdateInputFromCreateTweetVariables(variables);
+      if (!input) {
+        return null;
+      }
+
+      const fallback = await this.postStatusUpdate(input);
+      if (fallback.success) {
+        return fallback;
+      }
+
+      return {
+        success: false,
+        error: `${this.formatErrors(errors)} | fallback: ${fallback.error ?? 'Unknown error'}`,
+      };
+    }
+  }
+
+  return TwitterClientPosting;
+}

src/lib/twitter-client-search.ts

@@ -0,0 +1,252 @@
+import type { AbstractConstructor, Mixin, TwitterClientBase } from './twitter-client-base.js';
+import { TWITTER_API_BASE } from './twitter-client-constants.js';
+import { buildSearchFeatures } from './twitter-client-features.js';
+import type { SearchResult, TweetData } from './twitter-client-types.js';
+import { extractCursorFromInstructions, parseTweetsFromInstructions } from './twitter-client-utils.js';
+
+const RAW_QUERY_MISSING_REGEX = /must be defined/i;
+
+/** Options for search methods */
+export interface SearchFetchOptions {
+  /** Include raw GraphQL response in `_raw` field */
+  includeRaw?: boolean;
+}
+
+/** Options for paged search methods */
+export interface SearchPaginationOptions extends SearchFetchOptions {
+  maxPages?: number;
+  /** Starting cursor for pagination (resume from previous fetch) */
+  cursor?: string;
+}
+
+export interface TwitterClientSearchMethods {
+  search(query: string, count?: number, options?: SearchFetchOptions): Promise<SearchResult>;
+  getAllSearchResults(query: string, options?: SearchPaginationOptions): Promise<SearchResult>;
+}
+
+function isQueryIdMismatch(payload: string): boolean {
+  try {
+    const parsed = JSON.parse(payload) as {
+      errors?: Array<{ message?: string; path?: string[]; extensions?: { code?: string } }>;
+    };
+    return (
+      parsed.errors?.some((error) => {
+        if (error?.extensions?.code === 'GRAPHQL_VALIDATION_FAILED') {
+          return true;
+        }
+        if (error?.path?.includes('rawQuery') && RAW_QUERY_MISSING_REGEX.test(error.message ?? '')) {
+          return true;
+        }
+        return false;
+      }) ?? false
+    );
+  } catch {
+    return false;
+  }
+}
+
+export function withSearch<TBase extends AbstractConstructor<TwitterClientBase>>(
+  Base: TBase,
+): Mixin<TBase, TwitterClientSearchMethods> {
+  abstract class TwitterClientSearch extends Base {
+    // biome-ignore lint/complexity/noUselessConstructor lint/suspicious/noExplicitAny: TS mixin constructor requirement.
+    constructor(...args: any[]) {
+      super(...args);
+    }
+
+    /**
+     * Search for tweets matching a query
+     */
+    async search(query: string, count = 20, options: SearchFetchOptions = {}): Promise<SearchResult> {
+      return this.searchPaged(query, count, options);
+    }
+
+    /**
+     * Get all search results (paged)
+     */
+    async getAllSearchResults(query: string, options?: SearchPaginationOptions): Promise<SearchResult> {
+      return this.searchPaged(query, Number.POSITIVE_INFINITY, options);
+    }
+
+    private async searchPaged(
+      query: string,
+      limit: number,
+      options: SearchPaginationOptions = {},
+    ): Promise<SearchResult> {
+      const features = buildSearchFeatures();
+      const pageSize = 20;
+      const seen = new Set<string>();
+      const tweets: TweetData[] = [];
+      let cursor: string | undefined = options.cursor;
+      let nextCursor: string | undefined;
+      let pagesFetched = 0;
+      const { includeRaw = false, maxPages } = options;
+
+      const fetchPage = async (pageCount: number, pageCursor?: string) => {
+        let lastError: string | undefined;
+        let had404 = false;
+        const queryIds = await this.getSearchTimelineQueryIds();
+
+        for (const queryId of queryIds) {
+          const variables = {
+            rawQuery: query,
+            count: pageCount,
+            querySource: 'typed_query',
+            product: 'Latest',
+            ...(pageCursor ? { cursor: pageCursor } : {}),
+          };
+
+          const params = new URLSearchParams({
+            variables: JSON.stringify(variables),
+          });
+
+          const url = `${TWITTER_API_BASE}/${queryId}/SearchTimeline?${params.toString()}`;
+
+          try {
+            const response = await this.fetchWithTimeout(url, {
+              method: 'POST',
+              headers: this.getHeaders(),
+              body: JSON.stringify({ features, queryId }),
+            });
+
+            if (response.status === 404) {
+              had404 = true;
+              lastError = `HTTP ${response.status}`;
+              continue;
+            }
+
+            if (!response.ok) {
+              const text = await response.text();
+              const shouldRefreshQueryIds =
+                (response.status === 400 || response.status === 422) && isQueryIdMismatch(text);
+              return {
+                success: false as const,
+                error: `HTTP ${response.status}: ${text.slice(0, 200)}`,
+                had404: had404 || shouldRefreshQueryIds,
+              };
+            }
+
+            const data = (await response.json()) as {
+              data?: {
+                search_by_raw_query?: {
+                  search_timeline?: {
+                    timeline?: {
+                      instructions?: Array<{
+                        entries?: Array<{
+                          content?: {
+                            itemContent?: {
+                              tweet_results?: {
+                                result?: {
+                                  rest_id?: string;
+                                  legacy?: {
+                                    full_text?: string;
+                                    created_at?: string;
+                                    reply_count?: number;
+                                    retweet_count?: number;
+                                    favorite_count?: number;
+                                    in_reply_to_status_id_str?: string;
+                                  };
+                                  core?: {
+                                    user_results?: {
+                                      result?: {
+                                        legacy?: {
+                                          screen_name?: string;
+                                          name?: string;
+                                        };
+                                      };
+                                    };
+                                  };
+                                };
+                              };
+                            };
+                          };
+                        }>;
+                      }>;
+                    };
+                  };
+                };
+              };
+              errors?: Array<{ message: string; extensions?: { code?: string } }>;
+            };
+
+            if (data.errors && data.errors.length > 0) {
+              const shouldRefreshQueryIds = data.errors.some(
+                (error) => error?.extensions?.code === 'GRAPHQL_VALIDATION_FAILED',
+              );
+              return {
+                success: false as const,
+                error: data.errors.map((e) => e.message).join(', '),
+                had404: had404 || shouldRefreshQueryIds,
+              };
+            }
+
+            const instructions = data.data?.search_by_raw_query?.search_timeline?.timeline?.instructions;
+            const pageTweets = parseTweetsFromInstructions(instructions, { quoteDepth: this.quoteDepth, includeRaw });
+            const nextCursor = extractCursorFromInstructions(instructions);
+
+            return { success: true as const, tweets: pageTweets, cursor: nextCursor, had404 };
+          } catch (error) {
+            lastError = error instanceof Error ? error.message : String(error);
+          }
+        }
+
+        return { success: false as const, error: lastError ?? 'Unknown error fetching search results', had404 };
+      };
+
+      const fetchWithRefresh = async (pageCount: number, pageCursor?: string) => {
+        const firstAttempt = await fetchPage(pageCount, pageCursor);
+        if (firstAttempt.success) {
+          return firstAttempt;
+        }
+        if (firstAttempt.had404) {
+          await this.refreshQueryIds();
+          const secondAttempt = await fetchPage(pageCount, pageCursor);
+          if (secondAttempt.success) {
+            return secondAttempt;
+          }
+          return { success: false as const, error: secondAttempt.error };
+        }
+        return { success: false as const, error: firstAttempt.error };
+      };
+
+      const unlimited = limit === Number.POSITIVE_INFINITY;
+      while (unlimited || tweets.length < limit) {
+        const pageCount = unlimited ? pageSize : Math.min(pageSize, limit - tweets.length);
+        const page = await fetchWithRefresh(pageCount, cursor);
+        if (!page.success) {
+          return { success: false, error: page.error };
+        }
+        pagesFetched += 1;
+
+        let added = 0;
+        for (const tweet of page.tweets) {
+          if (seen.has(tweet.id)) {
+            continue;
+          }
+          seen.add(tweet.id);
+          tweets.push(tweet);
+          added += 1;
+          if (!unlimited && tweets.length >= limit) {
+            break;
+          }
+        }
+
+        const pageCursor = page.cursor;
+        if (!pageCursor || pageCursor === cursor || page.tweets.length === 0 || added === 0) {
+          nextCursor = undefined;
+          break;
+        }
+        if (maxPages && pagesFetched >= maxPages) {
+          nextCursor = pageCursor;
+          break;
+        }
+        cursor = pageCursor;
+        nextCursor = pageCursor;
+      }
+
+      return { success: true, tweets, nextCursor };
+    }
+  }
+
+  return TwitterClientSearch;
+}

src/lib/twitter-client-timelines.ts

@@ -0,0 +1,635 @@
+import type { AbstractConstructor, Mixin, TwitterClientBase } from './twitter-client-base.js';
+import { TWITTER_API_BASE } from './twitter-client-constants.js';
+import { buildBookmarksFeatures, buildLikesFeatures } from './twitter-client-features.js';
+import type { GraphqlTweetResult, SearchResult, TweetData } from './twitter-client-types.js';
+import { extractCursorFromInstructions, parseTweetsFromInstructions } from './twitter-client-utils.js';
+
+/** Options for timeline fetch methods */
+export interface TimelineFetchOptions {
+  /** Include raw GraphQL response in `_raw` field */
+  includeRaw?: boolean;
+}
+
+/** Options for paged timeline fetch methods */
+export interface TimelinePaginationOptions extends TimelineFetchOptions {
+  maxPages?: number;
+  /** Starting cursor for pagination (resume from previous fetch) */
+  cursor?: string;
+}
+
+export interface TwitterClientTimelineMethods {
+  getBookmarks(count?: number, options?: TimelineFetchOptions): Promise<SearchResult>;
+  getAllBookmarks(options?: TimelinePaginationOptions): Promise<SearchResult>;
+  getLikes(count?: number, options?: TimelineFetchOptions): Promise<SearchResult>;
+  getAllLikes(options?: TimelinePaginationOptions): Promise<SearchResult>;
+  getBookmarkFolderTimeline(folderId: string, count?: number, options?: TimelineFetchOptions): Promise<SearchResult>;
+  getAllBookmarkFolderTimeline(folderId: string, options?: TimelinePaginationOptions): Promise<SearchResult>;
+}
+
+export function withTimelines<TBase extends AbstractConstructor<TwitterClientBase>>(
+  Base: TBase,
+): Mixin<TBase, TwitterClientTimelineMethods> {
+  abstract class TwitterClientTimelines extends Base {
+    // biome-ignore lint/complexity/noUselessConstructor lint/suspicious/noExplicitAny: TS mixin constructor requirement.
+    constructor(...args: any[]) {
+      super(...args);
+    }
+
+    private logBookmarksDebug(message: string, data?: Record<string, unknown>): void {
+      if (process.env.BIRD_DEBUG_BOOKMARKS !== '1') {
+        return;
+      }
+      if (data) {
+        console.error(`[bird][debug][bookmarks] ${message}`, JSON.stringify(data));
+      } else {
+        console.error(`[bird][debug][bookmarks] ${message}`);
+      }
+    }
+
+    private async getBookmarksQueryIds(): Promise<string[]> {
+      const primary = await this.getQueryId('Bookmarks');
+      return Array.from(new Set([primary, 'RV1g3b8n_SGOHwkqKYSCFw', 'tmd4ifV8RHltzn8ymGg1aw']));
+    }
+
+    private async getBookmarkFolderQueryIds(): Promise<string[]> {
+      const primary = await this.getQueryId('BookmarkFolderTimeline');
+      return Array.from(new Set([primary, 'KJIQpsvxrTfRIlbaRIySHQ']));
+    }
+
+    private async getLikesQueryIds(): Promise<string[]> {
+      const primary = await this.getQueryId('Likes');
+      return Array.from(new Set([primary, 'JR2gceKucIKcVNB_9JkhsA']));
+    }
+
+    /**
+     * Get the authenticated user's bookmarks
+     */
+    async getBookmarks(count = 20, options: TimelineFetchOptions = {}): Promise<SearchResult> {
+      return this.getBookmarksPaged(count, options);
+    }
+
+    async getAllBookmarks(options?: TimelinePaginationOptions): Promise<SearchResult> {
+      return this.getBookmarksPaged(Number.POSITIVE_INFINITY, options);
+    }
+
+    /**
+     * Get the authenticated user's liked tweets
+     */
+    async getLikes(count = 20, options: TimelineFetchOptions = {}): Promise<SearchResult> {
+      return this.getLikesPaged(count, options);
+    }
+
+    async getAllLikes(options?: TimelinePaginationOptions): Promise<SearchResult> {
+      return this.getLikesPaged(Number.POSITIVE_INFINITY, options);
+    }
+
+    private async getLikesPaged(limit: number, options: TimelinePaginationOptions = {}): Promise<SearchResult> {
+      const userResult = await this.getCurrentUser();
+      if (!userResult.success || !userResult.user) {
+        return { success: false, error: userResult.error ?? 'Could not determine current user' };
+      }
+      const userId = userResult.user.id;
+      const features = buildLikesFeatures();
+      const pageSize = 20;
+      const seen = new Set<string>();
+      const tweets: TweetData[] = [];
+      let cursor: string | undefined = options.cursor;
+      let nextCursor: string | undefined;
+      let pagesFetched = 0;
+      const { includeRaw = false, maxPages } = options;
+
+      const fetchPage = async (pageCount: number, pageCursor?: string) => {
+        let lastError: string | undefined;
+        let had404 = false;
+        const queryIds = await this.getLikesQueryIds();
+
+        for (const queryId of queryIds) {
+          const variables = {
+            userId,
+            count: pageCount,
+            includePromotedContent: false,
+            withClientEventToken: false,
+            withBirdwatchNotes: false,
+            withVoice: true,
+            ...(pageCursor ? { cursor: pageCursor } : {}),
+          };
+
+          const params = new URLSearchParams({
+            variables: JSON.stringify(variables),
+            features: JSON.stringify(features),
+          });
+          const url = `${TWITTER_API_BASE}/${queryId}/Likes?${params.toString()}`;
+
+          try {
+            const response = await this.fetchWithTimeout(url, {
+              method: 'GET',
+              headers: this.getHeaders(),
+            });
+
+            if (response.status === 404) {
+              had404 = true;
+              lastError = `HTTP ${response.status}`;
+              continue;
+            }
+
+            if (!response.ok) {
+              const text = await response.text();
+              return { success: false as const, error: `HTTP ${response.status}: ${text.slice(0, 200)}`, had404 };
+            }
+
+            const data = (await response.json()) as {
+              data?: {
+                user?: {
+                  result?: {
+                    timeline?: {
+                      timeline?: {
+                        instructions?: Array<{
+                          entries?: Array<{
+                            content?: {
+                              itemContent?: {
+                                tweet_results?: {
+                                  result?: GraphqlTweetResult;
+                                };
+                              };
+                            };
+                          }>;
+                        }>;
+                      };
+                    };
+                  };
+                };
+              };
+              errors?: Array<{ message: string }>;
+            };
+
+            const instructions = data.data?.user?.result?.timeline?.timeline?.instructions;
+            if (data.errors && data.errors.length > 0) {
+              const message = data.errors.map((e) => e.message).join(', ');
+              if (!instructions) {
+                if (message.includes('Query: Unspecified')) {
+                  lastError = message;
+                  continue;
+                }
+                return { success: false as const, error: message, had404 };
+              }
+            }
+            const pageTweets = parseTweetsFromInstructions(instructions, { quoteDepth: this.quoteDepth, includeRaw });
+            const extractedCursor = extractCursorFromInstructions(instructions);
+
+            return { success: true as const, tweets: pageTweets, cursor: extractedCursor, had404 };
+          } catch (error) {
+            lastError = error instanceof Error ? error.message : String(error);
+          }
+        }
+
+        return { success: false as const, error: lastError ?? 'Unknown error fetching likes', had404 };
+      };
+
+      const fetchWithRefresh = async (pageCount: number, pageCursor?: string) => {
+        const firstAttempt = await fetchPage(pageCount, pageCursor);
+        if (firstAttempt.success) {
+          return firstAttempt;
+        }
+        const shouldRefresh =
+          firstAttempt.had404 ||
+          (typeof firstAttempt.error === 'string' && firstAttempt.error.includes('Query: Unspecified'));
+        if (shouldRefresh) {
+          await this.refreshQueryIds();
+          const secondAttempt = await fetchPage(pageCount, pageCursor);
+          if (secondAttempt.success) {
+            return secondAttempt;
+          }
+          return { success: false as const, error: secondAttempt.error };
+        }
+        return { success: false as const, error: firstAttempt.error };
+      };
+
+      const unlimited = limit === Number.POSITIVE_INFINITY;
+      while (unlimited || tweets.length < limit) {
+        const pageCount = unlimited ? pageSize : Math.min(pageSize, limit - tweets.length);
+        const page = await fetchWithRefresh(pageCount, cursor);
+        if (!page.success) {
+          return { success: false, error: page.error };
+        }
+        pagesFetched += 1;
+
+        let added = 0;
+        for (const tweet of page.tweets) {
+          if (seen.has(tweet.id)) {
+            continue;
+          }
+          seen.add(tweet.id);
+          tweets.push(tweet);
+          added += 1;
+          if (!unlimited && tweets.length >= limit) {
+            break;
+          }
+        }
+
+        const pageCursor = page.cursor;
+        if (!pageCursor || pageCursor === cursor || page.tweets.length === 0 || added === 0) {
+          nextCursor = undefined;
+          break;
+        }
+        if (maxPages && pagesFetched >= maxPages) {
+          nextCursor = pageCursor;
+          break;
+        }
+        cursor = pageCursor;
+        nextCursor = pageCursor;
+      }
+
+      return { success: true, tweets, nextCursor };
+    }
+
+    /**
+     * Get the authenticated user's bookmark folder timeline
+     */
+    async getBookmarkFolderTimeline(
+      folderId: string,
+      count = 20,
+      options: TimelineFetchOptions = {},
+    ): Promise<SearchResult> {
+      return this.getBookmarkFolderTimelinePaged(folderId, count, options);
+    }
+
+    async getAllBookmarkFolderTimeline(folderId: string, options?: TimelinePaginationOptions): Promise<SearchResult> {
+      return this.getBookmarkFolderTimelinePaged(folderId, Number.POSITIVE_INFINITY, options);
+    }
+
+    private async getBookmarksPaged(limit: number, options: TimelinePaginationOptions = {}): Promise<SearchResult> {
+      const features = buildBookmarksFeatures();
+      const pageSize = 20;
+      const seen = new Set<string>();
+      const tweets: TweetData[] = [];
+      let cursor: string | undefined = options.cursor;
+      let nextCursor: string | undefined;
+      let pagesFetched = 0;
+      const { includeRaw = false, maxPages } = options;
+
+      const fetchPage = async (pageCount: number, pageCursor?: string) => {
+        let lastError: string | undefined;
+        let had404 = false;
+        const queryIds = await this.getBookmarksQueryIds();
+
+        const variables = {
+          count: pageCount,
+          includePromotedContent: false,
+          withDownvotePerspective: false,
+          withReactionsMetadata: false,
+          withReactionsPerspective: false,
+          ...(pageCursor ? { cursor: pageCursor } : {}),
+        };
+
+        const params = new URLSearchParams({
+          variables: JSON.stringify(variables),
+          features: JSON.stringify(features),
+        });
+
+        for (const queryId of queryIds) {
+          const url = `${TWITTER_API_BASE}/${queryId}/Bookmarks?${params.toString()}`;
+
+          try {
+            this.logBookmarksDebug('request bookmarks page', {
+              queryId,
+              pageCount,
+              hasCursor: Boolean(pageCursor),
+            });
+            const response = await this.fetchWithRetry(url, {
+              method: 'GET',
+              headers: this.getHeaders(),
+            });
+
+            if (response.status === 404) {
+              had404 = true;
+              lastError = `HTTP ${response.status}`;
+              this.logBookmarksDebug('bookmarks 404', { queryId });
+              continue;
+            }
+
+            if (!response.ok) {
+              const text = await response.text();
+              this.logBookmarksDebug('bookmarks non-200', {
+                queryId,
+                status: response.status,
+                body: text.slice(0, 200),
+              });
+              return { success: false as const, error: `HTTP ${response.status}: ${text.slice(0, 200)}`, had404 };
+            }
+
+            const data = (await response.json()) as {
+              data?: {
+                bookmark_timeline_v2?: {
+                  timeline?: {
+                    instructions?: Array<{
+                      entries?: Array<{
+                        content?: {
+                          itemContent?: {
+                            tweet_results?: {
+                              result?: GraphqlTweetResult;
+                            };
+                          };
+                        };
+                      }>;
+                    }>;
+                  };
+                };
+              };
+              errors?: Array<{ message: string }>;
+            };
+
+            const instructions = data.data?.bookmark_timeline_v2?.timeline?.instructions;
+            const pageTweets = parseTweetsFromInstructions(instructions, { quoteDepth: this.quoteDepth, includeRaw });
+            const nextCursor = extractCursorFromInstructions(instructions);
+
+            if (data.errors && data.errors.length > 0) {
+              this.logBookmarksDebug('bookmarks graphql errors (non-fatal)', { queryId, errors: data.errors });
+              if (!instructions) {
+                lastError = data.errors.map((e) => e.message).join(', ');
+                continue;
+              }
+            }
+
+            this.logBookmarksDebug('bookmarks page parsed', {
+              queryId,
+              tweets: pageTweets.length,
+              hasNextCursor: Boolean(nextCursor),
+            });
+
+            return { success: true as const, tweets: pageTweets, cursor: nextCursor, had404 };
+          } catch (error) {
+            lastError = error instanceof Error ? error.message : String(error);
+            this.logBookmarksDebug('bookmarks request error', { queryId, error: lastError });
+          }
+        }
+
+        return { success: false as const, error: lastError ?? 'Unknown error fetching bookmarks', had404 };
+      };
+
+      const fetchWithRefresh = async (pageCount: number, pageCursor?: string) => {
+        const firstAttempt = await fetchPage(pageCount, pageCursor);
+        if (firstAttempt.success) {
+          return firstAttempt;
+        }
+        if (firstAttempt.had404) {
+          await this.refreshQueryIds();
+          const secondAttempt = await fetchPage(pageCount, pageCursor);
+          if (secondAttempt.success) {
+            return secondAttempt;
+          }
+          return { success: false as const, error: secondAttempt.error };
+        }
+        return { success: false as const, error: firstAttempt.error };
+      };
+
+      const unlimited = limit === Number.POSITIVE_INFINITY;
+      while (unlimited || tweets.length < limit) {
+        const pageCount = unlimited ? pageSize : Math.min(pageSize, limit - tweets.length);
+        const page = await fetchWithRefresh(pageCount, cursor);
+        if (!page.success) {
+          return { success: false, error: page.error };
+        }
+        pagesFetched += 1;
+
+        let added = 0;
+        for (const tweet of page.tweets) {
+          if (seen.has(tweet.id)) {
+            continue;
+          }
+          seen.add(tweet.id);
+          tweets.push(tweet);
+          added += 1;
+          if (!unlimited && tweets.length >= limit) {
+            break;
+          }
+        }
+
+        const pageCursor = page.cursor;
+        if (!pageCursor || pageCursor === cursor || page.tweets.length === 0 || added === 0) {
+          nextCursor = undefined;
+          break;
+        }
+        if (maxPages && pagesFetched >= maxPages) {
+          nextCursor = pageCursor;
+          break;
+        }
+        cursor = pageCursor;
+        nextCursor = pageCursor;
+      }
+
+      return { success: true, tweets, nextCursor };
+    }
+
+    private async getBookmarkFolderTimelinePaged(
+      folderId: string,
+      limit: number,
+      options: TimelinePaginationOptions = {},
+    ): Promise<SearchResult> {
+      const features = buildBookmarksFeatures();
+      const pageSize = 20;
+      const seen = new Set<string>();
+      const tweets: TweetData[] = [];
+      let cursor: string | undefined = options.cursor;
+      let nextCursor: string | undefined;
+      let pagesFetched = 0;
+      const { includeRaw = false, maxPages } = options;
+
+      const buildVariables = (pageCount: number, pageCursor: string | undefined, includeCount: boolean) => ({
+        bookmark_collection_id: folderId,
+        includePromotedContent: true,
+        ...(includeCount ? { count: pageCount } : {}),
+        ...(pageCursor ? { cursor: pageCursor } : {}),
+      });
+
+      const fetchPage = async (pageCount: number, pageCursor?: string) => {
+        let lastError: string | undefined;
+        let had404 = false;
+        const queryIds = await this.getBookmarkFolderQueryIds();
+
+        const tryOnce = async (variables: Record<string, unknown>) => {
+          const params = new URLSearchParams({
+            variables: JSON.stringify(variables),
+            features: JSON.stringify(features),
+          });
+
+          for (const queryId of queryIds) {
+            const url = `${TWITTER_API_BASE}/${queryId}/BookmarkFolderTimeline?${params.toString()}`;
+
+            try {
+              this.logBookmarksDebug('request bookmark folder page', {
+                queryId,
+                pageCount,
+                hasCursor: Boolean(pageCursor),
+                includeCount: Object.hasOwn(variables, 'count'),
+              });
+              const response = await this.fetchWithRetry(url, {
+                method: 'GET',
+                headers: this.getHeaders(),
+              });
+
+              if (response.status === 404) {
+                had404 = true;
+                lastError = `HTTP ${response.status}`;
+                this.logBookmarksDebug('bookmark folder 404', { queryId });
+                continue;
+              }
+
+              if (!response.ok) {
+                const text = await response.text();
+                this.logBookmarksDebug('bookmark folder non-200', {
+                  queryId,
+                  status: response.status,
+                  body: text.slice(0, 200),
+                });
+                return { success: false as const, error: `HTTP ${response.status}: ${text.slice(0, 200)}`, had404 };
+              }
+
+              const data = (await response.json()) as {
+                data?: {
+                  bookmark_collection_timeline?: {
+                    timeline?: {
+                      instructions?: Array<{
+                        entries?: Array<{
+                          content?: {
+                            itemContent?: {
+                              tweet_results?: {
+                                result?: GraphqlTweetResult;
+                              };
+                            };
+                          };
+                        }>;
+                      }>;
+                    };
+                  };
+                };
+                errors?: Array<{ message: string }>;
+              };
+
+              const instructions = data.data?.bookmark_collection_timeline?.timeline?.instructions;
+              const pageTweets = parseTweetsFromInstructions(instructions, { quoteDepth: this.quoteDepth, includeRaw });
+              const nextCursor = extractCursorFromInstructions(instructions);
+
+              if (data.errors && data.errors.length > 0) {
+                this.logBookmarksDebug('bookmark folder graphql errors (non-fatal)', { queryId, errors: data.errors });
+                if (!instructions) {
+                  lastError = data.errors.map((e) => e.message).join(', ');
+                  continue;
+                }
+              }
+
+              this.logBookmarksDebug('bookmark folder page parsed', {
+                queryId,
+                tweets: pageTweets.length,
+                hasNextCursor: Boolean(nextCursor),
+              });
+
+              return { success: true as const, tweets: pageTweets, cursor: nextCursor, had404 };
+            } catch (error) {
+              lastError = error instanceof Error ? error.message : String(error);
+              this.logBookmarksDebug('bookmark folder request error', { queryId, error: lastError });
+            }
+          }
+
+          return { success: false as const, error: lastError ?? 'Unknown error fetching bookmark folder', had404 };
+        };
+
+        let attempt = await tryOnce(buildVariables(pageCount, pageCursor, true));
+        if (!attempt.success && attempt.error?.includes('Variable "$count"')) {
+          attempt = await tryOnce(buildVariables(pageCount, pageCursor, false));
+        }
+
+        if (!attempt.success && attempt.error?.includes('Variable "$cursor"') && pageCursor) {
+          return {
+            success: false as const,
+            error: 'Bookmark folder pagination rejected the cursor parameter',
+            had404: attempt.had404,
+          };
+        }
+
+        return attempt;
+      };
+
+      const fetchWithRefresh = async (pageCount: number, pageCursor?: string) => {
+        const firstAttempt = await fetchPage(pageCount, pageCursor);
+        if (firstAttempt.success) {
+          return firstAttempt;
+        }
+        if (firstAttempt.had404) {
+          await this.refreshQueryIds();
+          const secondAttempt = await fetchPage(pageCount, pageCursor);
+          if (secondAttempt.success) {
+            return secondAttempt;
+          }
+          return { success: false as const, error: secondAttempt.error };
+        }
+        return { success: false as const, error: firstAttempt.error };
+      };
+
+      const unlimited = limit === Number.POSITIVE_INFINITY;
+      while (unlimited || tweets.length < limit) {
+        const pageCount = unlimited ? pageSize : Math.min(pageSize, limit - tweets.length);
+        const page = await fetchWithRefresh(pageCount, cursor);
+        if (!page.success) {
+          return { success: false, error: page.error };
+        }
+        pagesFetched += 1;
+
+        let added = 0;
+        for (const tweet of page.tweets) {
+          if (seen.has(tweet.id)) {
+            continue;
+          }
+          seen.add(tweet.id);
+          tweets.push(tweet);
+          added += 1;
+          if (!unlimited && tweets.length >= limit) {
+            break;
+          }
+        }
+
+        const pageCursor = page.cursor;
+        if (!pageCursor || pageCursor === cursor || page.tweets.length === 0 || added === 0) {
+          nextCursor = undefined;
+          break;
+        }
+        if (maxPages && pagesFetched >= maxPages) {
+          nextCursor = pageCursor;
+          break;
+        }
+        cursor = pageCursor;
+        nextCursor = pageCursor;
+      }
+
+      return { success: true, tweets, nextCursor };
+    }
+
+    private async fetchWithRetry(url: string, init: RequestInit): Promise<Response> {
+      const maxRetries = 2;
+      const baseDelayMs = 500;
+      const retryable = new Set([429, 500, 502, 503, 504]);
+
+      for (let attempt = 0; attempt <= maxRetries; attempt += 1) {
+        const response = await this.fetchWithTimeout(url, init);
+        if (!retryable.has(response.status) || attempt === maxRetries) {
+          return response;
+        }
+        this.logBookmarksDebug('retrying bookmarks request', {
+          status: response.status,
+          attempt,
+        });
+
+        // Retry-After supports delta-seconds only; HTTP-date falls back to backoff.
+        const retryAfter = response.headers?.get?.('retry-after');
+        const retryAfterMs = retryAfter ? Number.parseInt(retryAfter, 10) * 1000 : Number.NaN;
+        const backoffMs = Number.isFinite(retryAfterMs)
+          ? retryAfterMs
+          : baseDelayMs * 2 ** attempt + Math.floor(Math.random() * baseDelayMs);
+        await new Promise((resolve) => setTimeout(resolve, backoffMs));
+      }
+
+      return this.fetchWithTimeout(url, init);
+    }
+  }
+
+  return TwitterClientTimelines;
+}

src/lib/twitter-client-tweet-detail.ts

@@ -0,0 +1,467 @@
+import { paginateCursor } from './paginate-cursor.js';
+import type { AbstractConstructor, Mixin, TwitterClientBase } from './twitter-client-base.js';
+import { TWITTER_API_BASE } from './twitter-client-constants.js';
+import { buildArticleFeatures, buildArticleFieldToggles, buildTweetDetailFeatures } from './twitter-client-features.js';
+import type { GetTweetResult, GraphqlTweetResult, SearchResult, TweetData } from './twitter-client-types.js';
+import {
+  extractArticleText,
+  extractCursorFromInstructions,
+  findTweetInInstructions,
+  firstText,
+  mapTweetResult,
+  parseTweetsFromInstructions,
+} from './twitter-client-utils.js';
+
+/** Options for tweet fetching methods */
+export interface TweetFetchOptions {
+  /** Include raw GraphQL response in `_raw` field */
+  includeRaw?: boolean;
+}
+
+/** Options for paginated tweet detail fetch */
+export interface TweetDetailPaginationOptions extends TweetFetchOptions {
+  /** Maximum number of pages to fetch (default: unlimited when using pagination) */
+  maxPages?: number;
+  /** Starting cursor for pagination (resume from previous fetch) */
+  cursor?: string;
+  /** Delay in milliseconds between page fetches (default: 1000) */
+  pageDelayMs?: number;
+}
+
+export interface TwitterClientTweetDetailMethods {
+  getTweet(tweetId: string, options?: TweetFetchOptions): Promise<GetTweetResult>;
+  getReplies(tweetId: string, options?: TweetFetchOptions): Promise<SearchResult>;
+  getThread(tweetId: string, options?: TweetFetchOptions): Promise<SearchResult>;
+  getRepliesPaged(tweetId: string, options?: TweetDetailPaginationOptions): Promise<SearchResult>;
+  getThreadPaged(tweetId: string, options?: TweetDetailPaginationOptions): Promise<SearchResult>;
+}
+
+export function withTweetDetails<TBase extends AbstractConstructor<TwitterClientBase>>(
+  Base: TBase,
+): Mixin<TBase, TwitterClientTweetDetailMethods> {
+  abstract class TwitterClientTweetDetails extends Base {
+    // biome-ignore lint/complexity/noUselessConstructor lint/suspicious/noExplicitAny: TS mixin constructor requirement.
+    constructor(...args: any[]) {
+      super(...args);
+    }
+
+    private async fetchUserArticlePlainText(
+      userId: string,
+      tweetId: string,
+    ): Promise<{ title?: string; plainText?: string }> {
+      const variables = {
+        userId,
+        count: 20,
+        includePromotedContent: true,
+        withVoice: true,
+        withQuickPromoteEligibilityTweetFields: true,
+        withBirdwatchNotes: true,
+        withCommunity: true,
+        withSafetyModeUserFields: true,
+        withSuperFollowsUserFields: true,
+        withDownvotePerspective: false,
+        withReactionsMetadata: false,
+        withReactionsPerspective: false,
+        withSuperFollowsTweetFields: true,
+        withSuperFollowsReplyCount: false,
+        withClientEventToken: false,
+      };
+
+      const params = new URLSearchParams({
+        variables: JSON.stringify(variables),
+        features: JSON.stringify(buildArticleFeatures()),
+        fieldToggles: JSON.stringify(buildArticleFieldToggles()),
+      });
+
+      const queryId = await this.getQueryId('UserArticlesTweets');
+      const url = `${TWITTER_API_BASE}/${queryId}/UserArticlesTweets?${params.toString()}`;
+
+      try {
+        const response = await this.fetchWithTimeout(url, { method: 'GET', headers: this.getHeaders() });
+        if (!response.ok) {
+          return {};
+        }
+
+        const data = (await response.json()) as {
+          data?: {
+            user?: {
+              result?: {
+                timeline?: {
+                  timeline?: {
+                    instructions?: Array<{
+                      entries?: Array<{
+                        content?: {
+                          itemContent?: {
+                            tweet_results?: { result?: GraphqlTweetResult };
+                          };
+                        };
+                      }>;
+                    }>;
+                  };
+                };
+              };
+            };
+          };
+        };
+
+        const instructions = data.data?.user?.result?.timeline?.timeline?.instructions ?? [];
+        for (const instruction of instructions) {
+          for (const entry of instruction.entries ?? []) {
+            const result = entry.content?.itemContent?.tweet_results?.result;
+            if (result?.rest_id !== tweetId) {
+              continue;
+            }
+            const articleResult = result.article?.article_results?.result;
+            const title = firstText(articleResult?.title, result.article?.title);
+            const plainText = firstText(articleResult?.plain_text, result.article?.plain_text);
+            return { title, plainText };
+          }
+        }
+      } catch {
+        return {};
+      }
+
+      return {};
+    }
+
+    private async fetchTweetDetail(
+      tweetId: string,
+      cursor?: string,
+    ): Promise<
+      | {
+          success: true;
+          data: {
+            tweetResult?: { result?: GraphqlTweetResult };
+            threaded_conversation_with_injections_v2?: {
+              instructions?: Array<{
+                entries?: Array<{
+                  content?: {
+                    itemContent?: {
+                      tweet_results?: {
+                        result?: GraphqlTweetResult;
+                      };
+                    };
+                  };
+                }>;
+              }>;
+            };
+          };
+        }
+      | { success: false; error: string }
+    > {
+      const variables = {
+        focalTweetId: tweetId,
+        with_rux_injections: false,
+        rankingMode: 'Relevance',
+        includePromotedContent: true,
+        withCommunity: true,
+        withQuickPromoteEligibilityTweetFields: true,
+        withBirdwatchNotes: true,
+        withVoice: true,
+        ...(cursor ? { cursor } : {}),
+      };
+
+      const features = {
+        ...buildTweetDetailFeatures(),
+        articles_preview_enabled: true,
+        articles_rest_api_enabled: true,
+        responsive_web_graphql_skip_user_profile_image_extensions_enabled: false,
+        creator_subscriptions_tweet_preview_api_enabled: true,
+        graphql_is_translatable_rweb_tweet_is_translatable_enabled: true,
+        view_counts_everywhere_api_enabled: true,
+        longform_notetweets_consumption_enabled: true,
+        responsive_web_twitter_article_tweet_consumption_enabled: true,
+        freedom_of_speech_not_reach_fetch_enabled: true,
+        standardized_nudges_misinfo: true,
+        tweet_with_visibility_results_prefer_gql_limited_actions_policy_enabled: true,
+        rweb_video_timestamps_enabled: true,
+      };
+
+      const fieldToggles = {
+        ...buildArticleFieldToggles(),
+        withArticleRichContentState: true,
+      };
+
+      const params = new URLSearchParams({
+        variables: JSON.stringify(variables),
+        features: JSON.stringify(features),
+        fieldToggles: JSON.stringify(fieldToggles),
+      });
+
+      try {
+        const parseResponse = async (response: Response) => {
+          if (!response.ok) {
+            const text = await response.text();
+            return { success: false as const, error: `HTTP ${response.status}: ${text.slice(0, 200)}` };
+          }
+
+          const data = (await response.json()) as {
+            data?: {
+              tweetResult?: { result?: GraphqlTweetResult };
+              threaded_conversation_with_injections_v2?: {
+                instructions?: Array<{
+                  entries?: Array<{
+                    content?: {
+                      itemContent?: {
+                        tweet_results?: {
+                          result?: GraphqlTweetResult;
+                        };
+                      };
+                    };
+                  }>;
+                }>;
+              };
+            };
+            errors?: Array<{ message: string; code?: number }>;
+          };
+
+          if (data.errors && data.errors.length > 0) {
+            // Twitter API sometimes returns partial errors (e.g., is_translatable failures)
+            // alongside valid tweet/thread data. Only fail if nothing useful is present.
+            const hasUsableData = Boolean(
+              data.data?.tweetResult?.result ||
+                data.data?.threaded_conversation_with_injections_v2?.instructions?.length,
+            );
+            if (!hasUsableData) {
+              return { success: false as const, error: data.errors.map((e) => e.message).join(', ') };
+            }
+          }
+
+          return { success: true as const, data: data.data ?? {} };
+        };
+
+        let lastError: string | undefined;
+        let had404 = false;
+
+        const tryOnce = async () => {
+          const queryIds = await this.getTweetDetailQueryIds();
+
+          for (const queryId of queryIds) {
+            const url = `${TWITTER_API_BASE}/${queryId}/TweetDetail?${params.toString()}`;
+            const response = await this.fetchWithTimeout(url, {
+              method: 'GET',
+              headers: this.getHeaders(),
+            });
+
+            if (response.status !== 404) {
+              return await parseResponse(response);
+            }
+
+            had404 = true;
+
+            const postResponse = await this.fetchWithTimeout(`${TWITTER_API_BASE}/${queryId}/TweetDetail`, {
+              method: 'POST',
+              headers: this.getHeaders(),
+              body: JSON.stringify({ variables, features, queryId }),
+            });
+
+            if (postResponse.status !== 404) {
+              return await parseResponse(postResponse);
+            }
+
+            lastError = 'HTTP 404';
+          }
+
+          return { success: false as const, error: lastError ?? 'Unknown error fetching tweet detail' };
+        };
+
+        const firstAttempt = await tryOnce();
+        if (firstAttempt.success) {
+          return firstAttempt;
+        }
+
+        if (had404) {
+          await this.refreshQueryIds();
+          return await tryOnce();
+        }
+
+        return firstAttempt;
+      } catch (error) {
+        return { success: false, error: error instanceof Error ? error.message : String(error) };
+      }
+    }
+
+    /**
+     * Get tweet details by ID
+     */
+    async getTweet(tweetId: string, options: TweetFetchOptions = {}): Promise<GetTweetResult> {
+      const { includeRaw = false } = options;
+      const response = await this.fetchTweetDetail(tweetId);
+      if (!response.success) {
+        return response;
+      }
+
+      const tweetResult =
+        (response.data.tweetResult as { result?: GraphqlTweetResult } | undefined)?.result ??
+        findTweetInInstructions(
+          response.data.threaded_conversation_with_injections_v2?.instructions as
+            | Array<{
+                entries?: Array<{
+                  content?: {
+                    itemContent?: {
+                      tweet_results?: {
+                        result?: GraphqlTweetResult;
+                      };
+                    };
+                  };
+                }>;
+              }>
+            | undefined,
+          tweetId,
+        );
+
+      const mapped = mapTweetResult(tweetResult, { quoteDepth: this.quoteDepth, includeRaw });
+      if (mapped) {
+        if (tweetResult?.article) {
+          const title = firstText(tweetResult.article.article_results?.result?.title, tweetResult.article.title);
+          const articleText = extractArticleText(tweetResult);
+          if (title && (!articleText || articleText.trim() === title.trim())) {
+            const userId = tweetResult.core?.user_results?.result?.rest_id;
+            if (userId) {
+              const fallback = await this.fetchUserArticlePlainText(userId, tweetId);
+              if (fallback.plainText) {
+                mapped.text = fallback.title ? `${fallback.title}\n\n${fallback.plainText}` : fallback.plainText;
+              }
+            }
+          }
+        }
+        return { success: true, tweet: mapped };
+      }
+      return { success: false, error: 'Tweet not found in response' };
+    }
+
+    /**
+     * Get replies to a tweet by ID
+     */
+    async getReplies(tweetId: string, options: TweetFetchOptions = {}): Promise<SearchResult> {
+      const { includeRaw = false } = options;
+      const response = await this.fetchTweetDetail(tweetId);
+      if (!response.success) {
+        return response;
+      }
+
+      const instructions = response.data.threaded_conversation_with_injections_v2?.instructions;
+      const tweets = parseTweetsFromInstructions(instructions, { quoteDepth: this.quoteDepth, includeRaw });
+      const replies = tweets.filter((tweet) => tweet.inReplyToStatusId === tweetId);
+
+      return { success: true, tweets: replies };
+    }
+
+    /**
+     * Get full conversation thread for a tweet ID
+     */
+    async getThread(tweetId: string, options: TweetFetchOptions = {}): Promise<SearchResult> {
+      const { includeRaw = false } = options;
+      const response = await this.fetchTweetDetail(tweetId);
+      if (!response.success) {
+        return response;
+      }
+
+      const instructions = response.data.threaded_conversation_with_injections_v2?.instructions;
+      const tweets = parseTweetsFromInstructions(instructions, { quoteDepth: this.quoteDepth, includeRaw });
+
+      const target = tweets.find((t) => t.id === tweetId);
+      const rootId = target?.conversationId || tweetId;
+      const thread = tweets.filter((tweet) => tweet.conversationId === rootId);
+
+      thread.sort((a, b) => {
+        const aTime = a.createdAt ? Date.parse(a.createdAt) : 0;
+        const bTime = b.createdAt ? Date.parse(b.createdAt) : 0;
+        return aTime - bTime;
+      });
+
+      return { success: true, tweets: thread };
+    }
+
+    /**
+     * Get replies to a tweet with pagination support
+     */
+    async getRepliesPaged(tweetId: string, options: TweetDetailPaginationOptions = {}): Promise<SearchResult> {
+      const { includeRaw = false, maxPages, pageDelayMs = 1000 } = options;
+
+      const result = await paginateCursor<TweetData>({
+        cursor: options.cursor,
+        maxPages,
+        pageDelayMs,
+        sleep: async (ms) => this.sleep(ms),
+        getKey: (tweet) => tweet.id,
+        fetchPage: async (cursor) => {
+          const response = await this.fetchTweetDetail(tweetId, cursor);
+          if (!response.success) {
+            return response;
+          }
+
+          const instructions = response.data.threaded_conversation_with_injections_v2?.instructions;
+          const tweets = parseTweetsFromInstructions(instructions, { quoteDepth: this.quoteDepth, includeRaw });
+          const replies = tweets.filter((tweet) => tweet.inReplyToStatusId === tweetId);
+          const pageCursor = extractCursorFromInstructions(instructions);
+
+          return { success: true as const, items: replies, cursor: pageCursor };
+        },
+      });
+
+      if (result.success) {
+        return { success: true, tweets: result.items, nextCursor: result.nextCursor };
+      }
+
+      if (result.items) {
+        return { success: false, tweets: result.items, nextCursor: result.nextCursor, error: result.error };
+      }
+
+      return { success: false, error: result.error };
+    }
+
+    /**
+     * Get full conversation thread with pagination support
+     */
+    async getThreadPaged(tweetId: string, options: TweetDetailPaginationOptions = {}): Promise<SearchResult> {
+      const { includeRaw = false, maxPages, pageDelayMs = 1000 } = options;
+      let rootId: string | undefined;
+
+      const result = await paginateCursor<TweetData>({
+        cursor: options.cursor,
+        maxPages,
+        pageDelayMs,
+        sleep: async (ms) => this.sleep(ms),
+        getKey: (tweet) => tweet.id,
+        fetchPage: async (cursor) => {
+          const response = await this.fetchTweetDetail(tweetId, cursor);
+          if (!response.success) {
+            return response;
+          }
+
+          const instructions = response.data.threaded_conversation_with_injections_v2?.instructions;
+          const tweets = parseTweetsFromInstructions(instructions, { quoteDepth: this.quoteDepth, includeRaw });
+
+          if (!rootId) {
+            const target = tweets.find((t) => t.id === tweetId);
+            rootId = target?.conversationId || tweetId;
+          }
+
+          const threadTweets = tweets.filter((tweet) => tweet.conversationId === rootId);
+          const pageCursor = extractCursorFromInstructions(instructions);
+
+          return { success: true as const, items: threadTweets, cursor: pageCursor };
+        },
+      });
+
+      const sortedTweets = (result.items ?? []).slice().sort((a, b) => {
+        const aTime = a.createdAt ? Date.parse(a.createdAt) : 0;
+        const bTime = b.createdAt ? Date.parse(b.createdAt) : 0;
+        return aTime - bTime;
+      });
+
+      if (result.success) {
+        return { success: true, tweets: sortedTweets, nextCursor: result.nextCursor };
+      }
+
+      if (result.items) {
+        return { success: false, tweets: sortedTweets, nextCursor: result.nextCursor, error: result.error };
+      }
+
+      return { success: false, error: result.error };
+    }
+  }
+
+  return TwitterClientTweetDetails;
+}

src/lib/twitter-client-types.ts

@@ -0,0 +1,372 @@
+import type { TwitterCookies } from './cookies.js';
+
+// Raw media entity from Twitter API
+export interface GraphqlMediaEntity {
+  id_str?: string;
+  media_url_https?: string;
+  type?: 'photo' | 'video' | 'animated_gif';
+  url?: string;
+  expanded_url?: string;
+  sizes?: {
+    thumb?: { w: number; h: number; resize: string };
+    small?: { w: number; h: number; resize: string };
+    medium?: { w: number; h: number; resize: string };
+    large?: { w: number; h: number; resize: string };
+  };
+  video_info?: {
+    duration_millis?: number;
+    variants?: Array<{
+      bitrate?: number;
+      content_type?: string;
+      url?: string;
+    }>;
+  };
+}
+
+export type GraphqlTweetResult = {
+  __typename?: string;
+  rest_id?: string;
+  legacy?: {
+    full_text?: string;
+    created_at?: string;
+    reply_count?: number;
+    retweet_count?: number;
+    favorite_count?: number;
+    conversation_id_str?: string;
+    in_reply_to_status_id_str?: string | null;
+    entities?: {
+      media?: GraphqlMediaEntity[];
+    };
+    extended_entities?: {
+      media?: GraphqlMediaEntity[];
+    };
+  };
+  core?: {
+    user_results?: {
+      result?: {
+        rest_id?: string;
+        id?: string;
+        legacy?: {
+          screen_name?: string;
+          name?: string;
+        };
+        core?: {
+          screen_name?: string;
+          name?: string;
+        };
+      };
+    };
+  };
+  note_tweet?: {
+    note_tweet_results?: {
+      result?: {
+        text?: string;
+        richtext?: {
+          text?: string;
+        };
+        rich_text?: {
+          text?: string;
+        };
+        content?: {
+          text?: string;
+          richtext?: {
+            text?: string;
+          };
+          rich_text?: {
+            text?: string;
+          };
+        };
+      };
+    };
+  };
+  article?: {
+    title?: string;
+    preview_text?: string;
+    article_results?: {
+      result?: {
+        title?: string;
+        preview_text?: string;
+        plain_text?: string;
+        text?: string;
+        richtext?: {
+          text?: string;
+        };
+        rich_text?: {
+          text?: string;
+        };
+        body?: {
+          text?: string;
+          richtext?: {
+            text?: string;
+          };
+          rich_text?: {
+            text?: string;
+          };
+        };
+        content?: {
+          text?: string;
+          richtext?: {
+            text?: string;
+          };
+          rich_text?: {
+            text?: string;
+          };
+          items?: Array<{
+            text?: string;
+            content?: {
+              text?: string;
+              richtext?: { text?: string };
+              rich_text?: { text?: string };
+            };
+          }>;
+        };
+        sections?: Array<{
+          items?: Array<{
+            text?: string;
+            content?: {
+              text?: string;
+              richtext?: { text?: string };
+              rich_text?: { text?: string };
+            };
+          }>;
+        }>;
+        /** Draft.js content state for rich article content */
+        content_state?: {
+          blocks: Array<{
+            key: string;
+            type: string;
+            text: string;
+            data?: Record<string, unknown>;
+            entityRanges?: Array<{ key: number; offset: number; length: number }>;
+            inlineStyleRanges?: Array<{ offset: number; length: number; style: string }>;
+          }>;
+          entityMap?:
+            | Array<{
+                key: string;
+                value: {
+                  type: string;
+                  mutability: string;
+                  data: Record<string, unknown>;
+                };
+              }>
+            | Record<
+                string,
+                {
+                  type: string;
+                  mutability: string;
+                  data: Record<string, unknown>;
+                }
+              >;
+        };
+      };
+    };
+    plain_text?: string;
+    text?: string;
+    richtext?: {
+      text?: string;
+    };
+    rich_text?: {
+      text?: string;
+    };
+    body?: {
+      text?: string;
+      richtext?: {
+        text?: string;
+      };
+      rich_text?: {
+        text?: string;
+      };
+    };
+    content?: {
+      text?: string;
+      richtext?: {
+        text?: string;
+      };
+      rich_text?: {
+        text?: string;
+      };
+      items?: Array<{
+        text?: string;
+        content?: {
+          text?: string;
+          richtext?: { text?: string };
+          rich_text?: { text?: string };
+        };
+      }>;
+    };
+    sections?: Array<{
+      items?: Array<{
+        text?: string;
+        content?: {
+          text?: string;
+          richtext?: { text?: string };
+          rich_text?: { text?: string };
+        };
+      }>;
+    }>;
+  };
+  tweet?: GraphqlTweetResult;
+  quoted_status_result?: {
+    result?: GraphqlTweetResult;
+  };
+};
+
+export type TweetResult =
+  | {
+      success: true;
+      tweetId: string;
+    }
+  | {
+      success: false;
+      error: string;
+    };
+
+export type BookmarkMutationResult =
+  | {
+      success: true;
+    }
+  | {
+      success: false;
+      error: string;
+    };
+
+export interface UploadMediaResult {
+  success: boolean;
+  mediaId?: string;
+  error?: string;
+}
+
+// Parsed media item for output
+export interface TweetMedia {
+  type: 'photo' | 'video' | 'animated_gif';
+  url: string;
+  previewUrl?: string;
+  width?: number;
+  height?: number;
+  // For video/animated_gif: best quality video URL
+  videoUrl?: string;
+  durationMs?: number;
+}
+
+export interface TweetData {
+  id: string;
+  text: string;
+  author: {
+    username: string;
+    name: string;
+  };
+  authorId?: string;
+  createdAt?: string;
+  replyCount?: number;
+  retweetCount?: number;
+  likeCount?: number;
+  conversationId?: string;
+  inReplyToStatusId?: string;
+  // Optional quoted tweet; depth controlled by quoteDepth (default: 1).
+  quotedTweet?: TweetData;
+  // Media attachments (photos, videos, GIFs)
+  media?: TweetMedia[];
+  // Article metadata (for Twitter Articles / long-form posts)
+  article?: {
+    title: string;
+    previewText?: string;
+  };
+  // Raw GraphQL tweet result (only when includeRaw is enabled)
+  _raw?: GraphqlTweetResult;
+}
+
+export interface GetTweetResult {
+  success: boolean;
+  tweet?: TweetData;
+  error?: string;
+}
+
+export type SearchResult =
+  | {
+      success: true;
+      tweets: TweetData[];
+      /** Cursor for fetching the next page of results */
+      nextCursor?: string;
+    }
+  | {
+      success: false;
+      error: string;
+      tweets?: TweetData[];
+      /** Cursor for fetching the next page of results */
+      nextCursor?: string;
+    };
+
+export interface CurrentUserResult {
+  success: boolean;
+  user?: {
+    id: string;
+    username: string;
+    name: string;
+  };
+  error?: string;
+}
+
+export interface TwitterUser {
+  id: string;
+  username: string;
+  name: string;
+  description?: string;
+  followersCount?: number;
+  followingCount?: number;
+  isBlueVerified?: boolean;
+  profileImageUrl?: string;
+  createdAt?: string;
+}
+
+export interface FollowingResult {
+  success: boolean;
+  users?: TwitterUser[];
+  error?: string;
+  /** Cursor for fetching the next page of results */
+  nextCursor?: string;
+}
+
+export interface TwitterClientOptions {
+  cookies: TwitterCookies;
+  userAgent?: string;
+  timeoutMs?: number;
+  // Max depth for quoted tweets (0 disables). Defaults to 1.
+  quoteDepth?: number;
+}
+
+export interface TwitterList {
+  id: string;
+  name: string;
+  description?: string;
+  memberCount?: number;
+  subscriberCount?: number;
+  isPrivate?: boolean;
+  createdAt?: string;
+  owner?: {
+    id: string;
+    username: string;
+    name: string;
+  };
+}
+
+export interface ListsResult {
+  success: boolean;
+  lists?: TwitterList[];
+  error?: string;
+}
+
+export interface CreateTweetResponse {
+  data?: {
+    create_tweet?: {
+      tweet_results?: {
+        result?: {
+          rest_id?: string;
+          legacy?: {
+            full_text?: string;
+          };
+        };
+      };
+    };
+  };
+  errors?: Array<{ message: string; code?: number }>;
+}

src/lib/twitter-client-user-lookup.ts

@@ -0,0 +1,211 @@
+import { normalizeHandle } from './normalize-handle.js';
+import type { AbstractConstructor, Mixin, TwitterClientBase } from './twitter-client-base.js';
+import { TWITTER_API_BASE } from './twitter-client-constants.js';
+
+/** Result of username to userId lookup */
+export interface UserLookupResult {
+  success: boolean;
+  userId?: string;
+  username?: string;
+  name?: string;
+  error?: string;
+}
+
+export interface TwitterClientUserLookupMethods {
+  getUserIdByUsername(username: string): Promise<UserLookupResult>;
+}
+
+export function withUserLookup<TBase extends AbstractConstructor<TwitterClientBase>>(
+  Base: TBase,
+): Mixin<TBase, TwitterClientUserLookupMethods> {
+  abstract class TwitterClientUserLookup extends Base {
+    // biome-ignore lint/complexity/noUselessConstructor lint/suspicious/noExplicitAny: TS mixin constructor requirement.
+    constructor(...args: any[]) {
+      super(...args);
+    }
+
+    private async getUserByScreenNameGraphQL(screenName: string): Promise<UserLookupResult> {
+      // UserByScreenName query IDs observed from web client
+      const queryIds = ['xc8f1g7BYqr6VTzTbvNlGw', 'qW5u-DAuXpMEG0zA1F7UGQ', 'sLVLhk0bGj3MVFEKTdax1w'];
+
+      const variables = {
+        screen_name: screenName,
+        withSafetyModeUserFields: true,
+      };
+
+      const features = {
+        hidden_profile_subscriptions_enabled: true,
+        hidden_profile_likes_enabled: true,
+        rweb_tipjar_consumption_enabled: true,
+        responsive_web_graphql_exclude_directive_enabled: true,
+        verified_phone_label_enabled: false,
+        subscriptions_verification_info_is_identity_verified_enabled: true,
+        subscriptions_verification_info_verified_since_enabled: true,
+        highlights_tweets_tab_ui_enabled: true,
+        responsive_web_twitter_article_notes_tab_enabled: true,
+        subscriptions_feature_can_gift_premium: true,
+        creator_subscriptions_tweet_preview_api_enabled: true,
+        responsive_web_graphql_skip_user_profile_image_extensions_enabled: false,
+        responsive_web_graphql_timeline_navigation_enabled: true,
+        blue_business_profile_image_shape_enabled: true,
+      };
+
+      const fieldToggles = {
+        withAuxiliaryUserLabels: false,
+      };
+
+      const params = new URLSearchParams({
+        variables: JSON.stringify(variables),
+        features: JSON.stringify(features),
+        fieldToggles: JSON.stringify(fieldToggles),
+      });
+
+      let lastError: string | undefined;
+
+      for (const queryId of queryIds) {
+        const url = `${TWITTER_API_BASE}/${queryId}/UserByScreenName?${params.toString()}`;
+
+        try {
+          const response = await this.fetchWithTimeout(url, {
+            method: 'GET',
+            headers: this.getHeaders(),
+          });
+
+          if (!response.ok) {
+            const text = await response.text();
+            if (response.status === 404) {
+              // Try next query ID
+              lastError = `HTTP ${response.status}`;
+              continue;
+            }
+            lastError = `HTTP ${response.status}: ${text.slice(0, 200)}`;
+            continue;
+          }
+
+          const data = (await response.json()) as {
+            data?: {
+              user?: {
+                result?: {
+                  __typename?: string;
+                  rest_id?: string;
+                  legacy?: {
+                    screen_name?: string;
+                    name?: string;
+                  };
+                  core?: {
+                    screen_name?: string;
+                    name?: string;
+                  };
+                };
+              };
+            };
+            errors?: Array<{ message: string }>;
+          };
+
+          // Check for user not found
+          if (data.data?.user?.result?.__typename === 'UserUnavailable') {
+            return { success: false, error: `User @${screenName} not found or unavailable` };
+          }
+
+          const userResult = data.data?.user?.result;
+          const userId = userResult?.rest_id;
+          const username = userResult?.legacy?.screen_name ?? userResult?.core?.screen_name;
+          const name = userResult?.legacy?.name ?? userResult?.core?.name;
+
+          if (userId && username) {
+            return {
+              success: true,
+              userId,
+              username,
+              name,
+            };
+          }
+
+          if (data.errors && data.errors.length > 0) {
+            lastError = data.errors.map((e) => e.message).join(', ');
+            continue;
+          }
+
+          lastError = 'Could not parse user data from response';
+        } catch (error) {
+          lastError = error instanceof Error ? error.message : String(error);
+        }
+      }
+
+      return { success: false, error: lastError ?? 'Unknown error looking up user' };
+    }
+
+    /**
+     * Look up a user's ID by their username/handle.
+     * Uses GraphQL UserByScreenName first, then falls back to REST on transient failures.
+     */
+    async getUserIdByUsername(username: string): Promise<UserLookupResult> {
+      const cleanUsername = normalizeHandle(username);
+      if (!cleanUsername) {
+        return { success: false, error: `Invalid username: ${username}` };
+      }
+
+      const graphqlResult = await this.getUserByScreenNameGraphQL(cleanUsername);
+      if (graphqlResult.success) {
+        return graphqlResult;
+      }
+
+      // If GraphQL definitively says user is unavailable, don't retry with REST
+      if (graphqlResult.error?.includes('not found or unavailable')) {
+        return graphqlResult;
+      }
+
+      // Fallback to REST API for transient GraphQL errors
+      const urls = [
+        `https://x.com/i/api/1.1/users/show.json?screen_name=${encodeURIComponent(cleanUsername)}`,
+        `https://api.twitter.com/1.1/users/show.json?screen_name=${encodeURIComponent(cleanUsername)}`,
+      ];
+
+      let lastError: string | undefined = graphqlResult.error;
+
+      for (const url of urls) {
+        try {
+          const response = await this.fetchWithTimeout(url, {
+            method: 'GET',
+            headers: this.getHeaders(),
+          });
+
+          if (!response.ok) {
+            const text = await response.text();
+            if (response.status === 404) {
+              return { success: false, error: `User @${cleanUsername} not found` };
+            }
+            lastError = `HTTP ${response.status}: ${text.slice(0, 200)}`;
+            continue;
+          }
+
+          const data = (await response.json()) as {
+            id_str?: string;
+            id?: number;
+            screen_name?: string;
+            name?: string;
+          };
+
+          const userId = data.id_str ?? (data.id ? String(data.id) : null);
+          if (!userId) {
+            lastError = 'Could not parse user ID from response';
+            continue;
+          }
+
+          return {
+            success: true,
+            userId,
+            username: data.screen_name ?? cleanUsername,
+            name: data.name,
+          };
+        } catch (error) {
+          lastError = error instanceof Error ? error.message : String(error);
+        }
+      }
+
+      return { success: false, error: lastError ?? 'Unknown error looking up user' };
+    }
+  }
+
+  return TwitterClientUserLookup;
+}

src/lib/twitter-client-user-tweets.ts

@@ -0,0 +1,262 @@
+import type { AbstractConstructor, Mixin, TwitterClientBase } from './twitter-client-base.js';
+import { TWITTER_API_BASE } from './twitter-client-constants.js';
+import { buildUserTweetsFeatures } from './twitter-client-features.js';
+import type { GraphqlTweetResult, SearchResult, TweetData } from './twitter-client-types.js';
+import { extractCursorFromInstructions, parseTweetsFromInstructions } from './twitter-client-utils.js';
+
+/** Options for user tweets fetch methods */
+export interface UserTweetsFetchOptions {
+  /** Include raw GraphQL response in `_raw` field */
+  includeRaw?: boolean;
+}
+
+/** Options for paginated user tweets fetch */
+export interface UserTweetsPaginationOptions extends UserTweetsFetchOptions {
+  /** Maximum number of pages to fetch (default: 1) */
+  maxPages?: number;
+  /** Starting cursor for pagination (resume from previous fetch) */
+  cursor?: string;
+  /** Delay in milliseconds between page fetches (default: 1000) */
+  pageDelayMs?: number;
+}
+
+export interface TwitterClientUserTweetsMethods {
+  getUserTweets(userId: string, count?: number, options?: UserTweetsFetchOptions): Promise<SearchResult>;
+  getUserTweetsPaged(userId: string, limit: number, options?: UserTweetsPaginationOptions): Promise<SearchResult>;
+}
+
+export function withUserTweets<TBase extends AbstractConstructor<TwitterClientBase>>(
+  Base: TBase,
+): Mixin<TBase, TwitterClientUserTweetsMethods> {
+  abstract class TwitterClientUserTweets extends Base {
+    // biome-ignore lint/complexity/noUselessConstructor lint/suspicious/noExplicitAny: TS mixin constructor requirement.
+    constructor(...args: any[]) {
+      super(...args);
+    }
+
+    private async getUserTweetsQueryIds(): Promise<string[]> {
+      const primary = await this.getQueryId('UserTweets');
+      // Fallback query ID observed from web client
+      return Array.from(new Set([primary, 'Wms1GvIiHXAPBaCr9KblaA']));
+    }
+
+    /**
+     * Get tweets from a user's profile timeline (single page).
+     */
+    async getUserTweets(userId: string, count = 20, options: UserTweetsFetchOptions = {}): Promise<SearchResult> {
+      return this.getUserTweetsPaged(userId, count, options);
+    }
+
+    /**
+     * Get tweets from a user's profile timeline with pagination support.
+     */
+    async getUserTweetsPaged(
+      userId: string,
+      limit: number,
+      options: UserTweetsPaginationOptions = {},
+    ): Promise<SearchResult> {
+      if (!Number.isFinite(limit) || limit <= 0) {
+        return { success: false, error: `Invalid limit: ${limit}` };
+      }
+
+      const { includeRaw = false, maxPages, pageDelayMs = 1000 } = options;
+      const features = buildUserTweetsFeatures();
+      const pageSize = 20;
+      const seen = new Set<string>();
+      const tweets: TweetData[] = [];
+      let cursor: string | undefined = options.cursor;
+      let nextCursor: string | undefined;
+      let pagesFetched = 0;
+      const hardMaxPages = 10;
+      const computedMaxPages = Math.max(1, Math.ceil(limit / pageSize));
+      const effectiveMaxPages = Math.min(hardMaxPages, maxPages ?? computedMaxPages);
+
+      const fetchPage = async (pageCount: number, pageCursor?: string) => {
+        let lastError: string | undefined;
+        let had404 = false;
+        const queryIds = await this.getUserTweetsQueryIds();
+
+        const variables = {
+          userId,
+          count: pageCount,
+          includePromotedContent: false, // Filter out ads
+          withQuickPromoteEligibilityTweetFields: true,
+          withVoice: true,
+          ...(pageCursor ? { cursor: pageCursor } : {}),
+        };
+
+        const fieldToggles = {
+          withArticlePlainText: false,
+        };
+
+        const params = new URLSearchParams({
+          variables: JSON.stringify(variables),
+          features: JSON.stringify(features),
+          fieldToggles: JSON.stringify(fieldToggles),
+        });
+
+        for (const queryId of queryIds) {
+          const url = `${TWITTER_API_BASE}/${queryId}/UserTweets?${params.toString()}`;
+
+          try {
+            const response = await this.fetchWithTimeout(url, {
+              method: 'GET',
+              headers: this.getHeaders(),
+            });
+
+            if (response.status === 404) {
+              had404 = true;
+              lastError = `HTTP ${response.status}`;
+              continue;
+            }
+
+            if (!response.ok) {
+              const text = await response.text();
+              return { success: false as const, error: `HTTP ${response.status}: ${text.slice(0, 200)}`, had404 };
+            }
+
+            const data = (await response.json()) as {
+              data?: {
+                user?: {
+                  result?: {
+                    timeline?: {
+                      timeline?: {
+                        instructions?: Array<{
+                          type?: string;
+                          entries?: Array<{
+                            content?: {
+                              itemContent?: {
+                                tweet_results?: {
+                                  result?: GraphqlTweetResult;
+                                };
+                              };
+                              item?: {
+                                itemContent?: {
+                                  tweet_results?: {
+                                    result?: GraphqlTweetResult;
+                                  };
+                                };
+                              };
+                              items?: Array<{
+                                item?: {
+                                  itemContent?: {
+                                    tweet_results?: {
+                                      result?: GraphqlTweetResult;
+                                    };
+                                  };
+                                };
+                                itemContent?: {
+                                  tweet_results?: {
+                                    result?: GraphqlTweetResult;
+                                  };
+                                };
+                                content?: {
+                                  itemContent?: {
+                                    tweet_results?: {
+                                      result?: GraphqlTweetResult;
+                                    };
+                                  };
+                                };
+                              }>;
+                              cursorType?: string;
+                              value?: string;
+                            };
+                          }>;
+                        }>;
+                      };
+                    };
+                  };
+                };
+              };
+              errors?: Array<{ message: string }>;
+            };
+
+            if (data.errors && data.errors.length > 0) {
+              // Check for common errors
+              const errorMsg = data.errors.map((e) => e.message).join(', ');
+              if (errorMsg.includes('User has been suspended') || errorMsg.includes('User not found')) {
+                return { success: false as const, error: errorMsg, had404 };
+              }
+              // Some errors are non-fatal if we got data
+              if (!data.data?.user?.result?.timeline?.timeline?.instructions) {
+                return { success: false as const, error: errorMsg, had404 };
+              }
+            }
+
+            const instructions = data.data?.user?.result?.timeline?.timeline?.instructions;
+            const pageTweets = parseTweetsFromInstructions(instructions, { quoteDepth: this.quoteDepth, includeRaw });
+            const pageCursorValue = extractCursorFromInstructions(instructions);
+
+            return { success: true as const, tweets: pageTweets, cursor: pageCursorValue, had404 };
+          } catch (error) {
+            lastError = error instanceof Error ? error.message : String(error);
+          }
+        }
+
+        return { success: false as const, error: lastError ?? 'Unknown error fetching user tweets', had404 };
+      };
+
+      const fetchWithRefresh = async (pageCount: number, pageCursor?: string) => {
+        const firstAttempt = await fetchPage(pageCount, pageCursor);
+        if (firstAttempt.success) {
+          return firstAttempt;
+        }
+        if (firstAttempt.had404) {
+          await this.refreshQueryIds();
+          const secondAttempt = await fetchPage(pageCount, pageCursor);
+          if (secondAttempt.success) {
+            return secondAttempt;
+          }
+          return { success: false as const, error: secondAttempt.error };
+        }
+        return { success: false as const, error: firstAttempt.error };
+      };
+
+      while (tweets.length < limit) {
+        // Add delay between pages (but not before the first page)
+        if (pagesFetched > 0 && pageDelayMs > 0) {
+          await this.sleep(pageDelayMs);
+        }
+
+        const remaining = limit - tweets.length;
+        const pageCount = Math.min(pageSize, remaining);
+        const page = await fetchWithRefresh(pageCount, cursor);
+        if (!page.success) {
+          return { success: false, error: page.error };
+        }
+        pagesFetched += 1;
+
+        let added = 0;
+        for (const tweet of page.tweets) {
+          if (seen.has(tweet.id)) {
+            continue;
+          }
+          seen.add(tweet.id);
+          tweets.push(tweet);
+          added += 1;
+          if (tweets.length >= limit) {
+            break;
+          }
+        }
+
+        const pageCursor = page.cursor;
+        if (!pageCursor || pageCursor === cursor || page.tweets.length === 0 || added === 0) {
+          nextCursor = undefined;
+          break;
+        }
+
+        if (pagesFetched >= effectiveMaxPages) {
+          nextCursor = pageCursor;
+          break;
+        }
+
+        cursor = pageCursor;
+        nextCursor = pageCursor;
+      }
+
+      return { success: true, tweets, nextCursor };
+    }
+  }
+
+  return TwitterClientUserTweets;
+}

src/lib/twitter-client-users.ts

@@ -0,0 +1,499 @@
+import type { AbstractConstructor, Mixin, TwitterClientBase } from './twitter-client-base.js';
+import {
+  SETTINGS_NAME_REGEX,
+  SETTINGS_SCREEN_NAME_REGEX,
+  SETTINGS_USER_ID_REGEX,
+  TWITTER_API_BASE,
+} from './twitter-client-constants.js';
+import { buildFollowingFeatures } from './twitter-client-features.js';
+import type { CurrentUserResult, FollowingResult, TwitterUser } from './twitter-client-types.js';
+import { extractCursorFromInstructions, parseUsersFromInstructions } from './twitter-client-utils.js';
+
+type RestUser = {
+  id_str?: string;
+  id?: string | number;
+  screen_name?: string;
+  name?: string;
+  description?: string;
+  followers_count?: number;
+  friends_count?: number;
+  verified?: boolean;
+  profile_image_url_https?: string;
+  created_at?: string;
+};
+
+export interface TwitterClientUserMethods {
+  getCurrentUser(): Promise<CurrentUserResult>;
+  getFollowing(userId: string, count?: number, cursor?: string): Promise<FollowingResult>;
+  getFollowers(userId: string, count?: number, cursor?: string): Promise<FollowingResult>;
+}
+
+export function withUsers<TBase extends AbstractConstructor<TwitterClientBase>>(
+  Base: TBase,
+): Mixin<TBase, TwitterClientUserMethods> {
+  abstract class TwitterClientUsers extends Base {
+    // biome-ignore lint/complexity/noUselessConstructor lint/suspicious/noExplicitAny: TS mixin constructor requirement.
+    constructor(...args: any[]) {
+      super(...args);
+    }
+
+    private async getFollowingQueryIds(): Promise<string[]> {
+      const primary = await this.getQueryId('Following');
+      return Array.from(new Set([primary, 'BEkNpEt5pNETESoqMsTEGA']));
+    }
+
+    private async getFollowersQueryIds(): Promise<string[]> {
+      const primary = await this.getQueryId('Followers');
+      return Array.from(new Set([primary, 'kuFUYP9eV1FPoEy4N-pi7w']));
+    }
+
+    private parseUsersFromRestResponse(users: RestUser[] | undefined): TwitterUser[] {
+      return (users ?? [])
+        .map((u) => {
+          const id = typeof u.id_str === 'string' ? u.id_str : typeof u.id === 'number' ? String(u.id) : null;
+          const username = typeof u.screen_name === 'string' ? u.screen_name : null;
+          if (!id || !username) {
+            return null;
+          }
+          return {
+            id,
+            username,
+            name: typeof u.name === 'string' && u.name.length > 0 ? u.name : username,
+            description: typeof u.description === 'string' ? u.description : undefined,
+            followersCount: typeof u.followers_count === 'number' ? u.followers_count : undefined,
+            followingCount: typeof u.friends_count === 'number' ? u.friends_count : undefined,
+            isBlueVerified: typeof u.verified === 'boolean' ? u.verified : undefined,
+            profileImageUrl: typeof u.profile_image_url_https === 'string' ? u.profile_image_url_https : undefined,
+            createdAt: typeof u.created_at === 'string' ? u.created_at : undefined,
+          };
+        })
+        .filter((u) => u !== null);
+    }
+
+    private async getFollowersViaRest(userId: string, count: number): Promise<FollowingResult> {
+      const params = new URLSearchParams({
+        user_id: userId,
+        count: String(count),
+        skip_status: 'true',
+        include_user_entities: 'false',
+      });
+
+      const urls = [
+        `https://x.com/i/api/1.1/followers/list.json?${params.toString()}`,
+        `https://api.twitter.com/1.1/followers/list.json?${params.toString()}`,
+      ];
+
+      let lastError: string | undefined;
+
+      for (const url of urls) {
+        try {
+          const response = await this.fetchWithTimeout(url, {
+            method: 'GET',
+            headers: this.getHeaders(),
+          });
+
+          if (!response.ok) {
+            const text = await response.text();
+            lastError = `HTTP ${response.status}: ${text.slice(0, 200)}`;
+            continue;
+          }
+
+          const data = (await response.json()) as {
+            users?: RestUser[];
+          };
+
+          const users = this.parseUsersFromRestResponse(data.users);
+
+          return { success: true, users };
+        } catch (error) {
+          lastError = error instanceof Error ? error.message : String(error);
+        }
+      }
+
+      return { success: false, error: lastError ?? 'Unknown error fetching followers' };
+    }
+
+    private async getFollowingViaRest(userId: string, count: number): Promise<FollowingResult> {
+      const params = new URLSearchParams({
+        user_id: userId,
+        count: String(count),
+        skip_status: 'true',
+        include_user_entities: 'false',
+      });
+
+      const urls = [
+        `https://x.com/i/api/1.1/friends/list.json?${params.toString()}`,
+        `https://api.twitter.com/1.1/friends/list.json?${params.toString()}`,
+      ];
+
+      let lastError: string | undefined;
+
+      for (const url of urls) {
+        try {
+          const response = await this.fetchWithTimeout(url, {
+            method: 'GET',
+            headers: this.getHeaders(),
+          });
+
+          if (!response.ok) {
+            const text = await response.text();
+            lastError = `HTTP ${response.status}: ${text.slice(0, 200)}`;
+            continue;
+          }
+
+          const data = (await response.json()) as {
+            users?: RestUser[];
+          };
+
+          const users = this.parseUsersFromRestResponse(data.users);
+
+          return { success: true, users };
+        } catch (error) {
+          lastError = error instanceof Error ? error.message : String(error);
+        }
+      }
+
+      return { success: false, error: lastError ?? 'Unknown error fetching following' };
+    }
+
+    /**
+     * Fetch the account associated with the current cookies
+     */
+    async getCurrentUser(): Promise<CurrentUserResult> {
+      const candidateUrls = [
+        'https://x.com/i/api/account/settings.json',
+        'https://api.twitter.com/1.1/account/settings.json',
+        'https://x.com/i/api/account/verify_credentials.json?skip_status=true&include_entities=false',
+        'https://api.twitter.com/1.1/account/verify_credentials.json?skip_status=true&include_entities=false',
+      ];
+
+      let lastError: string | undefined;
+
+      for (const url of candidateUrls) {
+        try {
+          const response = await this.fetchWithTimeout(url, {
+            method: 'GET',
+            headers: this.getHeaders(),
+          });
+
+          if (!response.ok) {
+            const text = await response.text();
+            lastError = `HTTP ${response.status}: ${text.slice(0, 200)}`;
+            continue;
+          }
+
+          // biome-ignore lint/suspicious/noExplicitAny: Twitter API response is dynamic here
+          let data: any;
+          try {
+            data = await response.json();
+          } catch (error) {
+            lastError = error instanceof Error ? error.message : String(error);
+            continue;
+          }
+
+          const username =
+            typeof data?.screen_name === 'string'
+              ? data.screen_name
+              : typeof data?.user?.screen_name === 'string'
+                ? data.user.screen_name
+                : null;
+
+          const name =
+            typeof data?.name === 'string'
+              ? data.name
+              : typeof data?.user?.name === 'string'
+                ? data.user.name
+                : (username ?? '');
+
+          const userId =
+            typeof data?.user_id === 'string'
+              ? data.user_id
+              : typeof data?.user_id_str === 'string'
+                ? data.user_id_str
+                : typeof data?.user?.id_str === 'string'
+                  ? data.user.id_str
+                  : typeof data?.user?.id === 'string'
+                    ? data.user.id
+                    : null;
+
+          if (username && userId) {
+            this.clientUserId = userId;
+            return {
+              success: true,
+              user: {
+                id: userId,
+                username,
+                name: name || username,
+              },
+            };
+          }
+
+          lastError = 'Could not determine current user from response';
+        } catch (error) {
+          lastError = error instanceof Error ? error.message : String(error);
+        }
+      }
+
+      // Fallback: scrape the authenticated settings page (HTML) for screen_name/user_id
+      const profilePages = ['https://x.com/settings/account', 'https://twitter.com/settings/account'];
+      for (const page of profilePages) {
+        try {
+          const response = await this.fetchWithTimeout(page, {
+            headers: {
+              cookie: this.cookieHeader,
+              'user-agent': this.userAgent,
+            },
+          });
+
+          if (!response.ok) {
+            lastError = `HTTP ${response.status} (settings page)`;
+            continue;
+          }
+
+          const html = await response.text();
+          const usernameMatch = SETTINGS_SCREEN_NAME_REGEX.exec(html);
+          const idMatch = SETTINGS_USER_ID_REGEX.exec(html);
+          const nameMatch = SETTINGS_NAME_REGEX.exec(html);
+
+          const username = usernameMatch?.[1];
+          const userId = idMatch?.[1];
+          const name = nameMatch?.[1]?.replace(/\\"/g, '"');
+
+          if (username && userId) {
+            return {
+              success: true,
+              user: {
+                id: userId,
+                username,
+                name: name || username,
+              },
+            };
+          }
+
+          lastError = 'Could not parse settings page for user info';
+        } catch (error) {
+          lastError = error instanceof Error ? error.message : String(error);
+        }
+      }
+
+      return {
+        success: false,
+        error: lastError ?? 'Unknown error fetching current user',
+      };
+    }
+
+    /**
+     * Get users that a user is following
+     */
+    async getFollowing(userId: string, count = 20, cursor?: string): Promise<FollowingResult> {
+      const variables: Record<string, unknown> = {
+        userId,
+        count,
+        includePromotedContent: false,
+      };
+
+      if (cursor) {
+        variables.cursor = cursor;
+      }
+
+      const features = buildFollowingFeatures();
+
+      const params = new URLSearchParams({
+        variables: JSON.stringify(variables),
+        features: JSON.stringify(features),
+      });
+
+      const tryOnce = async () => {
+        let lastError: string | undefined;
+        let had404 = false;
+        const queryIds = await this.getFollowingQueryIds();
+
+        for (const queryId of queryIds) {
+          const url = `${TWITTER_API_BASE}/${queryId}/Following?${params.toString()}`;
+
+          try {
+            const response = await this.fetchWithTimeout(url, {
+              method: 'GET',
+              headers: this.getHeaders(),
+            });
+
+            if (response.status === 404) {
+              had404 = true;
+              lastError = `HTTP ${response.status}`;
+              continue;
+            }
+
+            if (!response.ok) {
+              const text = await response.text();
+              return { success: false as const, error: `HTTP ${response.status}: ${text.slice(0, 200)}`, had404 };
+            }
+
+            const data = (await response.json()) as {
+              data?: {
+                user?: {
+                  result?: {
+                    timeline?: {
+                      timeline?: {
+                        instructions?: Array<{ type?: string; entries?: Array<unknown> }>;
+                      };
+                    };
+                  };
+                };
+              };
+              errors?: Array<{ message: string }>;
+            };
+
+            if (data.errors && data.errors.length > 0) {
+              return { success: false as const, error: data.errors.map((e) => e.message).join(', '), had404 };
+            }
+
+            const instructions = data.data?.user?.result?.timeline?.timeline?.instructions;
+            const users = parseUsersFromInstructions(instructions);
+            const nextCursor = extractCursorFromInstructions(
+              instructions as Array<{ entries?: Array<{ content?: unknown }> }> | undefined,
+            );
+
+            return { success: true as const, users, nextCursor, had404 };
+          } catch (error) {
+            lastError = error instanceof Error ? error.message : String(error);
+          }
+        }
+
+        return { success: false as const, error: lastError ?? 'Unknown error fetching following', had404 };
+      };
+
+      const firstAttempt = await tryOnce();
+      if (firstAttempt.success) {
+        return { success: true, users: firstAttempt.users, nextCursor: firstAttempt.nextCursor };
+      }
+
+      if (firstAttempt.had404) {
+        await this.refreshQueryIds();
+        const secondAttempt = await tryOnce();
+        if (secondAttempt.success) {
+          return { success: true, users: secondAttempt.users, nextCursor: secondAttempt.nextCursor };
+        }
+
+        // GraphQL Following can also return 404 (queryId churn / endpoint flakiness).
+        // Fallback to the internal v1.1 REST endpoint used by the web client (cookie-auth; no dev API key).
+        // Note: REST fallback does not support cursor pagination.
+        const restAttempt = await this.getFollowingViaRest(userId, count);
+        if (restAttempt.success) {
+          return restAttempt;
+        }
+
+        return { success: false, error: secondAttempt.error };
+      }
+
+      return { success: false, error: firstAttempt.error };
+    }
+
+    /**
+     * Get users that follow a user
+     */
+    async getFollowers(userId: string, count = 20, cursor?: string): Promise<FollowingResult> {
+      const variables: Record<string, unknown> = {
+        userId,
+        count,
+        includePromotedContent: false,
+      };
+
+      if (cursor) {
+        variables.cursor = cursor;
+      }
+
+      const features = buildFollowingFeatures();
+
+      const params = new URLSearchParams({
+        variables: JSON.stringify(variables),
+        features: JSON.stringify(features),
+      });
+
+      const tryOnce = async () => {
+        let lastError: string | undefined;
+        let had404 = false;
+        const queryIds = await this.getFollowersQueryIds();
+
+        for (const queryId of queryIds) {
+          const url = `${TWITTER_API_BASE}/${queryId}/Followers?${params.toString()}`;
+
+          try {
+            const response = await this.fetchWithTimeout(url, {
+              method: 'GET',
+              headers: this.getHeaders(),
+            });
+
+            if (response.status === 404) {
+              had404 = true;
+              lastError = `HTTP ${response.status}`;
+              continue;
+            }
+
+            if (!response.ok) {
+              const text = await response.text();
+              return { success: false as const, error: `HTTP ${response.status}: ${text.slice(0, 200)}`, had404 };
+            }
+
+            const data = (await response.json()) as {
+              data?: {
+                user?: {
+                  result?: {
+                    timeline?: {
+                      timeline?: {
+                        instructions?: Array<{ type?: string; entries?: Array<unknown> }>;
+                      };
+                    };
+                  };
+                };
+              };
+              errors?: Array<{ message: string }>;
+            };
+
+            if (data.errors && data.errors.length > 0) {
+              return { success: false as const, error: data.errors.map((e) => e.message).join(', '), had404 };
+            }
+
+            const instructions = data.data?.user?.result?.timeline?.timeline?.instructions;
+            const users = parseUsersFromInstructions(instructions);
+            const nextCursor = extractCursorFromInstructions(
+              instructions as Array<{ entries?: Array<{ content?: unknown }> }> | undefined,
+            );
+
+            return { success: true as const, users, nextCursor, had404 };
+          } catch (error) {
+            lastError = error instanceof Error ? error.message : String(error);
+          }
+        }
+
+        return { success: false as const, error: lastError ?? 'Unknown error fetching followers', had404 };
+      };
+
+      const firstAttempt = await tryOnce();
+      if (firstAttempt.success) {
+        return { success: true, users: firstAttempt.users, nextCursor: firstAttempt.nextCursor };
+      }
+
+      if (firstAttempt.had404) {
+        await this.refreshQueryIds();
+        const secondAttempt = await tryOnce();
+        if (secondAttempt.success) {
+          return { success: true, users: secondAttempt.users, nextCursor: secondAttempt.nextCursor };
+        }
+
+        // GraphQL Followers regularly returns 404 (queryId churn / endpoint flakiness).
+        // Fallback to the internal v1.1 REST endpoint used by the web client (cookie-auth; no dev API key).
+        // Note: REST fallback does not support cursor pagination.
+        const restAttempt = await this.getFollowersViaRest(userId, count);
+        if (restAttempt.success) {
+          return restAttempt;
+        }
+
+        return { success: false, error: secondAttempt.error };
+      }
+
+      return { success: false, error: firstAttempt.error };
+    }
+  }
+
+  return TwitterClientUsers;
+}

src/lib/twitter-client-utils.ts

@@ -0,0 +1,839 @@
+import type { GraphqlTweetResult, TweetData, TweetMedia, TwitterUser } from './twitter-client-types.js';
+
+export function normalizeQuoteDepth(value?: number): number {
+  if (value === undefined || value === null) {
+    return 1;
+  }
+  if (!Number.isFinite(value)) {
+    return 1;
+  }
+  return Math.max(0, Math.floor(value));
+}
+
+export function firstText(...values: Array<string | undefined | null>): string | undefined {
+  for (const value of values) {
+    if (typeof value === 'string') {
+      const trimmed = value.trim();
+      if (trimmed) {
+        return trimmed;
+      }
+    }
+  }
+  return undefined;
+}
+
+export function collectTextFields(value: unknown, keys: Set<string>, output: string[]): void {
+  if (!value) {
+    return;
+  }
+  if (typeof value === 'string') {
+    return;
+  }
+
+  if (Array.isArray(value)) {
+    for (const item of value) {
+      collectTextFields(item, keys, output);
+    }
+    return;
+  }
+
+  if (typeof value === 'object') {
+    for (const [key, nested] of Object.entries(value as Record<string, unknown>)) {
+      if (keys.has(key)) {
+        if (typeof nested === 'string') {
+          const trimmed = nested.trim();
+          if (trimmed) {
+            output.push(trimmed);
+          }
+          continue;
+        }
+      }
+      collectTextFields(nested, keys, output);
+    }
+  }
+}
+
+export function uniqueOrdered(values: string[]): string[] {
+  const seen = new Set<string>();
+  const result: string[] = [];
+  for (const value of values) {
+    if (seen.has(value)) {
+      continue;
+    }
+    seen.add(value);
+    result.push(value);
+  }
+  return result;
+}
+
+// ============================================================================
+// Draft.js Content State Types and Parser for Long-form Tweets (X Articles)
+// ============================================================================
+
+/** Inline style range for text formatting (Bold, Italic, etc.) */
+interface InlineStyleRange {
+  offset: number;
+  length: number;
+  style: string;
+}
+
+/** Entity range linking a portion of text to an entity in entityMap */
+interface EntityRange {
+  key: number;
+  offset: number;
+  length: number;
+}
+
+/** A content block in Draft.js format */
+interface ContentBlock {
+  key: string;
+  type: string;
+  text: string;
+  data?: {
+    mentions?: Array<{ fromIndex: number; toIndex: number; text: string }>;
+  };
+  entityRanges?: EntityRange[];
+  inlineStyleRanges?: InlineStyleRange[];
+}
+
+/** Entity data for different entity types */
+interface EntityValue {
+  type: string;
+  mutability: string;
+  data: {
+    markdown?: string;
+    url?: string;
+    tweetId?: string;
+  };
+}
+
+/** Entity map entry */
+interface EntityMapEntry {
+  key: string;
+  value: EntityValue;
+}
+
+/** Draft.js content state structure */
+interface ContentState {
+  blocks: ContentBlock[];
+  entityMap?: Array<EntityMapEntry> | Record<string, EntityValue>;
+}
+
+/**
+ * Renders a Draft.js content_state into readable markdown/text format.
+ * Handles blocks (paragraphs, headers, lists) and entities (code blocks, links, tweets, dividers).
+ */
+export function renderContentState(contentState: ContentState | undefined): string | undefined {
+  if (!contentState?.blocks || contentState.blocks.length === 0) {
+    return undefined;
+  }
+
+  // Build entity lookup map from array/object formats
+  const entityMap = new Map<number, EntityValue>();
+  const rawEntityMap = contentState.entityMap ?? [];
+  if (Array.isArray(rawEntityMap)) {
+    for (const entry of rawEntityMap) {
+      const key = Number.parseInt(entry.key, 10);
+      if (!Number.isNaN(key)) {
+        entityMap.set(key, entry.value);
+      }
+    }
+  } else {
+    for (const [key, value] of Object.entries(rawEntityMap)) {
+      const keyNumber = Number.parseInt(key, 10);
+      if (!Number.isNaN(keyNumber)) {
+        entityMap.set(keyNumber, value);
+      }
+    }
+  }
+
+  const outputLines: string[] = [];
+  let orderedListCounter = 0;
+  let previousBlockType: string | undefined;
+
+  for (const block of contentState.blocks) {
+    // Reset ordered list counter when leaving ordered list context
+    if (block.type !== 'ordered-list-item' && previousBlockType === 'ordered-list-item') {
+      orderedListCounter = 0;
+    }
+
+    switch (block.type) {
+      case 'unstyled': {
+        // Plain paragraph - just output text with any inline formatting
+        const text = renderBlockText(block, entityMap);
+        if (text) {
+          outputLines.push(text);
+        }
+        break;
+      }
+
+      case 'header-one': {
+        const text = renderBlockText(block, entityMap);
+        if (text) {
+          outputLines.push(`# ${text}`);
+        }
+        break;
+      }
+
+      case 'header-two': {
+        const text = renderBlockText(block, entityMap);
+        if (text) {
+          outputLines.push(`## ${text}`);
+        }
+        break;
+      }
+
+      case 'header-three': {
+        const text = renderBlockText(block, entityMap);
+        if (text) {
+          outputLines.push(`### ${text}`);
+        }
+        break;
+      }
+
+      case 'unordered-list-item': {
+        const text = renderBlockText(block, entityMap);
+        if (text) {
+          outputLines.push(`- ${text}`);
+        }
+        break;
+      }
+
+      case 'ordered-list-item': {
+        orderedListCounter++;
+        const text = renderBlockText(block, entityMap);
+        if (text) {
+          outputLines.push(`${orderedListCounter}. ${text}`);
+        }
+        break;
+      }
+
+      case 'blockquote': {
+        const text = renderBlockText(block, entityMap);
+        if (text) {
+          outputLines.push(`> ${text}`);
+        }
+        break;
+      }
+
+      case 'atomic': {
+        // Atomic blocks are placeholders for embedded entities
+        const entityContent = renderAtomicBlock(block, entityMap);
+        if (entityContent) {
+          outputLines.push(entityContent);
+        }
+        break;
+      }
+
+      default: {
+        // Fallback: just output the text
+        const text = renderBlockText(block, entityMap);
+        if (text) {
+          outputLines.push(text);
+        }
+      }
+    }
+
+    previousBlockType = block.type;
+  }
+
+  const result = outputLines.join('\n\n');
+  return result.trim() || undefined;
+}
+
+/**
+ * Renders text content of a block, applying inline link entities.
+ */
+function renderBlockText(block: ContentBlock, entityMap: Map<number, EntityValue>): string {
+  let text = block.text;
+
+  // Handle LINK entities by appending URL in markdown format
+  // Process in reverse order to not mess up offsets
+  const linkRanges = (block.entityRanges ?? [])
+    .filter((range) => {
+      const entity = entityMap.get(range.key);
+      return entity?.type === 'LINK' && entity.data.url;
+    })
+    .sort((a, b) => b.offset - a.offset);
+
+  for (const range of linkRanges) {
+    const entity = entityMap.get(range.key);
+    if (entity?.data.url) {
+      const linkText = text.slice(range.offset, range.offset + range.length);
+      const markdownLink = `[${linkText}](${entity.data.url})`;
+      text = text.slice(0, range.offset) + markdownLink + text.slice(range.offset + range.length);
+    }
+  }
+
+  return text.trim();
+}
+
+/**
+ * Renders an atomic block by looking up its entity and returning appropriate content.
+ */
+function renderAtomicBlock(block: ContentBlock, entityMap: Map<number, EntityValue>): string | undefined {
+  const entityRanges = block.entityRanges ?? [];
+  if (entityRanges.length === 0) {
+    return undefined;
+  }
+
+  const entityKey = entityRanges[0].key;
+  const entity = entityMap.get(entityKey);
+
+  if (!entity) {
+    return undefined;
+  }
+
+  switch (entity.type) {
+    case 'MARKDOWN':
+      // Code blocks and other markdown content - output as-is
+      return entity.data.markdown?.trim();
+
+    case 'DIVIDER':
+      return '---';
+
+    case 'TWEET':
+      if (entity.data.tweetId) {
+        return `[Embedded Tweet: https://x.com/i/status/${entity.data.tweetId}]`;
+      }
+      return undefined;
+
+    case 'LINK':
+      if (entity.data.url) {
+        return `[Link: ${entity.data.url}]`;
+      }
+      return undefined;
+
+    case 'IMAGE':
+      // Images in atomic blocks - could extract URL if available
+      return '[Image]';
+
+    default:
+      return undefined;
+  }
+}
+
+export function extractArticleText(result: GraphqlTweetResult | undefined): string | undefined {
+  const article = result?.article;
+  if (!article) {
+    return undefined;
+  }
+
+  const articleResult = article.article_results?.result ?? article;
+  if (process.env.BIRD_DEBUG_ARTICLE === '1') {
+    console.error(
+      '[bird][debug][article] payload:',
+      JSON.stringify(
+        {
+          rest_id: result?.rest_id,
+          article: articleResult,
+          note_tweet: result?.note_tweet?.note_tweet_results?.result ?? null,
+        },
+        null,
+        2,
+      ),
+    );
+  }
+
+  const title = firstText(articleResult.title, article.title);
+
+  // Try to render from rich content_state first (Draft.js format with blocks + entityMap)
+  // This preserves code blocks, embedded tweets, markdown, etc.
+  const contentState = article.article_results?.result?.content_state;
+  const richBody = renderContentState(contentState);
+  if (richBody) {
+    // Rich content found - prepend title if not already included
+    if (title) {
+      const normalizedTitle = title.trim();
+      const trimmedBody = richBody.trimStart();
+      const headingMatches = [`# ${normalizedTitle}`, `## ${normalizedTitle}`, `### ${normalizedTitle}`];
+      const hasTitle =
+        trimmedBody === normalizedTitle ||
+        trimmedBody.startsWith(`${normalizedTitle}\n`) ||
+        headingMatches.some((heading) => trimmedBody.startsWith(heading));
+      if (!hasTitle) {
+        return `${title}\n\n${richBody}`;
+      }
+    }
+    return richBody;
+  }
+
+  // Fallback to plain text extraction for articles without rich content_state
+  let body = firstText(
+    articleResult.plain_text,
+    article.plain_text,
+    articleResult.body?.text,
+    articleResult.body?.richtext?.text,
+    articleResult.body?.rich_text?.text,
+    articleResult.content?.text,
+    articleResult.content?.richtext?.text,
+    articleResult.content?.rich_text?.text,
+    articleResult.text,
+    articleResult.richtext?.text,
+    articleResult.rich_text?.text,
+    article.body?.text,
+    article.body?.richtext?.text,
+    article.body?.rich_text?.text,
+    article.content?.text,
+    article.content?.richtext?.text,
+    article.content?.rich_text?.text,
+    article.text,
+    article.richtext?.text,
+    article.rich_text?.text,
+  );
+
+  if (body && title && body.trim() === title.trim()) {
+    body = undefined;
+  }
+
+  if (!body) {
+    const collected: string[] = [];
+    collectTextFields(articleResult, new Set(['text', 'title']), collected);
+    collectTextFields(article, new Set(['text', 'title']), collected);
+    const unique = uniqueOrdered(collected);
+    const filtered = title ? unique.filter((value) => value !== title) : unique;
+    if (filtered.length > 0) {
+      body = filtered.join('\n\n');
+    }
+  }
+
+  if (title && body && !body.startsWith(title)) {
+    return `${title}\n\n${body}`;
+  }
+
+  return body ?? title;
+}
+
+export function extractNoteTweetText(result: GraphqlTweetResult | undefined): string | undefined {
+  const note = result?.note_tweet?.note_tweet_results?.result;
+  if (!note) {
+    return undefined;
+  }
+
+  return firstText(
+    note.text,
+    note.richtext?.text,
+    note.rich_text?.text,
+    note.content?.text,
+    note.content?.richtext?.text,
+    note.content?.rich_text?.text,
+  );
+}
+
+export function extractTweetText(result: GraphqlTweetResult | undefined): string | undefined {
+  return extractArticleText(result) ?? extractNoteTweetText(result) ?? firstText(result?.legacy?.full_text);
+}
+
+export function extractArticleMetadata(
+  result: GraphqlTweetResult | undefined,
+): { title: string; previewText?: string } | undefined {
+  const article = result?.article;
+  if (!article) {
+    return undefined;
+  }
+
+  const articleResult = article.article_results?.result ?? article;
+  const title = firstText(articleResult.title, article.title);
+  if (!title) {
+    return undefined;
+  }
+
+  // preview_text is available in home timeline responses
+  const previewText = firstText(articleResult.preview_text, article.preview_text);
+
+  return { title, previewText };
+}
+
+export function extractMedia(result: GraphqlTweetResult | undefined): TweetMedia[] | undefined {
+  // Prefer extended_entities (has video info), fall back to entities
+  const rawMedia = result?.legacy?.extended_entities?.media ?? result?.legacy?.entities?.media;
+  if (!rawMedia || rawMedia.length === 0) {
+    return undefined;
+  }
+
+  const media: TweetMedia[] = [];
+
+  for (const item of rawMedia) {
+    if (!item.type || !item.media_url_https) {
+      continue;
+    }
+
+    const mediaItem: TweetMedia = {
+      type: item.type,
+      url: item.media_url_https,
+    };
+
+    // Get dimensions from largest available size
+    const sizes = item.sizes;
+    if (sizes?.large) {
+      mediaItem.width = sizes.large.w;
+      mediaItem.height = sizes.large.h;
+    } else if (sizes?.medium) {
+      mediaItem.width = sizes.medium.w;
+      mediaItem.height = sizes.medium.h;
+    }
+
+    // For thumbnails/previews
+    if (sizes?.small) {
+      mediaItem.previewUrl = `${item.media_url_https}:small`;
+    }
+
+    // Extract video URL for video/animated_gif
+    if ((item.type === 'video' || item.type === 'animated_gif') && item.video_info?.variants) {
+      // Prefer highest bitrate MP4, fall back to first MP4 when bitrate is missing.
+      const mp4Variants = item.video_info.variants.filter(
+        (v): v is { bitrate?: number; content_type: string; url: string } =>
+          v.content_type === 'video/mp4' && typeof v.url === 'string',
+      );
+      const mp4WithBitrate = mp4Variants
+        .filter((v): v is { bitrate: number; content_type: string; url: string } => typeof v.bitrate === 'number')
+        .sort((a, b) => b.bitrate - a.bitrate);
+      const selectedVariant = mp4WithBitrate[0] ?? mp4Variants[0];
+
+      if (selectedVariant) {
+        mediaItem.videoUrl = selectedVariant.url;
+      }
+
+      if (typeof item.video_info.duration_millis === 'number') {
+        mediaItem.durationMs = item.video_info.duration_millis;
+      }
+    }
+
+    media.push(mediaItem);
+  }
+
+  return media.length > 0 ? media : undefined;
+}
+
+export function unwrapTweetResult(result: GraphqlTweetResult | undefined): GraphqlTweetResult | undefined {
+  if (!result) {
+    return undefined;
+  }
+  if (result.tweet) {
+    return result.tweet;
+  }
+  return result;
+}
+
+export interface MapTweetResultOptions {
+  quoteDepth: number;
+  includeRaw?: boolean;
+}
+
+export function mapTweetResult(
+  result: GraphqlTweetResult | undefined,
+  quoteDepthOrOptions: number | MapTweetResultOptions,
+): TweetData | undefined {
+  const options: MapTweetResultOptions =
+    typeof quoteDepthOrOptions === 'number' ? { quoteDepth: quoteDepthOrOptions } : quoteDepthOrOptions;
+  const { quoteDepth, includeRaw = false } = options;
+
+  const userResult = result?.core?.user_results?.result;
+  const userLegacy = userResult?.legacy;
+  const userCore = userResult?.core;
+  const username = userLegacy?.screen_name ?? userCore?.screen_name;
+  const name = userLegacy?.name ?? userCore?.name ?? username;
+  const userId = userResult?.rest_id;
+  if (!result?.rest_id || !username) {
+    return undefined;
+  }
+
+  const text = extractTweetText(result);
+  if (!text) {
+    return undefined;
+  }
+
+  let quotedTweet: TweetData | undefined;
+  if (quoteDepth > 0) {
+    const quotedResult = unwrapTweetResult(result.quoted_status_result?.result);
+    if (quotedResult) {
+      quotedTweet = mapTweetResult(quotedResult, { quoteDepth: quoteDepth - 1, includeRaw });
+    }
+  }
+
+  const media = extractMedia(result);
+  const article = extractArticleMetadata(result);
+
+  const tweetData: TweetData = {
+    id: result.rest_id,
+    text,
+    createdAt: result.legacy?.created_at,
+    replyCount: result.legacy?.reply_count,
+    retweetCount: result.legacy?.retweet_count,
+    likeCount: result.legacy?.favorite_count,
+    conversationId: result.legacy?.conversation_id_str,
+    inReplyToStatusId: result.legacy?.in_reply_to_status_id_str ?? undefined,
+    author: {
+      username,
+      name: name || username,
+    },
+    authorId: userId,
+    quotedTweet,
+    media,
+    article,
+  };
+
+  if (includeRaw) {
+    (tweetData as TweetData & { _raw: GraphqlTweetResult })._raw = result;
+  }
+
+  return tweetData;
+}
+
+export function findTweetInInstructions(
+  instructions:
+    | Array<{
+        entries?: Array<{
+          content?: {
+            itemContent?: {
+              tweet_results?: {
+                result?: GraphqlTweetResult;
+              };
+            };
+          };
+        }>;
+      }>
+    | undefined,
+  tweetId: string,
+): GraphqlTweetResult | undefined {
+  if (!instructions) {
+    return undefined;
+  }
+
+  for (const instruction of instructions) {
+    for (const entry of instruction.entries || []) {
+      const result = entry.content?.itemContent?.tweet_results?.result;
+      if (result?.rest_id === tweetId) {
+        return result;
+      }
+    }
+  }
+
+  return undefined;
+}
+
+export function collectTweetResultsFromEntry(entry: {
+  content?: {
+    itemContent?: {
+      tweet_results?: {
+        result?: GraphqlTweetResult;
+      };
+    };
+    item?: {
+      itemContent?: {
+        tweet_results?: {
+          result?: GraphqlTweetResult;
+        };
+      };
+    };
+    items?: Array<{
+      item?: {
+        itemContent?: {
+          tweet_results?: {
+            result?: GraphqlTweetResult;
+          };
+        };
+      };
+      itemContent?: {
+        tweet_results?: {
+          result?: GraphqlTweetResult;
+        };
+      };
+      content?: {
+        itemContent?: {
+          tweet_results?: {
+            result?: GraphqlTweetResult;
+          };
+        };
+      };
+    }>;
+  };
+}): GraphqlTweetResult[] {
+  const results: GraphqlTweetResult[] = [];
+  const pushResult = (result?: GraphqlTweetResult) => {
+    if (result?.rest_id) {
+      results.push(result);
+    }
+  };
+
+  const content = entry.content;
+  pushResult(content?.itemContent?.tweet_results?.result);
+  pushResult(content?.item?.itemContent?.tweet_results?.result);
+
+  for (const item of content?.items ?? []) {
+    pushResult(item?.item?.itemContent?.tweet_results?.result);
+    pushResult(item?.itemContent?.tweet_results?.result);
+    pushResult(item?.content?.itemContent?.tweet_results?.result);
+  }
+
+  return results;
+}
+
+export interface ParseTweetsOptions {
+  quoteDepth: number;
+  includeRaw?: boolean;
+}
+
+export function parseTweetsFromInstructions(
+  instructions:
+    | Array<{
+        entries?: Array<{
+          content?: {
+            itemContent?: {
+              tweet_results?: {
+                result?: GraphqlTweetResult;
+              };
+            };
+            item?: {
+              itemContent?: {
+                tweet_results?: {
+                  result?: GraphqlTweetResult;
+                };
+              };
+            };
+            items?: Array<{
+              item?: {
+                itemContent?: {
+                  tweet_results?: {
+                    result?: GraphqlTweetResult;
+                  };
+                };
+              };
+              itemContent?: {
+                tweet_results?: {
+                  result?: GraphqlTweetResult;
+                };
+              };
+              content?: {
+                itemContent?: {
+                  tweet_results?: {
+                    result?: GraphqlTweetResult;
+                  };
+                };
+              };
+            }>;
+          };
+        }>;
+      }>
+    | undefined,
+  quoteDepthOrOptions: number | ParseTweetsOptions,
+): TweetData[] {
+  const options: ParseTweetsOptions =
+    typeof quoteDepthOrOptions === 'number' ? { quoteDepth: quoteDepthOrOptions } : quoteDepthOrOptions;
+  const { quoteDepth, includeRaw = false } = options;
+
+  const tweets: TweetData[] = [];
+  const seen = new Set<string>();
+
+  for (const instruction of instructions ?? []) {
+    for (const entry of instruction.entries ?? []) {
+      const results = collectTweetResultsFromEntry(entry);
+      for (const result of results) {
+        const mapped = mapTweetResult(result, { quoteDepth, includeRaw });
+        if (!mapped || seen.has(mapped.id)) {
+          continue;
+        }
+        seen.add(mapped.id);
+        tweets.push(mapped);
+      }
+    }
+  }
+
+  return tweets;
+}
+
+export function extractCursorFromInstructions(
+  instructions:
+    | Array<{
+        entries?: Array<{
+          content?: unknown;
+        }>;
+      }>
+    | undefined,
+  cursorType = 'Bottom',
+): string | undefined {
+  for (const instruction of instructions ?? []) {
+    for (const entry of instruction.entries ?? []) {
+      const content = entry.content as { cursorType?: unknown; value?: unknown } | undefined;
+      if (content?.cursorType === cursorType && typeof content.value === 'string' && content.value.length > 0) {
+        return content.value;
+      }
+    }
+  }
+  return undefined;
+}
+
+export function parseUsersFromInstructions(
+  instructions: Array<{ type?: string; entries?: Array<unknown> }> | undefined,
+): TwitterUser[] {
+  if (!instructions) {
+    return [];
+  }
+
+  const users: TwitterUser[] = [];
+
+  for (const instruction of instructions) {
+    if (!instruction.entries) {
+      continue;
+    }
+
+    for (const entry of instruction.entries) {
+      const content = (entry as { content?: { itemContent?: { user_results?: { result?: unknown } } } })?.content;
+      const rawUserResult = content?.itemContent?.user_results?.result as
+        | {
+            __typename?: string;
+            rest_id?: string;
+            is_blue_verified?: boolean;
+            user?: unknown;
+            legacy?: {
+              screen_name?: string;
+              name?: string;
+              description?: string;
+              followers_count?: number;
+              friends_count?: number;
+              profile_image_url_https?: string;
+              created_at?: string;
+            };
+            core?: {
+              screen_name?: string;
+              name?: string;
+              created_at?: string;
+            };
+            avatar?: {
+              image_url?: string;
+            };
+          }
+        | undefined;
+
+      const userResult =
+        rawUserResult?.__typename === 'UserWithVisibilityResults' && rawUserResult.user
+          ? (rawUserResult.user as typeof rawUserResult)
+          : rawUserResult;
+
+      if (!userResult || userResult.__typename !== 'User') {
+        continue;
+      }
+
+      const legacy = userResult.legacy;
+      const core = userResult.core;
+      const username = legacy?.screen_name ?? core?.screen_name;
+      if (!userResult.rest_id || !username) {
+        continue;
+      }
+
+      users.push({
+        id: userResult.rest_id,
+        username,
+        name: legacy?.name ?? core?.name ?? username,
+        description: legacy?.description,
+        followersCount: legacy?.followers_count,
+        followingCount: legacy?.friends_count,
+        isBlueVerified: userResult.is_blue_verified,
+        profileImageUrl: legacy?.profile_image_url_https ?? userResult.avatar?.image_url,
+        createdAt: legacy?.created_at ?? core?.created_at,
+      });
+    }
+  }
+
+  return users;
+}

src/lib/version.ts

@@ -5,6 +5,9 @@ import { fileURLToPath } from 'node:url';
 declare const __dirname: string | undefined;
 
 export const FALLBACK_VERSION = 'unknown';
+const REF_PREFIX_REGEX = /^ref:\s*/i;
+const LINE_SPLIT_REGEX = /\r?\n/;
+const GITDIR_REGEX = /gitdir:\s*(.+)\s*$/i;
 
 function readPackageVersionFromJsonFile(candidate: string): string | null {
   try {
@@ -37,7 +40,9 @@ function resolveStartDir(importMetaUrl?: string): string {
     }
   }
 
-  if (typeof __dirname === 'string' && __dirname.length > 0) return __dirname;
+  if (typeof __dirname === 'string' && __dirname.length > 0) {
+    return __dirname;
+  }
 
   return process.cwd();
 }
@@ -47,27 +52,37 @@ export function resolvePackageVersion(importMetaUrl?: string): string {
     typeof process !== 'undefined' && typeof process.env.BIRD_VERSION === 'string'
       ? process.env.BIRD_VERSION.trim()
       : '';
-  if (injected.length > 0) return injected;
+  if (injected.length > 0) {
+    return injected;
+  }
 
   let dir = resolveStartDir(importMetaUrl);
   for (let i = 0; i < 10; i += 1) {
     const version =
       readPackageVersionFromJsonFile(path.join(dir, 'package.json')) ??
       readVersionFromTextFile(path.join(dir, 'VERSION'));
-    if (version) return version;
+    if (version) {
+      return version;
+    }
 
     const parent = path.dirname(dir);
-    if (parent === dir) break;
+    if (parent === dir) {
+      break;
+    }
     dir = parent;
   }
 
   return FALLBACK_VERSION;
 }
 
-function truncateSha(sha: string, length = 8): string {
+function truncateSha(sha: string, length: number = 8): string {
   const trimmed = sha.trim();
-  if (!trimmed) return '';
-  if (trimmed.length <= length) return trimmed;
+  if (!trimmed) {
+    return '';
+  }
+  if (trimmed.length <= length) {
+    return trimmed;
+  }
   return trimmed.slice(0, length);
 }
 
@@ -80,14 +95,18 @@ function resolveGitShaFromGitDir(gitDir: string): string | null {
     return null;
   }
 
-  if (!head) return null;
+  if (!head) {
+    return null;
+  }
   if (!head.startsWith('ref:')) {
     const sha = truncateSha(head);
     return sha.length > 0 ? sha : null;
   }
 
-  const ref = head.replace(/^ref:\s*/i, '').trim();
-  if (!ref) return null;
+  const ref = head.replace(REF_PREFIX_REGEX, '').trim();
+  if (!ref) {
+    return null;
+  }
 
   const refPath = path.join(gitDir, ref);
   try {
@@ -100,9 +119,11 @@ function resolveGitShaFromGitDir(gitDir: string): string | null {
   const packedRefsPath = path.join(gitDir, 'packed-refs');
   try {
     const packed = fs.readFileSync(packedRefsPath, 'utf8');
-    const lines = packed.split(/\r?\n/);
+    const lines = packed.split(LINE_SPLIT_REGEX);
     for (const line of lines) {
-      if (!line || line.startsWith('#') || line.startsWith('^')) continue;
+      if (!line || line.startsWith('#') || line.startsWith('^')) {
+        continue;
+      }
       const [shaRaw, refName] = line.split(' ');
       if (refName?.trim() === ref) {
         const sha = truncateSha(shaRaw ?? '');
@@ -121,7 +142,9 @@ export function resolveGitSha(importMetaUrl?: string): string | null {
     typeof process !== 'undefined' && typeof process.env.BIRD_GIT_SHA === 'string'
       ? process.env.BIRD_GIT_SHA.trim()
       : '';
-  if (injected.length > 0) return truncateSha(injected);
+  if (injected.length > 0) {
+    return truncateSha(injected);
+  }
 
   let dir = resolveStartDir(importMetaUrl);
   for (let i = 0; i < 10; i += 1) {
@@ -130,15 +153,19 @@ export function resolveGitSha(importMetaUrl?: string): string | null {
       const stat = fs.statSync(dotGit);
       if (stat.isDirectory()) {
         const sha = resolveGitShaFromGitDir(dotGit);
-        if (sha) return sha;
+        if (sha) {
+          return sha;
+        }
       } else if (stat.isFile()) {
         const txt = fs.readFileSync(dotGit, 'utf8');
-        const match = txt.match(/gitdir:\s*(.+)\s*$/i);
+        const match = GITDIR_REGEX.exec(txt);
         const gitDir = match?.[1]?.trim();
         if (gitDir) {
           const resolved = path.isAbsolute(gitDir) ? gitDir : path.resolve(dir, gitDir);
           const sha = resolveGitShaFromGitDir(resolved);
-          if (sha) return sha;
+          if (sha) {
+            return sha;
+          }
         }
       }
     } catch {
@@ -146,7 +173,9 @@ export function resolveGitSha(importMetaUrl?: string): string | null {
     }
 
     const parent = path.dirname(dir);
-    if (parent === dir) break;
+    if (parent === dir) {
+      break;
+    }
     dir = parent;
   }
 

tests/cli-args.test.ts

@@ -11,6 +11,10 @@ describe('cli-args', () => {
     'thread',
     'search',
     'mentions',
+    'bookmarks',
+    'following',
+    'followers',
+    'likes',
     'help',
     'whoami',
     'check',

tests/cli.test.ts

@@ -1,4 +1,6 @@
 import { describe, expect, it } from 'vitest';
+import { extractBookmarkFolderId } from '../src/lib/extract-bookmark-folder-id.js';
+import { extractListId } from '../src/lib/extract-list-id.js';
 import { extractTweetId } from '../src/lib/extract-tweet-id.js';
 
 describe('CLI utilities', () => {
@@ -18,6 +20,11 @@ describe('CLI utilities', () => {
       expect(extractTweetId(url)).toBe('1234567890123456789');
     });
 
+    it('should extract ID from i/web/status URLs', () => {
+      const url = 'https://x.com/i/web/status/1234567890123456789';
+      expect(extractTweetId(url)).toBe('1234567890123456789');
+    });
+
     it('should return ID as-is if already an ID', () => {
       const id = '1234567890123456789';
       expect(extractTweetId(id)).toBe('1234567890123456789');
@@ -29,4 +36,81 @@ describe('CLI utilities', () => {
       expect(extractTweetId(url)).toBe('1234567890123456789');
     });
   });
+
+  describe('extractBookmarkFolderId', () => {
+    it('should extract ID from x.com bookmarks URL', () => {
+      const url = 'https://x.com/i/bookmarks/1976792203235119344';
+      expect(extractBookmarkFolderId(url)).toBe('1976792203235119344');
+    });
+
+    it('should extract ID from twitter.com bookmarks URL', () => {
+      const url = 'https://twitter.com/i/bookmarks/1976792203235119344';
+      expect(extractBookmarkFolderId(url)).toBe('1976792203235119344');
+    });
+
+    it('should accept a numeric ID as-is', () => {
+      const id = '1976792203235119344';
+      expect(extractBookmarkFolderId(id)).toBe('1976792203235119344');
+    });
+
+    it('should return null for invalid values', () => {
+      expect(extractBookmarkFolderId('not-an-id')).toBeNull();
+    });
+
+    it('should return null for folder_id query URLs', () => {
+      const url = 'https://x.com/i/bookmarks?folder_id=1976792203235119344';
+      expect(extractBookmarkFolderId(url)).toBeNull();
+    });
+  });
+
+  describe('extractListId', () => {
+    it('should extract ID from x.com list URL', () => {
+      const url = 'https://x.com/i/lists/1234567890123456789';
+      expect(extractListId(url)).toBe('1234567890123456789');
+    });
+
+    it('should extract ID from twitter.com list URL', () => {
+      const url = 'https://twitter.com/i/lists/1234567890123456789';
+      expect(extractListId(url)).toBe('1234567890123456789');
+    });
+
+    it('should extract ID from URL with query params', () => {
+      const url = 'https://x.com/i/lists/1234567890123456789?s=20';
+      expect(extractListId(url)).toBe('1234567890123456789');
+    });
+
+    it('should accept a numeric ID as-is', () => {
+      const id = '1234567890123456789';
+      expect(extractListId(id)).toBe('1234567890123456789');
+    });
+
+    it('should return null for invalid values', () => {
+      expect(extractListId('not-an-id')).toBeNull();
+    });
+
+    it('should return null for empty string', () => {
+      expect(extractListId('')).toBeNull();
+    });
+
+    it('should return null for whitespace-only string', () => {
+      expect(extractListId('   ')).toBeNull();
+    });
+
+    it('should return null for short numeric IDs', () => {
+      expect(extractListId('1234')).toBeNull();
+    });
+
+    it('should accept minimum 5-digit IDs', () => {
+      expect(extractListId('12345')).toBe('12345');
+    });
+
+    it('should trim whitespace from input', () => {
+      expect(extractListId('  1234567890123456789  ')).toBe('1234567890123456789');
+    });
+
+    it('should extract ID from URL with fragment', () => {
+      const url = 'https://x.com/i/lists/1234567890123456789#section';
+      expect(extractListId(url)).toBe('1234567890123456789');
+    });
+  });
 });

tests/commands.bookmarks.test.ts

@@ -0,0 +1,33 @@
+import { Command } from 'commander';
+import { describe, expect, it, vi } from 'vitest';
+import type { CliContext } from '../src/cli/shared.js';
+import { registerBookmarksCommand } from '../src/commands/bookmarks.js';
+
+describe('bookmarks command', () => {
+  it('requires --all or --cursor when --max-pages is provided', async () => {
+    const program = new Command();
+    const ctx = {
+      resolveTimeoutFromOptions: () => undefined,
+      resolveCredentialsFromOptions: async () => ({
+        cookies: { authToken: 'auth', ct0: 'ct0', cookieHeader: 'auth=auth; ct0=ct0' },
+        warnings: [],
+      }),
+      p: () => '',
+      printTweets: () => undefined,
+    } as unknown as CliContext;
+
+    registerBookmarksCommand(program, ctx);
+    const exitSpy = vi.spyOn(process, 'exit').mockImplementation(((code?: number) => {
+      throw new Error(`exit ${code}`);
+    }) as never);
+    const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+
+    try {
+      await expect(program.parseAsync(['node', 'bird', 'bookmarks', '--max-pages', '2'])).rejects.toThrow('exit 1');
+      expect(errorSpy).toHaveBeenCalledWith(expect.stringContaining('--max-pages requires --all or --cursor'));
+    } finally {
+      exitSpy.mockRestore();
+      errorSpy.mockRestore();
+    }
+  });
+});

tests/commands.news.test.ts

@@ -0,0 +1,187 @@
+import { Command } from 'commander';
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+import type { CliContext } from '../src/cli/shared.js';
+import { registerNewsCommand } from '../src/commands/news.js';
+import { TwitterClient } from '../src/lib/twitter-client.js';
+
+describe('news command', () => {
+  let program: Command;
+  let mockContext: Partial<CliContext>;
+
+  beforeEach(() => {
+    program = new Command();
+    mockContext = {
+      resolveTimeoutFromOptions: () => 30000,
+      resolveQuoteDepthFromOptions: () => undefined,
+      resolveCredentialsFromOptions: async () => ({
+        cookies: {
+          authToken: 'auth',
+          ct0: 'ct0',
+          cookieHeader: 'auth=auth; ct0=ct0',
+        },
+        warnings: [],
+      }),
+      p: (type: string) => `[${type}] `,
+      colors: {
+        accent: (text: string) => text,
+        command: (text: string) => text,
+        muted: (text: string) => text,
+        section: (text: string) => text,
+      },
+      l: (key: string) => key,
+    };
+  });
+
+  it('requires positive count value', async () => {
+    registerNewsCommand(program, mockContext as CliContext);
+    const exitSpy = vi.spyOn(process, 'exit').mockImplementation(((code?: number) => {
+      throw new Error(`exit ${code}`);
+    }) as never);
+    const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+
+    try {
+      await expect(program.parseAsync(['node', 'bird', 'news', '--count', '0'])).rejects.toThrow('exit 1');
+      expect(errorSpy).toHaveBeenCalledWith(expect.stringContaining('--count must be a positive number'));
+    } finally {
+      exitSpy.mockRestore();
+      errorSpy.mockRestore();
+    }
+  });
+
+  it('rejects negative count value', async () => {
+    registerNewsCommand(program, mockContext as CliContext);
+    const exitSpy = vi.spyOn(process, 'exit').mockImplementation(((code?: number) => {
+      throw new Error(`exit ${code}`);
+    }) as never);
+    const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+
+    try {
+      await expect(program.parseAsync(['node', 'bird', 'news', '--count', '-5'])).rejects.toThrow('exit 1');
+      expect(errorSpy).toHaveBeenCalledWith(expect.stringContaining('--count must be a positive number'));
+    } finally {
+      exitSpy.mockRestore();
+      errorSpy.mockRestore();
+    }
+  });
+
+  it('rejects non-numeric count value', async () => {
+    registerNewsCommand(program, mockContext as CliContext);
+    const exitSpy = vi.spyOn(process, 'exit').mockImplementation(((code?: number) => {
+      throw new Error(`exit ${code}`);
+    }) as never);
+    const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+
+    try {
+      await expect(program.parseAsync(['node', 'bird', 'news', '--count', 'abc'])).rejects.toThrow('exit 1');
+      expect(errorSpy).toHaveBeenCalledWith(expect.stringContaining('--count must be a positive number'));
+    } finally {
+      exitSpy.mockRestore();
+      errorSpy.mockRestore();
+    }
+  });
+
+  it('requires positive tweets-per-item value', async () => {
+    registerNewsCommand(program, mockContext as CliContext);
+    const exitSpy = vi.spyOn(process, 'exit').mockImplementation(((code?: number) => {
+      throw new Error(`exit ${code}`);
+    }) as never);
+    const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+
+    try {
+      await expect(program.parseAsync(['node', 'bird', 'news', '--tweets-per-item', '0'])).rejects.toThrow('exit 1');
+      expect(errorSpy).toHaveBeenCalledWith(expect.stringContaining('--tweets-per-item must be a positive number'));
+    } finally {
+      exitSpy.mockRestore();
+      errorSpy.mockRestore();
+    }
+  });
+
+  it('rejects negative tweets-per-item value', async () => {
+    registerNewsCommand(program, mockContext as CliContext);
+    const exitSpy = vi.spyOn(process, 'exit').mockImplementation(((code?: number) => {
+      throw new Error(`exit ${code}`);
+    }) as never);
+    const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+
+    try {
+      await expect(program.parseAsync(['node', 'bird', 'news', '--tweets-per-item', '-3'])).rejects.toThrow('exit 1');
+      expect(errorSpy).toHaveBeenCalledWith(expect.stringContaining('--tweets-per-item must be a positive number'));
+    } finally {
+      exitSpy.mockRestore();
+      errorSpy.mockRestore();
+    }
+  });
+
+  it('rejects non-numeric tweets-per-item value', async () => {
+    registerNewsCommand(program, mockContext as CliContext);
+    const exitSpy = vi.spyOn(process, 'exit').mockImplementation(((code?: number) => {
+      throw new Error(`exit ${code}`);
+    }) as never);
+    const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+
+    try {
+      await expect(program.parseAsync(['node', 'bird', 'news', '--tweets-per-item', 'xyz'])).rejects.toThrow('exit 1');
+      expect(errorSpy).toHaveBeenCalledWith(expect.stringContaining('--tweets-per-item must be a positive number'));
+    } finally {
+      exitSpy.mockRestore();
+      errorSpy.mockRestore();
+    }
+  });
+
+  it('requires both authToken and ct0 credentials', async () => {
+    mockContext.resolveCredentialsFromOptions = async () => ({
+      cookies: {
+        authToken: '',
+        ct0: '',
+        cookieHeader: '',
+      },
+      warnings: [],
+    });
+
+    registerNewsCommand(program, mockContext as CliContext);
+    const exitSpy = vi.spyOn(process, 'exit').mockImplementation(((code?: number) => {
+      throw new Error(`exit ${code}`);
+    }) as never);
+    const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+
+    try {
+      await expect(program.parseAsync(['node', 'bird', 'news'])).rejects.toThrow('exit 1');
+      expect(errorSpy).toHaveBeenCalledWith(expect.stringContaining('Missing required credentials'));
+    } finally {
+      exitSpy.mockRestore();
+      errorSpy.mockRestore();
+    }
+  });
+
+  it('limits related tweets to tweets-per-item in CLI output', async () => {
+    registerNewsCommand(program, mockContext as CliContext);
+    const getNewsSpy = vi.spyOn(TwitterClient.prototype, 'getNews').mockResolvedValue({
+      success: true,
+      items: [
+        {
+          id: 'item-1',
+          headline: 'News headline',
+          category: 'News',
+          tweets: [
+            { id: 't1', text: 'first tweet', author: { username: 'a', name: 'A' } },
+            { id: 't2', text: 'second tweet', author: { username: 'b', name: 'B' } },
+            { id: 't3', text: 'third tweet', author: { username: 'c', name: 'C' } },
+          ],
+        },
+      ],
+    });
+    const logSpy = vi.spyOn(console, 'log').mockImplementation(() => undefined);
+
+    try {
+      await program.parseAsync(['node', 'bird', 'news', '--with-tweets', '--tweets-per-item', '2', '--count', '1']);
+      expect(getNewsSpy).toHaveBeenCalledWith(1, expect.objectContaining({ tweetsPerItem: 2, withTweets: true }));
+      const tweetLines = logSpy.mock.calls
+        .map((call) => String(call[0]))
+        .filter((line) => line.trimStart().startsWith('@'));
+      expect(tweetLines).toHaveLength(2);
+    } finally {
+      getNewsSpy.mockRestore();
+      logSpy.mockRestore();
+    }
+  });
+});

tests/commands.read.test.ts

@@ -0,0 +1,155 @@
+import { Command } from 'commander';
+import { describe, expect, it, vi } from 'vitest';
+import type { CliContext } from '../src/cli/shared.js';
+import { registerReadCommands } from '../src/commands/read.js';
+import { TwitterClient } from '../src/lib/twitter-client.js';
+
+describe('replies command', () => {
+  const createMockContext = () =>
+    ({
+      resolveTimeoutFromOptions: () => undefined,
+      resolveQuoteDepthFromOptions: () => 1,
+      extractTweetId: (input: string) => input,
+      resolveCredentialsFromOptions: async () => ({
+        cookies: { authToken: 'auth', ct0: 'ct0', cookieHeader: 'auth=auth; ct0=ct0' },
+        warnings: [],
+      }),
+      p: () => '',
+      printTweets: () => undefined,
+      printTweetsResult: () => undefined,
+    }) as unknown as CliContext;
+
+  it('uses pagination when --max-pages is provided', async () => {
+    const program = new Command();
+    registerReadCommands(program, createMockContext());
+
+    const pagedSpy = vi
+      .spyOn(TwitterClient.prototype, 'getRepliesPaged')
+      .mockResolvedValue({ success: true, tweets: [], nextCursor: undefined });
+    const unpagedSpy = vi.spyOn(TwitterClient.prototype, 'getReplies').mockResolvedValue({ success: true, tweets: [] });
+
+    try {
+      await program.parseAsync(['node', 'bird', 'replies', '123', '--max-pages', '2', '--json']);
+      expect(pagedSpy).toHaveBeenCalledTimes(1);
+      expect(unpagedSpy).toHaveBeenCalledTimes(0);
+    } finally {
+      pagedSpy.mockRestore();
+      unpagedSpy.mockRestore();
+    }
+  });
+
+  it('validates --max-pages is a positive integer', async () => {
+    const program = new Command();
+    registerReadCommands(program, createMockContext());
+
+    const exitSpy = vi.spyOn(process, 'exit').mockImplementation(((code?: number) => {
+      throw new Error(`exit ${code}`);
+    }) as never);
+    const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+
+    try {
+      await expect(
+        program.parseAsync(['node', 'bird', 'replies', '123', '--all', '--max-pages', '-1']),
+      ).rejects.toThrow('exit 1');
+      expect(errorSpy).toHaveBeenCalledWith(expect.stringContaining('Invalid --max-pages'));
+    } finally {
+      exitSpy.mockRestore();
+      errorSpy.mockRestore();
+    }
+  });
+
+  it('validates --delay is a non-negative integer', async () => {
+    const program = new Command();
+    registerReadCommands(program, createMockContext());
+
+    const exitSpy = vi.spyOn(process, 'exit').mockImplementation(((code?: number) => {
+      throw new Error(`exit ${code}`);
+    }) as never);
+    const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+
+    try {
+      await expect(program.parseAsync(['node', 'bird', 'replies', '123', '--all', '--delay', '-100'])).rejects.toThrow(
+        'exit 1',
+      );
+      expect(errorSpy).toHaveBeenCalledWith(expect.stringContaining('Invalid --delay'));
+    } finally {
+      exitSpy.mockRestore();
+      errorSpy.mockRestore();
+    }
+  });
+});
+
+describe('thread command', () => {
+  const createMockContext = () =>
+    ({
+      resolveTimeoutFromOptions: () => undefined,
+      resolveQuoteDepthFromOptions: () => 1,
+      extractTweetId: (input: string) => input,
+      resolveCredentialsFromOptions: async () => ({
+        cookies: { authToken: 'auth', ct0: 'ct0', cookieHeader: 'auth=auth; ct0=ct0' },
+        warnings: [],
+      }),
+      p: () => '',
+      printTweets: () => undefined,
+      printTweetsResult: () => undefined,
+    }) as unknown as CliContext;
+
+  it('uses pagination when --max-pages is provided', async () => {
+    const program = new Command();
+    registerReadCommands(program, createMockContext());
+
+    const pagedSpy = vi
+      .spyOn(TwitterClient.prototype, 'getThreadPaged')
+      .mockResolvedValue({ success: true, tweets: [], nextCursor: undefined });
+    const unpagedSpy = vi.spyOn(TwitterClient.prototype, 'getThread').mockResolvedValue({ success: true, tweets: [] });
+
+    try {
+      await program.parseAsync(['node', 'bird', 'thread', '123', '--max-pages', '2', '--json']);
+      expect(pagedSpy).toHaveBeenCalledTimes(1);
+      expect(unpagedSpy).toHaveBeenCalledTimes(0);
+    } finally {
+      pagedSpy.mockRestore();
+      unpagedSpy.mockRestore();
+    }
+  });
+
+  it('validates --max-pages is a positive integer', async () => {
+    const program = new Command();
+    registerReadCommands(program, createMockContext());
+
+    const exitSpy = vi.spyOn(process, 'exit').mockImplementation(((code?: number) => {
+      throw new Error(`exit ${code}`);
+    }) as never);
+    const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+
+    try {
+      await expect(program.parseAsync(['node', 'bird', 'thread', '123', '--all', '--max-pages', '0'])).rejects.toThrow(
+        'exit 1',
+      );
+      expect(errorSpy).toHaveBeenCalledWith(expect.stringContaining('Invalid --max-pages'));
+    } finally {
+      exitSpy.mockRestore();
+      errorSpy.mockRestore();
+    }
+  });
+
+  it('validates --delay is a non-negative integer', async () => {
+    const program = new Command();
+    registerReadCommands(program, createMockContext());
+
+    const exitSpy = vi.spyOn(process, 'exit').mockImplementation(((code?: number) => {
+      throw new Error(`exit ${code}`);
+    }) as never);
+    const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+
+    try {
+      await expect(program.parseAsync(['node', 'bird', 'thread', '123', '--all', '--delay', 'abc'])).rejects.toThrow(
+        'exit 1',
+      );
+      expect(errorSpy).toHaveBeenCalledWith(expect.stringContaining('Invalid --delay'));
+    } finally {
+      exitSpy.mockRestore();
+      errorSpy.mockRestore();
+    }
+  });
+});

tests/commands.search.test.ts

@@ -0,0 +1,119 @@
+import { Command } from 'commander';
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+import type { CliContext } from '../src/cli/shared.js';
+import { registerSearchCommands } from '../src/commands/search.js';
+import { TwitterClient } from '../src/lib/twitter-client.js';
+
+describe('search command', () => {
+  let program: Command;
+  let mockContext: Partial<CliContext>;
+
+  beforeEach(() => {
+    program = new Command();
+    mockContext = {
+      resolveTimeoutFromOptions: () => undefined,
+      resolveQuoteDepthFromOptions: () => undefined,
+      resolveCredentialsFromOptions: async () => ({
+        cookies: { authToken: 'auth', ct0: 'ct0', cookieHeader: 'auth=auth; ct0=ct0' },
+        warnings: [],
+      }),
+      p: () => '',
+      printTweetsResult: vi.fn(),
+    };
+  });
+
+  it('requires --all or --cursor when --max-pages is provided', async () => {
+    registerSearchCommands(program, mockContext as CliContext);
+    const exitSpy = vi.spyOn(process, 'exit').mockImplementation(((code?: number) => {
+      throw new Error(`exit ${code}`);
+    }) as never);
+    const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+
+    try {
+      await expect(program.parseAsync(['node', 'bird', 'search', 'cats', '--max-pages', '2'])).rejects.toThrow(
+        'exit 1',
+      );
+      expect(errorSpy).toHaveBeenCalledWith(expect.stringContaining('--max-pages requires --all or --cursor'));
+    } finally {
+      exitSpy.mockRestore();
+      errorSpy.mockRestore();
+    }
+  });
+
+  it('requires positive --count when not paging', async () => {
+    registerSearchCommands(program, mockContext as CliContext);
+    const exitSpy = vi.spyOn(process, 'exit').mockImplementation(((code?: number) => {
+      throw new Error(`exit ${code}`);
+    }) as never);
+    const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+
+    try {
+      await expect(program.parseAsync(['node', 'bird', 'search', 'cats', '--count', '0'])).rejects.toThrow('exit 1');
+      expect(errorSpy).toHaveBeenCalledWith(expect.stringContaining('Invalid --count. Expected a positive integer.'));
+    } finally {
+      exitSpy.mockRestore();
+      errorSpy.mockRestore();
+    }
+  });
+
+  it('requires positive --max-pages when paging', async () => {
+    registerSearchCommands(program, mockContext as CliContext);
+    const exitSpy = vi.spyOn(process, 'exit').mockImplementation(((code?: number) => {
+      throw new Error(`exit ${code}`);
+    }) as never);
+    const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+
+    try {
+      await expect(program.parseAsync(['node', 'bird', 'search', 'cats', '--all', '--max-pages', '0'])).rejects.toThrow(
+        'exit 1',
+      );
+      expect(errorSpy).toHaveBeenCalledWith(
+        expect.stringContaining('Invalid --max-pages. Expected a positive integer.'),
+      );
+    } finally {
+      exitSpy.mockRestore();
+      errorSpy.mockRestore();
+    }
+  });
+
+  it('uses paged search when --all is set', async () => {
+    registerSearchCommands(program, mockContext as CliContext);
+    const getAllSpy = vi
+      .spyOn(TwitterClient.prototype, 'getAllSearchResults')
+      .mockResolvedValue({ success: true, tweets: [] });
+    const searchSpy = vi.spyOn(TwitterClient.prototype, 'search').mockResolvedValue({ success: true, tweets: [] });
+
+    try {
+      await program.parseAsync(['node', 'bird', 'search', 'cats', '--all', '--json']);
+      expect(getAllSpy).toHaveBeenCalledWith('cats', expect.objectContaining({ includeRaw: false }));
+      expect(searchSpy).not.toHaveBeenCalled();
+      expect(mockContext.printTweetsResult).toHaveBeenCalledWith(expect.objectContaining({ tweets: [] }), {
+        json: true,
+        usePagination: true,
+        emptyMessage: 'No tweets found.',
+      });
+    } finally {
+      getAllSpy.mockRestore();
+      searchSpy.mockRestore();
+    }
+  });
+
+  it('uses cursor pagination when --cursor is set', async () => {
+    registerSearchCommands(program, mockContext as CliContext);
+    const getAllSpy = vi
+      .spyOn(TwitterClient.prototype, 'getAllSearchResults')
+      .mockResolvedValue({ success: true, tweets: [] });
+
+    try {
+      await program.parseAsync(['node', 'bird', 'search', 'cats', '--cursor', 'cursor-1']);
+      expect(getAllSpy).toHaveBeenCalledWith('cats', expect.objectContaining({ cursor: 'cursor-1' }));
+      expect(mockContext.printTweetsResult).toHaveBeenCalledWith(expect.objectContaining({ tweets: [] }), {
+        json: false,
+        usePagination: true,
+        emptyMessage: 'No tweets found.',
+      });
+    } finally {
+      getAllSpy.mockRestore();
+    }
+  });
+});

tests/commands.users.test.ts

@@ -0,0 +1,214 @@
+import { Command } from 'commander';
+import { afterEach, describe, expect, it, vi } from 'vitest';
+import type { CliContext } from '../src/cli/shared.js';
+import { registerUserCommands } from '../src/commands/users.js';
+import { TwitterClient } from '../src/lib/twitter-client.js';
+
+const baseCtx = {
+  resolveTimeoutFromOptions: () => undefined,
+  resolveCredentialsFromOptions: async () => ({
+    cookies: { authToken: 'auth', ct0: 'ct0', cookieHeader: 'auth=auth; ct0=ct0' },
+    warnings: [],
+  }),
+  p: () => '',
+  printTweets: () => undefined,
+} as unknown as CliContext;
+
+afterEach(() => {
+  vi.restoreAllMocks();
+  vi.useRealTimers();
+});
+
+describe('users commands', () => {
+  it('requires --all when --max-pages is provided', async () => {
+    const program = new Command();
+    registerUserCommands(program, baseCtx);
+    const exitSpy = vi.spyOn(process, 'exit').mockImplementation(((code?: number) => {
+      throw new Error(`exit ${code}`);
+    }) as never);
+    const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+
+    try {
+      await expect(program.parseAsync(['node', 'bird', 'following', '--max-pages', '2'])).rejects.toThrow('exit 1');
+      expect(errorSpy).toHaveBeenCalledWith(expect.stringContaining('--max-pages requires --all.'));
+    } finally {
+      exitSpy.mockRestore();
+      errorSpy.mockRestore();
+    }
+  });
+
+  it('rejects --max-pages when only --cursor is provided', async () => {
+    const program = new Command();
+    registerUserCommands(program, baseCtx);
+    const exitSpy = vi.spyOn(process, 'exit').mockImplementation(((code?: number) => {
+      throw new Error(`exit ${code}`);
+    }) as never);
+    const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+
+    try {
+      await expect(
+        program.parseAsync(['node', 'bird', 'following', '--cursor', 'prev', '--max-pages', '2']),
+      ).rejects.toThrow('exit 1');
+      expect(errorSpy).toHaveBeenCalledWith(expect.stringContaining('--max-pages requires --all.'));
+    } finally {
+      exitSpy.mockRestore();
+      errorSpy.mockRestore();
+    }
+  });
+
+  it('emits pagination JSON when --cursor is provided', async () => {
+    const program = new Command();
+    registerUserCommands(program, baseCtx);
+    vi.spyOn(TwitterClient.prototype, 'getCurrentUser').mockResolvedValue({
+      success: true,
+      user: { id: '123', username: 'tester', name: 'Tester' },
+    });
+    vi.spyOn(TwitterClient.prototype, 'getFollowing').mockResolvedValue({
+      success: true,
+      users: [{ id: '1', username: 'alpha', name: 'Alpha' }],
+      nextCursor: 'next-1',
+    });
+
+    const logSpy = vi.spyOn(console, 'log').mockImplementation(() => undefined);
+    await program.parseAsync(['node', 'bird', 'following', '--cursor', 'prev', '--json']);
+
+    const payload = JSON.parse(String(logSpy.mock.calls[0]?.[0]));
+    expect(payload.users).toHaveLength(1);
+    expect(payload.nextCursor).toBe('next-1');
+  });
+
+  it('prints next cursor in non-JSON single-page mode', async () => {
+    const program = new Command();
+    registerUserCommands(program, baseCtx);
+    vi.spyOn(TwitterClient.prototype, 'getCurrentUser').mockResolvedValue({
+      success: true,
+      user: { id: '123', username: 'tester', name: 'Tester' },
+    });
+    vi.spyOn(TwitterClient.prototype, 'getFollowing').mockResolvedValue({
+      success: true,
+      users: [{ id: '1', username: 'alpha', name: 'Alpha' }],
+      nextCursor: 'next-1',
+    });
+
+    const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+    const logSpy = vi.spyOn(console, 'log').mockImplementation(() => undefined);
+    await program.parseAsync(['node', 'bird', 'following', '--cursor', 'prev']);
+
+    expect(errorSpy).toHaveBeenCalledWith(expect.stringContaining('Next cursor: next-1'));
+    expect(logSpy).toHaveBeenCalled();
+  });
+
+  it('emits pagination JSON for --all results', async () => {
+    const program = new Command();
+    registerUserCommands(program, baseCtx);
+    vi.spyOn(TwitterClient.prototype, 'getCurrentUser').mockResolvedValue({
+      success: true,
+      user: { id: '123', username: 'tester', name: 'Tester' },
+    });
+    vi.spyOn(TwitterClient.prototype, 'getFollowing').mockResolvedValue({
+      success: true,
+      users: [{ id: '1', username: 'alpha', name: 'Alpha' }],
+      nextCursor: 'next-1',
+    });
+
+    const logSpy = vi.spyOn(console, 'log').mockImplementation(() => undefined);
+    await program.parseAsync(['node', 'bird', 'following', '--all', '--max-pages', '1', '--json']);
+
+    const payload = JSON.parse(String(logSpy.mock.calls[0]?.[0]));
+    expect(payload.users).toHaveLength(1);
+    expect(payload.nextCursor).toBe('next-1');
+  });
+
+  it('prints next cursor when stopping at max pages in non-JSON mode', async () => {
+    vi.useFakeTimers();
+    const program = new Command();
+    registerUserCommands(program, baseCtx);
+    vi.spyOn(TwitterClient.prototype, 'getCurrentUser').mockResolvedValue({
+      success: true,
+      user: { id: '123', username: 'tester', name: 'Tester' },
+    });
+    vi.spyOn(TwitterClient.prototype, 'getFollowing').mockResolvedValue({
+      success: true,
+      users: [{ id: '1', username: 'alpha', name: 'Alpha' }],
+      nextCursor: 'next-1',
+    });
+
+    const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+    const logSpy = vi.spyOn(console, 'log').mockImplementation(() => undefined);
+    const run = program.parseAsync(['node', 'bird', 'following', '--all', '--max-pages', '1']);
+    await vi.advanceTimersByTimeAsync(1000);
+    await run;
+
+    expect(errorSpy).toHaveBeenCalledWith(expect.stringContaining('Next cursor: next-1'));
+    expect(logSpy).toHaveBeenCalled();
+  });
+
+  it('deduplicates users across pages in --all mode', async () => {
+    vi.useFakeTimers();
+    const program = new Command();
+    registerUserCommands(program, baseCtx);
+    vi.spyOn(TwitterClient.prototype, 'getCurrentUser').mockResolvedValue({
+      success: true,
+      user: { id: '123', username: 'tester', name: 'Tester' },
+    });
+    const followingSpy = vi.spyOn(TwitterClient.prototype, 'getFollowing');
+    followingSpy
+      .mockResolvedValueOnce({
+        success: true,
+        users: [
+          { id: '1', username: 'alpha', name: 'Alpha' },
+          { id: '2', username: 'beta', name: 'Beta' },
+        ],
+        nextCursor: 'cursor-1',
+      })
+      .mockResolvedValueOnce({
+        success: true,
+        users: [
+          { id: '2', username: 'beta', name: 'Beta' },
+          { id: '3', username: 'gamma', name: 'Gamma' },
+        ],
+        nextCursor: undefined,
+      });
+
+    const logSpy = vi.spyOn(console, 'log').mockImplementation(() => undefined);
+    const run = program.parseAsync(['node', 'bird', 'following', '--all', '--json']);
+    await vi.advanceTimersByTimeAsync(1000);
+    await run;
+
+    const payload = JSON.parse(String(logSpy.mock.calls[0]?.[0]));
+    expect(payload.users).toHaveLength(3);
+    expect(payload.users.map((user: { id: string }) => user.id)).toEqual(['1', '2', '3']);
+  });
+
+  it('stops pagination when cursor repeats or no new users are added', async () => {
+    vi.useFakeTimers();
+    const program = new Command();
+    registerUserCommands(program, baseCtx);
+    vi.spyOn(TwitterClient.prototype, 'getCurrentUser').mockResolvedValue({
+      success: true,
+      user: { id: '123', username: 'tester', name: 'Tester' },
+    });
+    const followingSpy = vi.spyOn(TwitterClient.prototype, 'getFollowing');
+    followingSpy
+      .mockResolvedValueOnce({
+        success: true,
+        users: [{ id: '1', username: 'alpha', name: 'Alpha' }],
+        nextCursor: 'cursor-1',
+      })
+      .mockResolvedValueOnce({
+        success: true,
+        users: [{ id: '1', username: 'alpha', name: 'Alpha' }],
+        nextCursor: 'cursor-1',
+      });
+
+    const logSpy = vi.spyOn(console, 'log').mockImplementation(() => undefined);
+    const run = program.parseAsync(['node', 'bird', 'following', '--all', '--json']);
+    await vi.advanceTimersByTimeAsync(1000);
+    await run;
+
+    const payload = JSON.parse(String(logSpy.mock.calls[0]?.[0]));
+    expect(payload.users).toHaveLength(1);
+    expect(payload.nextCursor).toBeNull();
+    expect(followingSpy).toHaveBeenCalledTimes(2);
+  });
+});

tests/cookies.test.ts

@@ -1,98 +1,33 @@
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
 
-// Mock child_process.execSync to prevent actual shell commands
-vi.mock('node:child_process', () => ({
-  execSync: vi.fn(() => ''),
+type SweetCookieResult = { cookies: Array<{ name: string; value: string; domain?: string }>; warnings: string[] };
+
+const sweet = vi.hoisted(() => ({
+  results: new Map<string, SweetCookieResult>(),
+  options: new Map<string, { timeoutMs?: number }>(),
 }));
 
-// Mock fs to prevent actual file operations
-vi.mock('node:fs', () => {
-  const fs = vi.importActual<typeof import('node:fs')>('node:fs');
-  return {
-    ...fs,
-    existsSync: vi.fn(() => false),
-    copyFileSync: vi.fn(),
-    mkdtempSync: vi.fn(() => '/tmp/test-dir'),
-    readdirSync: vi.fn(() => []),
-    readFileSync: vi.fn(() => Buffer.alloc(0)),
-    rmSync: vi.fn(),
-  };
-});
-
-const itIfDarwin = process.platform === 'darwin' ? it : it.skip;
-
-function buildSafariCookieRecord(input: { domain: string; name: string; value: string; path?: string }): Buffer {
-  const domain = Buffer.from(input.domain, 'utf8');
-  const name = Buffer.from(input.name, 'utf8');
-  const path = Buffer.from(input.path ?? '/', 'utf8');
-  const value = Buffer.from(input.value, 'utf8');
-
-  const headerSize = 56;
-  const domainOffset = headerSize;
-  const nameOffset = domainOffset + domain.length + 1;
-  const pathOffset = nameOffset + name.length + 1;
-  const valueOffset = pathOffset + path.length + 1;
-  const recordSize = valueOffset + value.length + 1;
-
-  const record = Buffer.alloc(recordSize);
-  record.writeUInt32LE(recordSize, 0);
-  record.writeUInt32LE(0, 4);
-  record.writeUInt32LE(0, 8);
-  record.writeUInt32LE(0, 12);
-  record.writeUInt32LE(domainOffset, 16);
-  record.writeUInt32LE(nameOffset, 20);
-  record.writeUInt32LE(pathOffset, 24);
-  record.writeUInt32LE(valueOffset, 28);
-
-  domain.copy(record, domainOffset);
-  record[domainOffset + domain.length] = 0;
-  name.copy(record, nameOffset);
-  record[nameOffset + name.length] = 0;
-  path.copy(record, pathOffset);
-  record[pathOffset + path.length] = 0;
-  value.copy(record, valueOffset);
-  record[valueOffset + value.length] = 0;
-
-  return record;
-}
-
-function buildSafariCookiesFile(records: Buffer[]): Buffer {
-  const cookieCount = records.length;
-  const headerSize = 4 + 4 + 4 * cookieCount + 4;
-  const offsets: number[] = [];
-  let cursor = headerSize;
-  for (const record of records) {
-    offsets.push(cursor);
-    cursor += record.length;
+vi.mock('@steipete/sweet-cookie', () => ({
+  getCookies: vi.fn(async (options: { browsers?: string[]; timeoutMs?: number }) => {
+    const browser = options.browsers?.[0] ?? 'unknown';
+    sweet.options.set(browser, options);
+    return (
+      sweet.results.get(browser) ?? {
+        cookies: [],
+        warnings: [],
       }
-
-  const pageSize = cursor;
-  const page = Buffer.alloc(pageSize);
-  page.writeUInt32BE(0x00000100, 0);
-  page.writeUInt32LE(cookieCount, 4);
-  offsets.forEach((offset, index) => {
-    page.writeUInt32LE(offset, 8 + index * 4);
-  });
-  page.writeUInt32LE(0, 8 + cookieCount * 4);
-  offsets.forEach((offset, index) => {
-    records[index].copy(page, offset);
-  });
-
-  const header = Buffer.alloc(12);
-  header.write('cook', 0, 'ascii');
-  header.writeUInt32BE(1, 4);
-  header.writeUInt32BE(pageSize, 8);
-
-  return Buffer.concat([header, page]);
-}
+    );
+  }),
+}));
 
 describe('cookies', () => {
   const originalEnv = process.env;
 
   beforeEach(() => {
     vi.resetModules();
+    sweet.results.clear();
+    sweet.options.clear();
     process.env = { ...originalEnv };
-    // Clear Twitter-related env vars
     process.env.AUTH_TOKEN = undefined;
     process.env.TWITTER_AUTH_TOKEN = undefined;
     process.env.CT0 = undefined;
@@ -106,58 +41,44 @@ describe('cookies', () => {
 
   describe('resolveCredentials', () => {
     it('honors cookieSource=firefox even when Safari has cookies', async () => {
+      sweet.results.set('safari', {
+        cookies: [
+          { name: 'auth_token', value: 'safari_auth', domain: 'x.com' },
+          { name: 'ct0', value: 'safari_ct0', domain: 'x.com' },
+        ],
+        warnings: [],
+      });
+      sweet.results.set('firefox', {
+        cookies: [
+          { name: 'auth_token', value: 'firefox_auth', domain: 'x.com' },
+          { name: 'ct0', value: 'firefox_ct0', domain: 'x.com' },
+        ],
+        warnings: [],
+      });
+
       const { resolveCredentials } = await import('../src/lib/cookies.js');
-      const fs = await import('node:fs');
-      const { execSync } = await import('node:child_process');
-
-      // Safari cookie file exists + contains different cookies
-      (fs.existsSync as unknown as vi.Mock).mockImplementation((path: string) => {
-        const lower = path.toLowerCase();
-        if (lower.endsWith('cookies.binarycookies')) return true;
-        if (lower.endsWith('cookies.sqlite')) return true;
-        if (lower.includes('firefox')) return true;
-        return false;
-      });
-      (fs.readdirSync as unknown as vi.Mock).mockReturnValue([
-        { isDirectory: () => true, name: 'abc.default-release' },
-      ]);
-      (fs.copyFileSync as unknown as vi.Mock).mockImplementation(() => {});
-      (fs.readFileSync as unknown as vi.Mock).mockReturnValue(
-        buildSafariCookiesFile([
-          buildSafariCookieRecord({ domain: '.x.com', name: 'auth_token', value: 'safari_auth' }),
-          buildSafariCookieRecord({ domain: '.x.com', name: 'ct0', value: 'safari_ct0' }),
-        ]),
-      );
-
-      // Firefox sqlite3 extraction returns different cookies
-      (execSync as unknown as vi.Mock).mockImplementation((cmd: string) => {
-        if (cmd.includes('sqlite3')) return 'auth_token|firefox_auth\nct0|firefox_ct0';
-        return '';
-      });
-
       const result = await resolveCredentials({ cookieSource: 'firefox' });
+
       expect(result.cookies.authToken).toBe('firefox_auth');
       expect(result.cookies.ct0).toBe('firefox_ct0');
       expect(result.cookies.source).toContain('Firefox');
     });
 
-    itIfDarwin('honors cookieSource=safari', async () => {
+    it('honors cookieSource=safari', async () => {
+      if (process.platform !== 'darwin') {
+        return;
+      }
+      sweet.results.set('safari', {
+        cookies: [
+          { name: 'auth_token', value: 'safari_auth', domain: 'x.com' },
+          { name: 'ct0', value: 'safari_ct0', domain: 'x.com' },
+        ],
+        warnings: [],
+      });
+
       const { resolveCredentials } = await import('../src/lib/cookies.js');
-      const fs = await import('node:fs');
-
-      (fs.existsSync as unknown as vi.Mock).mockImplementation((path: string) =>
-        path.toLowerCase().endsWith('cookies.binarycookies'),
-      );
-      (fs.copyFileSync as unknown as vi.Mock).mockImplementation(() => {});
-      (fs.mkdtempSync as unknown as vi.Mock).mockReturnValue('/tmp/test-dir');
-      (fs.readFileSync as unknown as vi.Mock).mockReturnValue(
-        buildSafariCookiesFile([
-          buildSafariCookieRecord({ domain: '.x.com', name: 'auth_token', value: 'safari_auth' }),
-          buildSafariCookieRecord({ domain: '.x.com', name: 'ct0', value: 'safari_ct0' }),
-        ]),
-      );
-
       const result = await resolveCredentials({ cookieSource: 'safari' });
+
       expect(result.cookies.authToken).toBe('safari_auth');
       expect(result.cookies.ct0).toBe('safari_ct0');
       expect(result.cookies.cookieHeader).toContain('auth_token=safari_auth');
@@ -166,26 +87,15 @@ describe('cookies', () => {
     });
 
     it('uses firefox when enabled and returns cookies', async () => {
-      const { resolveCredentials } = await import('../src/lib/cookies.js');
-      const fs = await import('node:fs');
-
-      // Firefox present with cookies.sqlite
-      (fs.existsSync as unknown as vi.Mock).mockImplementation((path: string) => {
-        const lower = path.toLowerCase();
-        if (lower.endsWith('cookies.sqlite')) return true;
-        if (lower.includes('firefox')) return true;
-        return false;
+      sweet.results.set('firefox', {
+        cookies: [
+          { name: 'auth_token', value: 'firefox_auth', domain: 'x.com' },
+          { name: 'ct0', value: 'firefox_ct0', domain: 'x.com' },
+        ],
+        warnings: [],
       });
-      (fs.readdirSync as unknown as vi.Mock).mockReturnValue([
-        { isDirectory: () => true, name: 'abc.default-release' },
-      ]);
-      (fs.copyFileSync as unknown as vi.Mock).mockImplementation(() => {});
-      (fs.mkdtempSync as unknown as vi.Mock).mockReturnValue('/tmp/test-dir');
-
-      // sqlite3 output for firefox
-      const { execSync } = await import('node:child_process');
-      (execSync as unknown as vi.Mock).mockReturnValue('auth_token|firefox_auth\nct0|firefox_ct0');
 
+      const { resolveCredentials } = await import('../src/lib/cookies.js');
       const result = await resolveCredentials({ cookieSource: 'firefox', firefoxProfile: 'abc.default-release' });
 
       expect(result.cookies.authToken).toBe('firefox_auth');
@@ -270,40 +180,111 @@ describe('cookies', () => {
     });
 
     it('falls back to Chrome when enabled and Firefox disabled', async () => {
-      const fs = await import('node:fs');
-      const { execSync } = await import('node:child_process');
-      (fs.existsSync as unknown as vi.Mock).mockImplementation((path: string) => path.includes('Cookies'));
-      (fs.copyFileSync as unknown as vi.Mock).mockImplementation(() => {});
-      (execSync as unknown as vi.Mock).mockImplementation((cmd: string) => {
-        if (cmd.includes('sqlite3')) {
-          return 'auth_token|746573745f61757468\nct0|746573745f637430';
-        }
-        return '';
+      sweet.results.set('chrome', {
+        cookies: [
+          { name: 'auth_token', value: 'test_auth', domain: 'x.com' },
+          { name: 'ct0', value: 'test_ct0', domain: 'x.com' },
+        ],
+        warnings: [],
       });
 
       const { resolveCredentials } = await import('../src/lib/cookies.js');
-      const result = await resolveCredentials({ cookieSource: 'chrome', chromeProfile: 'Default' });
+      const result = await resolveCredentials({
+        cookieSource: 'chrome',
+        chromeProfile: 'Default',
+        cookieTimeoutMs: 15000,
+      });
 
       expect(result.cookies.authToken).toBe('test_auth');
       expect(result.cookies.ct0).toBe('test_ct0');
       expect(result.cookies.source).toContain('Chrome');
+      expect(sweet.options.get('chrome')?.timeoutMs).toBe(15000);
+    });
+
+    it('defaults to a 30s cookie timeout on macOS', async () => {
+      if (process.platform !== 'darwin') {
+        return;
+      }
+      sweet.results.set('chrome', {
+        cookies: [
+          { name: 'auth_token', value: 'test_auth', domain: 'x.com' },
+          { name: 'ct0', value: 'test_ct0', domain: 'x.com' },
+        ],
+        warnings: [],
+      });
+
+      const { resolveCredentials } = await import('../src/lib/cookies.js');
+      const result = await resolveCredentials({ cookieSource: 'chrome' });
+
+      expect(result.cookies.authToken).toBe('test_auth');
+      expect(result.cookies.ct0).toBe('test_ct0');
+      expect(sweet.options.get('chrome')?.timeoutMs).toBe(30000);
+    });
+
+    it('uses default browser order when cookieSource is omitted', async () => {
+      sweet.results.set('safari', { cookies: [], warnings: [] });
+      sweet.results.set('chrome', { cookies: [], warnings: [] });
+      sweet.results.set('firefox', {
+        cookies: [
+          { name: 'auth_token', value: 'firefox_auth', domain: 'x.com' },
+          { name: 'ct0', value: 'firefox_ct0', domain: 'x.com' },
+        ],
+        warnings: [],
+      });
+
+      const { resolveCredentials } = await import('../src/lib/cookies.js');
+      const result = await resolveCredentials({});
+
+      expect(result.cookies.authToken).toBe('firefox_auth');
+      expect(result.cookies.ct0).toBe('firefox_ct0');
+      expect(result.cookies.source).toContain('Firefox');
+    });
+
+    it('prefers twitter.com cookies when x.com is missing', async () => {
+      sweet.results.set('chrome', {
+        cookies: [
+          { name: 'auth_token', value: 'twitter_auth', domain: 'twitter.com' },
+          { name: 'ct0', value: 'twitter_ct0', domain: 'twitter.com' },
+        ],
+        warnings: [],
+      });
+
+      const { resolveCredentials } = await import('../src/lib/cookies.js');
+      const result = await resolveCredentials({ cookieSource: 'chrome' });
+
+      expect(result.cookies.authToken).toBe('twitter_auth');
+      expect(result.cookies.ct0).toBe('twitter_ct0');
+    });
+
+    it('falls back to the first cookie when no domain matches', async () => {
+      sweet.results.set('firefox', {
+        cookies: [
+          { name: 'auth_token', value: 'first_auth', domain: 'example.com' },
+          { name: 'ct0', value: 'first_ct0', domain: 'example.com' },
+        ],
+        warnings: [],
+      });
+
+      const { resolveCredentials } = await import('../src/lib/cookies.js');
+      const result = await resolveCredentials({ cookieSource: 'firefox' });
+
+      expect(result.cookies.authToken).toBe('first_auth');
+      expect(result.cookies.ct0).toBe('first_ct0');
     });
   });
 
   describe('extractCookiesFromSafari', () => {
-    itIfDarwin('returns cookies from Safari binarycookies', async () => {
-      const fs = await import('node:fs');
-      (fs.existsSync as unknown as vi.Mock).mockImplementation((path: string) =>
-        path.toLowerCase().endsWith('cookies.binarycookies'),
-      );
-      (fs.copyFileSync as unknown as vi.Mock).mockImplementation(() => {});
-      (fs.mkdtempSync as unknown as vi.Mock).mockReturnValue('/tmp/test-dir');
-      (fs.readFileSync as unknown as vi.Mock).mockReturnValue(
-        buildSafariCookiesFile([
-          buildSafariCookieRecord({ domain: '.x.com', name: 'auth_token', value: 'safari_auth' }),
-          buildSafariCookieRecord({ domain: '.x.com', name: 'ct0', value: 'safari_ct0' }),
-        ]),
-      );
+    it('returns cookies from Safari', async () => {
+      if (process.platform !== 'darwin') {
+        return;
+      }
+      sweet.results.set('safari', {
+        cookies: [
+          { name: 'auth_token', value: 'safari_auth', domain: 'x.com' },
+          { name: 'ct0', value: 'safari_ct0', domain: 'x.com' },
+        ],
+        warnings: [],
+      });
 
       const { extractCookiesFromSafari } = await import('../src/lib/cookies.js');
       const result = await extractCookiesFromSafari();
@@ -313,23 +294,24 @@ describe('cookies', () => {
       expect(result.cookies.source).toBe('Safari');
     });
 
-    itIfDarwin('prefers Safari over Chrome when both are available', async () => {
-      const fs = await import('node:fs');
-
-      (fs.existsSync as unknown as vi.Mock).mockImplementation((path: string) => {
-        const lower = path.toLowerCase();
-        if (lower.endsWith('cookies.binarycookies')) return true;
-        if (lower.includes('chrome') && lower.endsWith('cookies')) return true;
-        return false;
+    it('prefers Safari over Chrome when both are available', async () => {
+      if (process.platform !== 'darwin') {
+        return;
+      }
+      sweet.results.set('safari', {
+        cookies: [
+          { name: 'auth_token', value: 'safari_auth', domain: 'x.com' },
+          { name: 'ct0', value: 'safari_ct0', domain: 'x.com' },
+        ],
+        warnings: [],
+      });
+      sweet.results.set('chrome', {
+        cookies: [
+          { name: 'auth_token', value: 'chrome_auth', domain: 'x.com' },
+          { name: 'ct0', value: 'chrome_ct0', domain: 'x.com' },
+        ],
+        warnings: [],
       });
-      (fs.copyFileSync as unknown as vi.Mock).mockImplementation(() => {});
-      (fs.mkdtempSync as unknown as vi.Mock).mockReturnValue('/tmp/test-dir');
-      (fs.readFileSync as unknown as vi.Mock).mockReturnValue(
-        buildSafariCookiesFile([
-          buildSafariCookieRecord({ domain: '.x.com', name: 'auth_token', value: 'safari_auth' }),
-          buildSafariCookieRecord({ domain: '.x.com', name: 'ct0', value: 'safari_ct0' }),
-        ]),
-      );
 
       const { resolveCredentials } = await import('../src/lib/cookies.js');
       const result = await resolveCredentials({ cookieSource: ['safari', 'chrome'] });
@@ -340,18 +322,13 @@ describe('cookies', () => {
   });
 
   describe('extractCookiesFromChrome', () => {
-    it('returns cookies when sqlite yields hex values', async () => {
-      const fs = await import('node:fs');
-      const { execSync } = await import('node:child_process');
-      // Pretend Chrome cookie DB exists
-      (fs.existsSync as unknown as vi.Mock).mockImplementation((path: string) => path.includes('Cookies'));
-      (fs.copyFileSync as unknown as vi.Mock).mockImplementation(() => {});
-      // sqlite output with hex strings ("test_auth", "test_ct0")
-      (execSync as unknown as vi.Mock).mockImplementation((cmd: string) => {
-        if (cmd.includes('sqlite3')) {
-          return 'auth_token|746573745f61757468\nct0|746573745f637430';
-        }
-        return '';
+    it('returns cookies when Chrome yields values', async () => {
+      sweet.results.set('chrome', {
+        cookies: [
+          { name: 'auth_token', value: 'test_auth', domain: 'x.com' },
+          { name: 'ct0', value: 'test_ct0', domain: 'x.com' },
+        ],
+        warnings: [],
       });
 
       const { extractCookiesFromChrome } = await import('../src/lib/cookies.js');
@@ -363,12 +340,8 @@ describe('cookies', () => {
       expect(result.warnings).toHaveLength(0);
     });
 
-    it('warns when Chrome DB exists but contains no cookies', async () => {
-      const fs = await import('node:fs');
-      const { execSync } = await import('node:child_process');
-      (fs.existsSync as unknown as vi.Mock).mockImplementation((path: string) => path.includes('Cookies'));
-      (fs.copyFileSync as unknown as vi.Mock).mockImplementation(() => {});
-      (execSync as unknown as vi.Mock).mockReturnValue('');
+    it('warns when Chrome returns no cookies', async () => {
+      sweet.results.set('chrome', { cookies: [], warnings: [] });
 
       const { extractCookiesFromChrome } = await import('../src/lib/cookies.js');
       const result = await extractCookiesFromChrome('Default');
@@ -381,6 +354,11 @@ describe('cookies', () => {
 
   describe('extractCookiesFromFirefox', () => {
     it('warns when Firefox cookies database is missing', async () => {
+      sweet.results.set('firefox', {
+        cookies: [],
+        warnings: ['Firefox cookies database not found.'],
+      });
+
       const { extractCookiesFromFirefox } = await import('../src/lib/cookies.js');
       const result = await extractCookiesFromFirefox('missing-profile');
 
@@ -389,21 +367,8 @@ describe('cookies', () => {
       expect(result.warnings).toContain('Firefox cookies database not found.');
     });
 
-    it('warns when Firefox DB exists but contains no cookies', async () => {
-      const fs = await import('node:fs');
-      const { execSync } = await import('node:child_process');
-      (fs.existsSync as unknown as vi.Mock).mockImplementation((path: string) => {
-        const lower = path.toLowerCase();
-        if (lower.endsWith('cookies.sqlite')) return true;
-        if (lower.includes('firefox')) return true;
-        return false;
-      });
-      (fs.readdirSync as unknown as vi.Mock).mockReturnValue([
-        { isDirectory: () => true, name: 'abc.default-release' },
-      ]);
-      (fs.copyFileSync as unknown as vi.Mock).mockImplementation(() => {});
-      (fs.mkdtempSync as unknown as vi.Mock).mockReturnValue('/tmp/test-dir');
-      (execSync as unknown as vi.Mock).mockReturnValue('');
+    it('warns when Firefox returns no cookies', async () => {
+      sweet.results.set('firefox', { cookies: [], warnings: [] });
 
       const { extractCookiesFromFirefox } = await import('../src/lib/cookies.js');
       const result = await extractCookiesFromFirefox('abc.default-release');

tests/extract-article-metadata.test.ts

@@ -0,0 +1,88 @@
+import { describe, expect, it } from 'vitest';
+import type { GraphqlTweetResult } from '../src/lib/twitter-client-types.js';
+import { extractArticleMetadata } from '../src/lib/twitter-client-utils.js';
+
+describe('extractArticleMetadata', () => {
+  it('returns undefined when no result', () => {
+    expect(extractArticleMetadata(undefined)).toBeUndefined();
+  });
+
+  it('returns undefined when no article field', () => {
+    const result: GraphqlTweetResult = {
+      rest_id: '123',
+      legacy: { full_text: 'Hello world' },
+    };
+    expect(extractArticleMetadata(result)).toBeUndefined();
+  });
+
+  it('returns undefined when article has no title', () => {
+    const result: GraphqlTweetResult = {
+      rest_id: '123',
+      article: {
+        article_results: {
+          result: {},
+        },
+      },
+    };
+    expect(extractArticleMetadata(result)).toBeUndefined();
+  });
+
+  it('extracts title from article_results.result', () => {
+    const result: GraphqlTweetResult = {
+      rest_id: '123',
+      article: {
+        article_results: {
+          result: {
+            title: 'Building Context Graphs for GTM',
+          },
+        },
+      },
+    };
+
+    const metadata = extractArticleMetadata(result);
+    expect(metadata).toEqual({
+      title: 'Building Context Graphs for GTM',
+      previewText: undefined,
+    });
+  });
+
+  it('extracts title and preview_text from article_results.result', () => {
+    const result: GraphqlTweetResult = {
+      rest_id: '123',
+      article: {
+        article_results: {
+          result: {
+            title: 'Building Context Graphs for GTM',
+            preview_text:
+              'Foundation Capital recently argued that one of the next trillion-dollar opportunities in AI will come from context graphs.',
+          },
+        },
+      },
+    } as GraphqlTweetResult;
+
+    const metadata = extractArticleMetadata(result);
+    expect(metadata).toEqual({
+      title: 'Building Context Graphs for GTM',
+      previewText:
+        'Foundation Capital recently argued that one of the next trillion-dollar opportunities in AI will come from context graphs.',
+    });
+  });
+
+  it('falls back to article.title when article_results.result.title missing', () => {
+    const result: GraphqlTweetResult = {
+      rest_id: '123',
+      article: {
+        title: 'Fallback Title',
+        article_results: {
+          result: {},
+        },
+      },
+    };
+
+    const metadata = extractArticleMetadata(result);
+    expect(metadata).toEqual({
+      title: 'Fallback Title',
+      previewText: undefined,
+    });
+  });
+});

tests/extract-article-text.test.ts

@@ -0,0 +1,33 @@
+import { describe, expect, it } from 'vitest';
+import type { GraphqlTweetResult } from '../src/lib/twitter-client-types.js';
+import { extractArticleText } from '../src/lib/twitter-client-utils.js';
+
+describe('extractArticleText', () => {
+  it('does not duplicate title when rich content starts with a heading', () => {
+    const result = {
+      rest_id: '1',
+      article: {
+        title: 'Hello World',
+        article_results: {
+          result: {
+            title: 'Hello World',
+            content_state: {
+              blocks: [
+                {
+                  key: '1',
+                  type: 'header-one',
+                  text: 'Hello World',
+                  entityRanges: [],
+                  inlineStyleRanges: [],
+                },
+              ],
+              entityMap: [],
+            },
+          },
+        },
+      },
+    } as GraphqlTweetResult;
+
+    expect(extractArticleText(result)).toBe('# Hello World');
+  });
+});

tests/extract-media.test.ts

@@ -0,0 +1,332 @@
+import { describe, expect, it } from 'vitest';
+import type { GraphqlTweetResult } from '../src/lib/twitter-client-types.js';
+import { extractMedia } from '../src/lib/twitter-client-utils.js';
+
+describe('extractMedia', () => {
+  it('returns undefined when no legacy data', () => {
+    expect(extractMedia(undefined)).toBeUndefined();
+    expect(extractMedia({})).toBeUndefined();
+    expect(extractMedia({ legacy: {} })).toBeUndefined();
+  });
+
+  it('returns undefined when media array is empty', () => {
+    const result: GraphqlTweetResult = {
+      legacy: {
+        extended_entities: { media: [] },
+      },
+    };
+    expect(extractMedia(result)).toBeUndefined();
+  });
+
+  it('extracts photo with dimensions and preview', () => {
+    const result: GraphqlTweetResult = {
+      legacy: {
+        extended_entities: {
+          media: [
+            {
+              type: 'photo',
+              media_url_https: 'https://pbs.twimg.com/media/test.jpg',
+              sizes: {
+                large: { w: 1920, h: 1080, resize: 'fit' },
+                small: { w: 680, h: 383, resize: 'fit' },
+              },
+            },
+          ],
+        },
+      },
+    };
+
+    const media = extractMedia(result);
+    expect(media).toHaveLength(1);
+    const item = media?.[0];
+    expect(item).toEqual({
+      type: 'photo',
+      url: 'https://pbs.twimg.com/media/test.jpg',
+      width: 1920,
+      height: 1080,
+      previewUrl: 'https://pbs.twimg.com/media/test.jpg:small',
+    });
+  });
+
+  it('falls back to medium size when large unavailable', () => {
+    const result: GraphqlTweetResult = {
+      legacy: {
+        extended_entities: {
+          media: [
+            {
+              type: 'photo',
+              media_url_https: 'https://pbs.twimg.com/media/test.jpg',
+              sizes: {
+                medium: { w: 1200, h: 675, resize: 'fit' },
+              },
+            },
+          ],
+        },
+      },
+    };
+
+    const media = extractMedia(result);
+    const item = media?.[0];
+    expect(item?.width).toBe(1200);
+    expect(item?.height).toBe(675);
+    expect(item?.previewUrl).toBeUndefined();
+  });
+
+  it('extracts video with highest bitrate mp4', () => {
+    const result: GraphqlTweetResult = {
+      legacy: {
+        extended_entities: {
+          media: [
+            {
+              type: 'video',
+              media_url_https: 'https://pbs.twimg.com/ext_tw_video_thumb/123/img/thumb.jpg',
+              sizes: {
+                large: { w: 1280, h: 720, resize: 'fit' },
+                small: { w: 680, h: 383, resize: 'fit' },
+              },
+              video_info: {
+                duration_millis: 30000,
+                variants: [
+                  { bitrate: 256000, content_type: 'video/mp4', url: 'https://video.twimg.com/low.mp4' },
+                  { bitrate: 2176000, content_type: 'video/mp4', url: 'https://video.twimg.com/high.mp4' },
+                  { bitrate: 832000, content_type: 'video/mp4', url: 'https://video.twimg.com/medium.mp4' },
+                  { content_type: 'application/x-mpegURL', url: 'https://video.twimg.com/pl.m3u8' },
+                ],
+              },
+            },
+          ],
+        },
+      },
+    };
+
+    const media = extractMedia(result);
+    expect(media).toHaveLength(1);
+    const item = media?.[0];
+    expect(item).toEqual({
+      type: 'video',
+      url: 'https://pbs.twimg.com/ext_tw_video_thumb/123/img/thumb.jpg',
+      width: 1280,
+      height: 720,
+      previewUrl: 'https://pbs.twimg.com/ext_tw_video_thumb/123/img/thumb.jpg:small',
+      videoUrl: 'https://video.twimg.com/high.mp4',
+      durationMs: 30000,
+    });
+  });
+
+  it('falls back to first mp4 when bitrate is missing', () => {
+    const result: GraphqlTweetResult = {
+      legacy: {
+        extended_entities: {
+          media: [
+            {
+              type: 'video',
+              media_url_https: 'https://pbs.twimg.com/ext_tw_video_thumb/123/img/thumb.jpg',
+              video_info: {
+                variants: [
+                  { content_type: 'video/mp4', url: 'https://video.twimg.com/no-bitrate.mp4' },
+                  { content_type: 'application/x-mpegURL', url: 'https://video.twimg.com/pl.m3u8' },
+                ],
+              },
+            },
+          ],
+        },
+      },
+    };
+
+    const media = extractMedia(result);
+    expect(media).toHaveLength(1);
+    const item = media?.[0];
+    expect(item?.videoUrl).toBe('https://video.twimg.com/no-bitrate.mp4');
+  });
+
+  it('extracts animated_gif with video url', () => {
+    const result: GraphqlTweetResult = {
+      legacy: {
+        extended_entities: {
+          media: [
+            {
+              type: 'animated_gif',
+              media_url_https: 'https://pbs.twimg.com/tweet_video_thumb/test.jpg',
+              sizes: {
+                large: { w: 480, h: 270, resize: 'fit' },
+                small: { w: 480, h: 270, resize: 'fit' },
+              },
+              video_info: {
+                variants: [
+                  { bitrate: 0, content_type: 'video/mp4', url: 'https://video.twimg.com/tweet_video/test.mp4' },
+                ],
+              },
+            },
+          ],
+        },
+      },
+    };
+
+    const media = extractMedia(result);
+    expect(media).toHaveLength(1);
+    const item = media?.[0];
+    expect(item?.type).toBe('animated_gif');
+    expect(item?.videoUrl).toBe('https://video.twimg.com/tweet_video/test.mp4');
+    expect(item?.durationMs).toBeUndefined();
+  });
+
+  it('keeps zero duration for videos', () => {
+    const result: GraphqlTweetResult = {
+      legacy: {
+        extended_entities: {
+          media: [
+            {
+              type: 'video',
+              media_url_https: 'https://pbs.twimg.com/ext_tw_video_thumb/zero.jpg',
+              video_info: {
+                duration_millis: 0,
+                variants: [{ content_type: 'video/mp4', url: 'https://video.twimg.com/zero.mp4' }],
+              },
+            },
+          ],
+        },
+      },
+    };
+
+    const media = extractMedia(result);
+    expect(media).toHaveLength(1);
+    const item = media?.[0];
+    expect(item?.durationMs).toBe(0);
+  });
+
+  it('handles multiple media items', () => {
+    const result: GraphqlTweetResult = {
+      legacy: {
+        extended_entities: {
+          media: [
+            {
+              type: 'photo',
+              media_url_https: 'https://pbs.twimg.com/media/photo1.jpg',
+              sizes: { large: { w: 800, h: 600, resize: 'fit' } },
+            },
+            {
+              type: 'photo',
+              media_url_https: 'https://pbs.twimg.com/media/photo2.jpg',
+              sizes: { large: { w: 1024, h: 768, resize: 'fit' } },
+            },
+            {
+              type: 'video',
+              media_url_https: 'https://pbs.twimg.com/ext_tw_video_thumb/vid.jpg',
+              sizes: { large: { w: 1920, h: 1080, resize: 'fit' } },
+              video_info: {
+                duration_millis: 15000,
+                variants: [{ bitrate: 1000000, content_type: 'video/mp4', url: 'https://video.twimg.com/vid.mp4' }],
+              },
+            },
+          ],
+        },
+      },
+    };
+
+    const media = extractMedia(result) ?? [];
+    expect(media).toHaveLength(3);
+    const [first, second, third] = media;
+    expect(first?.type).toBe('photo');
+    expect(second?.type).toBe('photo');
+    expect(third?.type).toBe('video');
+    expect(third?.videoUrl).toBe('https://video.twimg.com/vid.mp4');
+  });
+
+  it('skips items missing type or url', () => {
+    const result: GraphqlTweetResult = {
+      legacy: {
+        extended_entities: {
+          media: [
+            { type: 'photo' } as never, // missing media_url_https
+            { media_url_https: 'https://pbs.twimg.com/media/test.jpg' } as never, // missing type
+            {
+              type: 'photo',
+              media_url_https: 'https://pbs.twimg.com/media/valid.jpg',
+              sizes: { large: { w: 100, h: 100, resize: 'fit' } },
+            },
+          ],
+        },
+      },
+    };
+
+    const media = extractMedia(result);
+    expect(media).toHaveLength(1);
+    const item = media?.[0];
+    expect(item?.url).toBe('https://pbs.twimg.com/media/valid.jpg');
+  });
+
+  it('prefers extended_entities over entities', () => {
+    const result: GraphqlTweetResult = {
+      legacy: {
+        entities: {
+          media: [
+            {
+              type: 'photo',
+              media_url_https: 'https://pbs.twimg.com/media/from_entities.jpg',
+              sizes: { large: { w: 100, h: 100, resize: 'fit' } },
+            },
+          ],
+        },
+        extended_entities: {
+          media: [
+            {
+              type: 'photo',
+              media_url_https: 'https://pbs.twimg.com/media/from_extended.jpg',
+              sizes: { large: { w: 200, h: 200, resize: 'fit' } },
+            },
+          ],
+        },
+      },
+    };
+
+    const media = extractMedia(result);
+    const item = media?.[0];
+    expect(item?.url).toBe('https://pbs.twimg.com/media/from_extended.jpg');
+  });
+
+  it('falls back to entities when extended_entities missing', () => {
+    const result: GraphqlTweetResult = {
+      legacy: {
+        entities: {
+          media: [
+            {
+              type: 'photo',
+              media_url_https: 'https://pbs.twimg.com/media/from_entities.jpg',
+              sizes: { large: { w: 100, h: 100, resize: 'fit' } },
+            },
+          ],
+        },
+      },
+    };
+
+    const media = extractMedia(result);
+    const item = media?.[0];
+    expect(item?.url).toBe('https://pbs.twimg.com/media/from_entities.jpg');
+  });
+
+  it('handles video without mp4 variants', () => {
+    const result: GraphqlTweetResult = {
+      legacy: {
+        extended_entities: {
+          media: [
+            {
+              type: 'video',
+              media_url_https: 'https://pbs.twimg.com/ext_tw_video_thumb/test.jpg',
+              sizes: { large: { w: 1280, h: 720, resize: 'fit' } },
+              video_info: {
+                duration_millis: 10000,
+                variants: [{ content_type: 'application/x-mpegURL', url: 'https://video.twimg.com/pl.m3u8' }],
+              },
+            },
+          ],
+        },
+      },
+    };
+
+    const media = extractMedia(result);
+    const item = media?.[0];
+    expect(item?.type).toBe('video');
+    expect(item?.videoUrl).toBeUndefined();
+    expect(item?.durationMs).toBe(10000);
+  });
+});

tests/help-output.test.ts

@@ -0,0 +1,100 @@
+import { describe, expect, it } from 'vitest';
+import { createProgram } from '../src/cli/program.js';
+import { createCliContext } from '../src/cli/shared.js';
+
+describe('root help output', () => {
+  it('mentions shorthand + json and lists user commands', () => {
+    const ctx = createCliContext([]);
+    const program = createProgram(ctx);
+    let help = '';
+    program.configureOutput({
+      writeOut: (s) => {
+        help += s;
+      },
+      writeErr: () => {},
+    });
+    program.outputHelp();
+
+    expect(help).toContain('following');
+    expect(help).toContain('followers');
+    expect(help).toContain('likes');
+
+    expect(help).toContain('bird <tweet-id-or-url>');
+    expect(help).toContain('--json');
+    expect(help).toContain('--json-full');
+    expect(help).toContain('_raw');
+  });
+
+  it('shows global options in subcommand help', () => {
+    const ctx = createCliContext([]);
+    const program = createProgram(ctx);
+    const cmd = program.commands.find((c) => c.name() === 'read');
+    if (!cmd) {
+      throw new Error('Expected "read" command to be registered');
+    }
+
+    let help = '';
+    const output = {
+      writeOut: (s) => {
+        help += s;
+      },
+      writeErr: () => {},
+    };
+    program.configureOutput(output);
+    cmd.configureOutput(output);
+
+    cmd.outputHelp();
+
+    expect(help).toContain('--auth-token');
+    expect(help).toContain('--ct0');
+    expect(help).toContain('--timeout');
+    expect(help).toContain('--quote-depth');
+  });
+
+  it('shows --json-full option in read command help', () => {
+    const ctx = createCliContext([]);
+    const program = createProgram(ctx);
+    const cmd = program.commands.find((c) => c.name() === 'read');
+    if (!cmd) {
+      throw new Error('Expected "read" command to be registered');
+    }
+
+    let help = '';
+    const output = {
+      writeOut: (s) => {
+        help += s;
+      },
+      writeErr: () => {},
+    };
+    program.configureOutput(output);
+    cmd.configureOutput(output);
+
+    cmd.outputHelp();
+
+    expect(help).toContain('--json-full');
+    expect(help).toContain('_raw');
+  });
+
+  it('shows --json-full option in search command help', () => {
+    const ctx = createCliContext([]);
+    const program = createProgram(ctx);
+    const cmd = program.commands.find((c) => c.name() === 'search');
+    if (!cmd) {
+      throw new Error('Expected "search" command to be registered');
+    }
+
+    let help = '';
+    const output = {
+      writeOut: (s) => {
+        help += s;
+      },
+      writeErr: () => {},
+    };
+    program.configureOutput(output);
+    cmd.configureOutput(output);
+
+    cmd.outputHelp();
+
+    expect(help).toContain('--json-full');
+  });
+});

tests/library-exports.test.ts

@@ -0,0 +1,9 @@
+import { describe, expect, it } from 'vitest';
+import { resolveCredentials, TwitterClient } from '../src/index.js';
+
+describe('library exports', () => {
+  it('exposes primary library surface', () => {
+    expect(typeof TwitterClient).toBe('function');
+    expect(typeof resolveCredentials).toBe('function');
+  });
+});

tests/live/live-all.test.ts

@@ -0,0 +1,426 @@
+import { spawn } from 'node:child_process';
+import { existsSync } from 'node:fs';
+import path from 'node:path';
+import { beforeAll, describe, expect, it } from 'vitest';
+
+type RunResult = { exitCode: number; stdout: string; stderr: string; signal: NodeJS.Signals | null };
+
+const LIVE = process.env.BIRD_LIVE === '1';
+
+const authToken = (process.env.AUTH_TOKEN ?? process.env.TWITTER_AUTH_TOKEN ?? '').trim();
+const ct0 = (process.env.CT0 ?? process.env.TWITTER_CT0 ?? '').trim();
+
+const CLI_PATH = path.resolve(process.cwd(), 'dist', 'cli.js');
+
+const WHOAMI_HANDLE_REGEX = /^user:\s*@([A-Za-z0-9_]+)/m;
+const WHOAMI_USER_ID_REGEX = /^user_id:\s*([0-9]+)/m;
+const TWEET_ID_REGEX = /^\d+$/;
+const LIVE_NODE_ENV = (process.env.BIRD_LIVE_NODE_ENV ?? 'production').trim() || 'production';
+
+function runBird(args: string[], options: { timeoutMs?: number } = {}): Promise<RunResult> {
+  if (!LIVE) {
+    throw new Error('runBird() called without BIRD_LIVE=1');
+  }
+
+  return new Promise((resolve) => {
+    const child = spawn(process.execPath, [CLI_PATH, ...args], {
+      stdio: ['ignore', 'pipe', 'pipe'],
+      env: {
+        ...process.env,
+        AUTH_TOKEN: authToken,
+        CT0: ct0,
+        NODE_ENV: LIVE_NODE_ENV,
+      },
+    });
+
+    const stdoutChunks: Buffer[] = [];
+    const stderrChunks: Buffer[] = [];
+
+    child.stdout.on('data', (chunk: Buffer) => stdoutChunks.push(chunk));
+    child.stderr.on('data', (chunk: Buffer) => stderrChunks.push(chunk));
+
+    const killTimer =
+      typeof options.timeoutMs === 'number' && options.timeoutMs > 0
+        ? setTimeout(() => {
+            child.kill('SIGKILL');
+          }, options.timeoutMs)
+        : null;
+
+    child.on('close', (code, signal) => {
+      if (killTimer) {
+        clearTimeout(killTimer);
+      }
+      resolve({
+        exitCode: code ?? (signal ? 1 : 0),
+        stdout: Buffer.concat(stdoutChunks).toString('utf8'),
+        stderr: Buffer.concat(stderrChunks).toString('utf8'),
+        signal: signal ?? null,
+      });
+    });
+  });
+}
+
+function parseJson<T>(stdout: string): T {
+  try {
+    return JSON.parse(stdout) as T;
+  } catch (error) {
+    throw new Error(`Invalid JSON output: ${error instanceof Error ? error.message : String(error)}\n${stdout}`);
+  }
+}
+
+async function sleep(ms: number): Promise<void> {
+  await new Promise((resolve) => setTimeout(resolve, ms));
+}
+
+const d = LIVE ? describe : describe.skip;
+
+d('live CLI (Twitter/X) all commands', () => {
+  const timeoutArg = (process.env.BIRD_LIVE_TIMEOUT_MS ?? '20000').trim();
+  const cookieTimeoutArg = (process.env.BIRD_LIVE_COOKIE_TIMEOUT_MS ?? '30000').trim();
+  const baseArgs = ['--plain', '--timeout', timeoutArg, '--quote-depth', '0'];
+
+  let whoamiStdout = '';
+  let handle = '';
+  let userId = '';
+  let tweetId = '';
+  let searchStdout = '';
+  let listId = '';
+  let listTimelineAvailable = false;
+
+  beforeAll(async () => {
+    if (!existsSync(CLI_PATH)) {
+      throw new Error(`Missing ${CLI_PATH}. Run: pnpm run build:dist`);
+    }
+
+    if (!authToken || !ct0) {
+      const check = await runBird([...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'check'], { timeoutMs: 45_000 });
+      if (check.exitCode !== 0) {
+        throw new Error(
+          'Missing live credentials.\n' +
+            '- Option A: set AUTH_TOKEN + CT0 (or TWITTER_AUTH_TOKEN/TWITTER_CT0)\n' +
+            '- Option B: login to x.com in Safari/Chrome/Firefox for cookie extraction\n\n' +
+            `bird check output:\n${check.stdout}\n${check.stderr}`,
+        );
+      }
+    }
+
+    const who = await runBird([...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'whoami'], { timeoutMs: 45_000 });
+    if (who.exitCode !== 0) {
+      throw new Error(`whoami failed (exit ${who.exitCode}, signal ${who.signal ?? 'none'}):\n${who.stderr}`);
+    }
+    whoamiStdout = who.stdout;
+
+    const handleMatch = WHOAMI_HANDLE_REGEX.exec(who.stdout);
+    if (!handleMatch?.[1]) {
+      throw new Error(`Could not parse whoami handle:\n${who.stdout}`);
+    }
+    handle = handleMatch[1];
+
+    const userIdMatch = WHOAMI_USER_ID_REGEX.exec(who.stdout);
+    if (!userIdMatch?.[1]) {
+      throw new Error(`Could not parse whoami user_id:\n${who.stdout}`);
+    }
+    userId = userIdMatch[1];
+
+    const forcedTweetId = (process.env.BIRD_LIVE_TWEET_ID ?? '').trim();
+    if (forcedTweetId) {
+      if (!TWEET_ID_REGEX.test(forcedTweetId)) {
+        throw new Error(`Invalid BIRD_LIVE_TWEET_ID (expected digits): "${forcedTweetId}"`);
+      }
+      tweetId = forcedTweetId;
+    } else {
+      const searchQuery = (
+        process.env.BIRD_LIVE_SEARCH_QUERY ?? `from:${handle} -filter:replies -filter:retweets`
+      ).trim();
+      const search = await runBird(
+        [...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'search', searchQuery, '-n', '25', '--json'],
+        {
+          timeoutMs: 45_000,
+        },
+      );
+      if (search.exitCode !== 0) {
+        throw new Error(
+          `search failed (exit ${search.exitCode}, signal ${search.signal ?? 'none'}):\n${search.stderr}`,
+        );
+      }
+      searchStdout = search.stdout;
+      const tweets = parseJson<Array<{ id?: string }>>(search.stdout);
+      const first = String(tweets[0]?.id ?? '');
+      if (!TWEET_ID_REGEX.test(first)) {
+        throw new Error(
+          `Search returned no usable tweets. Query: "${searchQuery}". ` +
+            `Override with BIRD_LIVE_SEARCH_QUERY.\n${search.stdout}`,
+        );
+      }
+      tweetId = first;
+    }
+
+    listId = (process.env.BIRD_LIVE_LIST_ID ?? '').trim();
+    if (!listId) {
+      const lists = await runBird([...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'lists', '-n', '1', '--json'], {
+        timeoutMs: 45_000,
+      });
+      if (lists.exitCode === 0) {
+        const parsed = parseJson<Array<{ id?: string }>>(lists.stdout);
+        listId = String(parsed[0]?.id ?? '').trim();
+      }
+    }
+    if (!listId) {
+      const lists = await runBird(
+        [...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'lists', '--member-of', '-n', '1', '--json'],
+        {
+          timeoutMs: 45_000,
+        },
+      );
+      if (lists.exitCode === 0) {
+        const parsed = parseJson<Array<{ id?: string }>>(lists.stdout);
+        listId = String(parsed[0]?.id ?? '').trim();
+      }
+    }
+    listTimelineAvailable = Boolean(listId);
+  });
+
+  it('requires env credentials + built dist CLI', async () => {
+    expect(existsSync(CLI_PATH)).toBe(true);
+    expect(whoamiStdout.length).toBeGreaterThan(0);
+  });
+
+  it('check works', async () => {
+    const check = await runBird([...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'check'], { timeoutMs: 45_000 });
+    expect(check.exitCode).toBe(0);
+    expect(check.stdout.length).toBeGreaterThan(0);
+  });
+
+  it('whoami works', async () => {
+    expect(whoamiStdout).toContain('user: @');
+    expect(whoamiStdout).toContain('user_id:');
+  });
+
+  it('search returns JSON array', async () => {
+    const search = searchStdout
+      ? { exitCode: 0, stdout: searchStdout }
+      : await runBird(
+          [...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'search', `from:${handle}`, '-n', '10', '--json'],
+          { timeoutMs: 45_000 },
+        );
+    expect(search.exitCode).toBe(0);
+    const tweets = parseJson<Array<{ id?: string }>>(search.stdout);
+    expect(Array.isArray(tweets)).toBe(true);
+  });
+
+  it('read returns tweet JSON', async () => {
+    const read = await runBird([...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'read', tweetId, '--json'], {
+      timeoutMs: 45_000,
+    });
+    expect(read.exitCode).toBe(0);
+    const readTweet = parseJson<{ id?: string; author?: { username?: string } }>(read.stdout);
+    expect(readTweet.id).toBe(tweetId);
+    expect(readTweet.author?.username?.length).toBeGreaterThan(0);
+  });
+
+  it('tweet-id shorthand returns tweet JSON', async () => {
+    const shorthand = await runBird([...baseArgs, '--cookie-timeout', cookieTimeoutArg, tweetId, '--json'], {
+      timeoutMs: 45_000,
+    });
+    expect(shorthand.exitCode).toBe(0);
+    const shorthandTweet = parseJson<{ id?: string }>(shorthand.stdout);
+    expect(shorthandTweet.id).toBe(tweetId);
+  });
+
+  it('replies returns JSON array', async () => {
+    const replies = await runBird([...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'replies', tweetId, '--json'], {
+      timeoutMs: 45_000,
+    });
+    expect(replies.exitCode).toBe(0);
+    const replyTweets = parseJson<Array<{ id?: string }>>(replies.stdout);
+    expect(Array.isArray(replyTweets)).toBe(true);
+  });
+
+  it('thread returns JSON array', async () => {
+    const thread = await runBird([...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'thread', tweetId, '--json'], {
+      timeoutMs: 45_000,
+    });
+    expect(thread.exitCode).toBe(0);
+    const threadTweets = parseJson<Array<{ id?: string }>>(thread.stdout);
+    expect(Array.isArray(threadTweets)).toBe(true);
+  });
+
+  it('mentions returns JSON array', async () => {
+    const mentions = await runBird(
+      [...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'mentions', '-n', '10', '--json'],
+      {
+        timeoutMs: 45_000,
+      },
+    );
+    expect(mentions.exitCode).toBe(0);
+    const mentionTweets = parseJson<Array<{ id?: string }>>(mentions.stdout);
+    expect(Array.isArray(mentionTweets)).toBe(true);
+  });
+
+  it('bookmarks returns JSON array', async () => {
+    const bookmarks = await runBird(
+      [...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'bookmarks', '-n', '10', '--json'],
+      {
+        timeoutMs: 45_000,
+      },
+    );
+    expect(bookmarks.exitCode).toBe(0);
+    const bookmarkTweets = parseJson<Array<{ id?: string }>>(bookmarks.stdout);
+    expect(Array.isArray(bookmarkTweets)).toBe(true);
+  });
+
+  it('likes returns JSON array', async () => {
+    const likes = await runBird([...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'likes', '-n', '10', '--json'], {
+      timeoutMs: 45_000,
+    });
+    expect(likes.exitCode).toBe(0);
+    const likeTweets = parseJson<Array<{ id?: string }>>(likes.stdout);
+    expect(Array.isArray(likeTweets)).toBe(true);
+  });
+
+  it('following returns JSON array', async () => {
+    const following = await runBird(
+      [...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'following', '--user', userId, '-n', '10', '--json'],
+      {
+        timeoutMs: 45_000,
+      },
+    );
+    expect(following.exitCode).toBe(0);
+    const followingUsers = parseJson<Array<{ id?: string; username?: string }>>(following.stdout);
+    expect(Array.isArray(followingUsers)).toBe(true);
+  });
+
+  it('followers returns JSON array', async () => {
+    const followers = await runBird(
+      [...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'followers', '--user', userId, '-n', '10', '--json'],
+      {
+        timeoutMs: 45_000,
+      },
+    );
+    expect(followers.exitCode).toBe(0);
+    const followerUsers = parseJson<Array<{ id?: string; username?: string }>>(followers.stdout);
+    expect(Array.isArray(followerUsers)).toBe(true);
+  });
+
+  it('user-tweets returns JSON array', async () => {
+    const testHandle = process.env.BIRD_LIVE_USER_TWEETS_HANDLE || 'X';
+    const userTweets = await runBird(
+      [...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'user-tweets', testHandle, '-n', '5', '--json'],
+      {
+        timeoutMs: 45_000,
+      },
+    );
+    expect(userTweets.exitCode).toBe(0);
+    const tweets = parseJson<Array<{ id?: string; author?: { username?: string } }>>(userTweets.stdout);
+    expect(Array.isArray(tweets)).toBe(true);
+    expect(tweets.length).toBeGreaterThan(0);
+  });
+
+  it('user-tweets paged JSON returns { tweets, nextCursor }', async () => {
+    const testHandle =
+      process.env.BIRD_LIVE_USER_TWEETS_PAGED_HANDLE ?? process.env.BIRD_LIVE_USER_TWEETS_HANDLE ?? 'X';
+    const userTweets = await runBird(
+      [
+        ...baseArgs,
+        '--cookie-timeout',
+        cookieTimeoutArg,
+        'user-tweets',
+        testHandle,
+        '-n',
+        '50',
+        '--max-pages',
+        '3',
+        '--delay',
+        '0',
+        '--json',
+      ],
+      {
+        timeoutMs: 45_000,
+      },
+    );
+    expect(userTweets.exitCode).toBe(0);
+    const payload = parseJson<{ tweets?: Array<{ id?: string }>; nextCursor?: string | null }>(userTweets.stdout);
+    expect(Array.isArray(payload.tweets)).toBe(true);
+  });
+
+  it('lists returns JSON array', async () => {
+    const lists = await runBird([...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'lists', '-n', '10', '--json'], {
+      timeoutMs: 45_000,
+    });
+    expect(lists.exitCode).toBe(0);
+    const payload = parseJson<Array<{ id?: string }>>(lists.stdout);
+    expect(Array.isArray(payload)).toBe(true);
+  });
+
+  it('list-timeline returns JSON array', async () => {
+    if (!listTimelineAvailable) {
+      return;
+    }
+    const timeline = await runBird(
+      [...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'list-timeline', listId, '-n', '5', '--json'],
+      { timeoutMs: 45_000 },
+    );
+    expect(timeline.exitCode).toBe(0);
+    const payload = parseJson<Array<{ id?: string }>>(timeline.stdout);
+    expect(Array.isArray(payload)).toBe(true);
+  });
+
+  it('home for-you returns JSON array', async () => {
+    const home = await runBird([...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'home', '-n', '5', '--json'], {
+      timeoutMs: 45_000,
+    });
+    expect(home.exitCode).toBe(0);
+    const payload = parseJson<Array<{ id?: string }>>(home.stdout);
+    expect(Array.isArray(payload)).toBe(true);
+  }, 60_000);
+
+  it('home following returns JSON array', async () => {
+    let home = await runBird(
+      [...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'home', '--following', '-n', '5', '--json'],
+      {
+        timeoutMs: 45_000,
+      },
+    );
+    if (home.exitCode !== 0 && home.stderr.includes('OverCapacity')) {
+      await sleep(1500);
+      home = await runBird(
+        [...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'home', '--following', '-n', '5', '--json'],
+        {
+          timeoutMs: 45_000,
+        },
+      );
+    }
+    expect(home.exitCode).toBe(0);
+    const payload = parseJson<Array<{ id?: string }>>(home.stdout);
+    expect(Array.isArray(payload)).toBe(true);
+  }, 60_000);
+
+  it('news returns JSON array', async () => {
+    const news = await runBird(
+      [...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'news', '-n', '5', '--ai-only', '--json'],
+      { timeoutMs: 45_000 },
+    );
+    expect(news.exitCode).toBe(0);
+    const payload = parseJson<Array<{ id?: string }>>(news.stdout);
+    expect(Array.isArray(payload)).toBe(true);
+  });
+
+  it('trending returns JSON array', async () => {
+    const trending = await runBird(
+      [...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'trending', '-n', '5', '--json'],
+      { timeoutMs: 45_000 },
+    );
+    expect(trending.exitCode).toBe(0);
+    const payload = parseJson<Array<{ id?: string }>>(trending.stdout);
+    expect(Array.isArray(payload)).toBe(true);
+  });
+
+  it('query-ids returns JSON', async () => {
+    const queryIds = await runBird([...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'query-ids', '--json'], {
+      timeoutMs: 60_000,
+    });
+    expect(queryIds.exitCode).toBe(0);
+    const snapshot = parseJson<{ cached?: boolean; ids?: Record<string, string> }>(queryIds.stdout);
+    expect(typeof snapshot.cached).toBe('boolean');
+  });
+});

tests/live/live.test.ts

@@ -0,0 +1,353 @@
+import { spawn } from 'node:child_process';
+import { existsSync } from 'node:fs';
+import path from 'node:path';
+import { beforeAll, describe, expect, it } from 'vitest';
+
+type RunResult = { exitCode: number; stdout: string; stderr: string; signal: NodeJS.Signals | null };
+
+const LIVE = process.env.BIRD_LIVE === '1';
+
+const authToken = (process.env.AUTH_TOKEN ?? process.env.TWITTER_AUTH_TOKEN ?? '').trim();
+const ct0 = (process.env.CT0 ?? process.env.TWITTER_CT0 ?? '').trim();
+
+const CLI_PATH = path.resolve(process.cwd(), 'dist', 'cli.js');
+
+const WHOAMI_HANDLE_REGEX = /^user:\s*@([A-Za-z0-9_]+)/m;
+const WHOAMI_USER_ID_REGEX = /^user_id:\s*([0-9]+)/m;
+const TWEET_ID_REGEX = /^\d+$/;
+const LIVE_NODE_ENV = (process.env.BIRD_LIVE_NODE_ENV ?? 'production').trim() || 'production';
+
+function runBird(args: string[], options: { timeoutMs?: number } = {}): Promise<RunResult> {
+  if (!LIVE) {
+    throw new Error('runBird() called without BIRD_LIVE=1');
+  }
+
+  return new Promise((resolve) => {
+    const child = spawn(process.execPath, [CLI_PATH, ...args], {
+      stdio: ['ignore', 'pipe', 'pipe'],
+      env: {
+        ...process.env,
+        AUTH_TOKEN: authToken,
+        CT0: ct0,
+        NODE_ENV: LIVE_NODE_ENV,
+      },
+    });
+
+    const stdoutChunks: Buffer[] = [];
+    const stderrChunks: Buffer[] = [];
+
+    child.stdout.on('data', (chunk: Buffer) => stdoutChunks.push(chunk));
+    child.stderr.on('data', (chunk: Buffer) => stderrChunks.push(chunk));
+
+    const killTimer =
+      typeof options.timeoutMs === 'number' && options.timeoutMs > 0
+        ? setTimeout(() => {
+            child.kill('SIGKILL');
+          }, options.timeoutMs)
+        : null;
+
+    child.on('close', (code, signal) => {
+      if (killTimer) {
+        clearTimeout(killTimer);
+      }
+      resolve({
+        exitCode: code ?? (signal ? 1 : 0),
+        stdout: Buffer.concat(stdoutChunks).toString('utf8'),
+        stderr: Buffer.concat(stderrChunks).toString('utf8'),
+        signal: signal ?? null,
+      });
+    });
+  });
+}
+
+function parseJson<T>(stdout: string): T {
+  try {
+    return JSON.parse(stdout) as T;
+  } catch (error) {
+    throw new Error(`Invalid JSON output: ${error instanceof Error ? error.message : String(error)}\n${stdout}`);
+  }
+}
+
+const d = LIVE ? describe : describe.skip;
+
+d('live CLI (Twitter/X)', () => {
+  const timeoutArg = (process.env.BIRD_LIVE_TIMEOUT_MS ?? '20000').trim();
+  const cookieTimeoutArg = (process.env.BIRD_LIVE_COOKIE_TIMEOUT_MS ?? '30000').trim();
+  const baseArgs = ['--plain', '--timeout', timeoutArg, '--quote-depth', '0'];
+
+  let whoamiStdout = '';
+  let handle = '';
+  let userId = '';
+  let tweetId = '';
+
+  beforeAll(async () => {
+    if (!existsSync(CLI_PATH)) {
+      throw new Error(`Missing ${CLI_PATH}. Run: pnpm run build:dist`);
+    }
+
+    if (!authToken || !ct0) {
+      const check = await runBird([...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'check'], { timeoutMs: 45_000 });
+      if (check.exitCode !== 0) {
+        throw new Error(
+          'Missing live credentials.\n' +
+            '- Option A: set AUTH_TOKEN + CT0 (or TWITTER_AUTH_TOKEN/TWITTER_CT0)\n' +
+            '- Option B: login to x.com in Safari/Chrome/Firefox for cookie extraction\n\n' +
+            `bird check output:\n${check.stdout}\n${check.stderr}`,
+        );
+      }
+    }
+
+    const who = await runBird([...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'whoami'], { timeoutMs: 45_000 });
+    if (who.exitCode !== 0) {
+      throw new Error(`whoami failed (exit ${who.exitCode}, signal ${who.signal ?? 'none'}):\n${who.stderr}`);
+    }
+    whoamiStdout = who.stdout;
+
+    const handleMatch = WHOAMI_HANDLE_REGEX.exec(who.stdout);
+    if (!handleMatch?.[1]) {
+      throw new Error(`Could not parse whoami handle:\n${who.stdout}`);
+    }
+    handle = handleMatch[1];
+
+    const userIdMatch = WHOAMI_USER_ID_REGEX.exec(who.stdout);
+    if (!userIdMatch?.[1]) {
+      throw new Error(`Could not parse whoami user_id:\n${who.stdout}`);
+    }
+    userId = userIdMatch[1];
+
+    const forcedTweetId = (process.env.BIRD_LIVE_TWEET_ID ?? '').trim();
+    if (forcedTweetId) {
+      if (!TWEET_ID_REGEX.test(forcedTweetId)) {
+        throw new Error(`Invalid BIRD_LIVE_TWEET_ID (expected digits): "${forcedTweetId}"`);
+      }
+      tweetId = forcedTweetId;
+      return;
+    }
+
+    const searchQuery = (
+      process.env.BIRD_LIVE_SEARCH_QUERY ?? `from:${handle} -filter:replies -filter:retweets`
+    ).trim();
+    const search = await runBird(
+      [...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'search', searchQuery, '-n', '25', '--json'],
+      {
+        timeoutMs: 45_000,
+      },
+    );
+    if (search.exitCode !== 0) {
+      throw new Error(`search failed (exit ${search.exitCode}, signal ${search.signal ?? 'none'}):\n${search.stderr}`);
+    }
+    const tweets = parseJson<Array<{ id?: string }>>(search.stdout);
+    const first = String(tweets[0]?.id ?? '');
+    if (!TWEET_ID_REGEX.test(first)) {
+      throw new Error(
+        `Search returned no usable tweets. Query: "${searchQuery}". ` +
+          `Override with BIRD_LIVE_SEARCH_QUERY.\n${search.stdout}`,
+      );
+    }
+    tweetId = first;
+  });
+
+  it('requires env credentials + built dist CLI', async () => {
+    expect(existsSync(CLI_PATH)).toBe(true);
+    expect(whoamiStdout.length).toBeGreaterThan(0);
+  });
+
+  it('whoami works', async () => {
+    expect(whoamiStdout).toContain('user: @');
+    expect(whoamiStdout).toContain('user_id:');
+    expect(whoamiStdout).toContain('engine:');
+    expect(whoamiStdout).toContain('credentials:');
+  });
+
+  it('read returns tweet JSON', async () => {
+    const read = await runBird([...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'read', tweetId, '--json'], {
+      timeoutMs: 45_000,
+    });
+    expect(read.exitCode).toBe(0);
+    const readTweet = parseJson<{ id?: string; author?: { username?: string } }>(read.stdout);
+    expect(readTweet.id).toBe(tweetId);
+    expect(readTweet.author?.username?.length).toBeGreaterThan(0);
+  });
+
+  it('tweet-id shorthand returns tweet JSON', async () => {
+    const shorthand = await runBird([...baseArgs, '--cookie-timeout', cookieTimeoutArg, tweetId, '--json'], {
+      timeoutMs: 45_000,
+    });
+    expect(shorthand.exitCode).toBe(0);
+    const shorthandTweet = parseJson<{ id?: string }>(shorthand.stdout);
+    expect(shorthandTweet.id).toBe(tweetId);
+  });
+
+  it('replies returns JSON array', async () => {
+    const replies = await runBird([...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'replies', tweetId, '--json'], {
+      timeoutMs: 45_000,
+    });
+    expect(replies.exitCode).toBe(0);
+    const replyTweets = parseJson<Array<{ id?: string }>>(replies.stdout);
+    expect(Array.isArray(replyTweets)).toBe(true);
+  });
+
+  it('thread returns JSON array', async () => {
+    const thread = await runBird([...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'thread', tweetId, '--json'], {
+      timeoutMs: 45_000,
+    });
+    expect(thread.exitCode).toBe(0);
+    const threadTweets = parseJson<Array<{ id?: string }>>(thread.stdout);
+    expect(Array.isArray(threadTweets)).toBe(true);
+    expect(threadTweets.length).toBeGreaterThan(0);
+  });
+
+  it('mentions returns JSON array', async () => {
+    const mentions = await runBird(
+      [...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'mentions', '-n', '10', '--json'],
+      {
+        timeoutMs: 45_000,
+      },
+    );
+    expect(mentions.exitCode).toBe(0);
+    const mentionTweets = parseJson<Array<{ id?: string }>>(mentions.stdout);
+    expect(Array.isArray(mentionTweets)).toBe(true);
+  });
+
+  it('bookmarks returns JSON array', async () => {
+    const bookmarks = await runBird(
+      [...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'bookmarks', '-n', '10', '--json'],
+      {
+        timeoutMs: 45_000,
+      },
+    );
+    expect(bookmarks.exitCode).toBe(0);
+    const bookmarkTweets = parseJson<Array<{ id?: string }>>(bookmarks.stdout);
+    expect(Array.isArray(bookmarkTweets)).toBe(true);
+  });
+
+  it('bookmarks --folder-id works (opt-in)', async () => {
+    const folderId = (process.env.BIRD_LIVE_BOOKMARK_FOLDER_ID ?? '').trim();
+    if (!folderId) {
+      return;
+    }
+    const bookmarks = await runBird(
+      [...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'bookmarks', '--folder-id', folderId, '-n', '10', '--json'],
+      { timeoutMs: 45_000 },
+    );
+    expect(bookmarks.exitCode).toBe(0);
+    const bookmarkTweets = parseJson<Array<{ id?: string }>>(bookmarks.stdout);
+    expect(Array.isArray(bookmarkTweets)).toBe(true);
+  });
+
+  it('likes returns JSON array', async () => {
+    const likes = await runBird([...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'likes', '-n', '10', '--json'], {
+      timeoutMs: 45_000,
+    });
+    expect(likes.exitCode).toBe(0);
+    const likeTweets = parseJson<Array<{ id?: string }>>(likes.stdout);
+    expect(Array.isArray(likeTweets)).toBe(true);
+  });
+
+  it('following returns JSON array', async () => {
+    const following = await runBird(
+      [...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'following', '--user', userId, '-n', '10', '--json'],
+      {
+        timeoutMs: 45_000,
+      },
+    );
+    expect(following.exitCode).toBe(0);
+    const followingUsers = parseJson<Array<{ id?: string; username?: string }>>(following.stdout);
+    expect(Array.isArray(followingUsers)).toBe(true);
+  });
+
+  it('followers returns JSON array', async () => {
+    const followers = await runBird(
+      [...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'followers', '--user', userId, '-n', '10', '--json'],
+      {
+        timeoutMs: 45_000,
+      },
+    );
+    expect(followers.exitCode).toBe(0);
+    const followerUsers = parseJson<Array<{ id?: string; username?: string }>>(followers.stdout);
+    expect(Array.isArray(followerUsers)).toBe(true);
+  });
+
+  it('user-tweets returns JSON array', async () => {
+    // Use a known active account for reliable testing (authenticated user may have no tweets)
+    const testHandle = process.env.BIRD_LIVE_USER_TWEETS_HANDLE || 'X';
+    const userTweets = await runBird(
+      [...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'user-tweets', testHandle, '-n', '5', '--json'],
+      {
+        timeoutMs: 45_000,
+      },
+    );
+    expect(userTweets.exitCode).toBe(0);
+    const tweets = parseJson<Array<{ id?: string; author?: { username?: string } }>>(userTweets.stdout);
+    expect(Array.isArray(tweets)).toBe(true);
+    expect(tweets.length).toBeGreaterThan(0);
+    const handleLower = testHandle.toLowerCase();
+    expect(tweets.some((t) => t.author?.username?.toLowerCase() === handleLower)).toBe(true);
+  });
+
+  it('user-tweets paged JSON returns { tweets, nextCursor }', async () => {
+    const testHandle =
+      process.env.BIRD_LIVE_USER_TWEETS_PAGED_HANDLE ?? process.env.BIRD_LIVE_USER_TWEETS_HANDLE ?? 'X';
+    const userTweets = await runBird(
+      [
+        ...baseArgs,
+        '--cookie-timeout',
+        cookieTimeoutArg,
+        'user-tweets',
+        testHandle,
+        '-n',
+        '50',
+        '--max-pages',
+        '3',
+        '--delay',
+        '0',
+        '--json',
+      ],
+      {
+        timeoutMs: 45_000,
+      },
+    );
+    expect(userTweets.exitCode).toBe(0);
+    const payload = parseJson<{ tweets?: Array<{ id?: string }>; nextCursor?: string | null }>(userTweets.stdout);
+    expect(Array.isArray(payload.tweets)).toBe(true);
+    expect(payload.tweets?.length).toBeGreaterThan(0);
+    expect(payload.tweets?.[0]?.id?.length).toBeGreaterThan(0);
+  });
+
+  it('query-ids returns JSON', async () => {
+    const queryIds = await runBird([...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'query-ids', '--json'], {
+      timeoutMs: 60_000,
+    });
+    expect(queryIds.exitCode).toBe(0);
+    const snapshot = parseJson<{ cached?: boolean; ids?: Record<string, string> }>(queryIds.stdout);
+    expect(typeof snapshot.cached).toBe('boolean');
+  });
+
+  it('query-ids --fresh works (opt-in)', async () => {
+    if (process.env.BIRD_LIVE_QUERY_IDS_FRESH !== '1') {
+      return;
+    }
+    const queryIds = await runBird([...baseArgs, 'query-ids', '--fresh', '--json'], { timeoutMs: 5 * 60_000 });
+    expect(queryIds.exitCode).toBe(0);
+    const snapshot = parseJson<{ cached?: boolean; ids?: Record<string, string> }>(queryIds.stdout);
+    expect(snapshot.cached).toBe(true);
+    expect(snapshot.ids && Object.keys(snapshot.ids).length).toBeGreaterThan(0);
+  });
+
+  it('long-form tweet (article) extracts rich content (opt-in)', async () => {
+    const longformTweetId = (process.env.BIRD_LIVE_LONGFORM_TWEET_ID ?? '').trim();
+    if (!longformTweetId) {
+      // Skip unless explicitly provided - long-form tweets may be deleted/unavailable
+      return;
+    }
+    const read = await runBird([...baseArgs, '--cookie-timeout', cookieTimeoutArg, 'read', longformTweetId, '--json'], {
+      timeoutMs: 45_000,
+    });
+    expect(read.exitCode).toBe(0);
+    const tweet = parseJson<{ id?: string; text?: string }>(read.stdout);
+    expect(tweet.id).toBe(longformTweetId);
+    // Long-form tweets (articles) typically have substantial content (>500 chars)
+    // This verifies the article content is being extracted, not just a stub
+    expect(tweet.text?.length).toBeGreaterThan(500);
+  });
+});

tests/map-tweet-article.test.ts

@@ -0,0 +1,73 @@
+import { describe, expect, it } from 'vitest';
+import type { GraphqlTweetResult } from '../src/lib/twitter-client-types.js';
+import { mapTweetResult } from '../src/lib/twitter-client-utils.js';
+
+describe('mapTweetResult article', () => {
+  const makeUserResult = () => ({
+    core: {
+      user_results: {
+        result: {
+          rest_id: 'u1',
+          legacy: { screen_name: 'alice', name: 'Alice' },
+        },
+      },
+    },
+  });
+
+  it('includes extracted article metadata on mapped tweet', () => {
+    const result: GraphqlTweetResult = {
+      rest_id: '1',
+      legacy: {
+        full_text: 'Check out my article',
+      },
+      article: {
+        article_results: {
+          result: {
+            title: 'Building Context Graphs for GTM',
+            preview_text: 'Foundation Capital recently argued...',
+          },
+        },
+      },
+      ...makeUserResult(),
+    } as GraphqlTweetResult;
+
+    const mapped = mapTweetResult(result, 0);
+    expect(mapped).toBeDefined();
+    expect(mapped?.article).toEqual({
+      title: 'Building Context Graphs for GTM',
+      previewText: 'Foundation Capital recently argued...',
+    });
+  });
+
+  it('omits article when none present', () => {
+    const result: GraphqlTweetResult = {
+      rest_id: '2',
+      legacy: { full_text: 'no article' },
+      ...makeUserResult(),
+    };
+
+    const mapped = mapTweetResult(result, 0);
+    expect(mapped?.article).toBeUndefined();
+  });
+
+  it('includes article with only title when no preview_text', () => {
+    const result: GraphqlTweetResult = {
+      rest_id: '3',
+      legacy: { full_text: 'article link' },
+      article: {
+        article_results: {
+          result: {
+            title: 'My Article Title',
+          },
+        },
+      },
+      ...makeUserResult(),
+    };
+
+    const mapped = mapTweetResult(result, 0);
+    expect(mapped?.article).toEqual({
+      title: 'My Article Title',
+      previewText: undefined,
+    });
+  });
+});

tests/map-tweet-media.test.ts

@@ -0,0 +1,61 @@
+import { describe, expect, it } from 'vitest';
+import type { GraphqlTweetResult } from '../src/lib/twitter-client-types.js';
+import { mapTweetResult } from '../src/lib/twitter-client-utils.js';
+
+describe('mapTweetResult media', () => {
+  const makeUserResult = () => ({
+    core: {
+      user_results: {
+        result: {
+          rest_id: 'u1',
+          legacy: { screen_name: 'alice', name: 'Alice' },
+        },
+      },
+    },
+  });
+
+  it('includes extracted media on mapped tweet', () => {
+    const result: GraphqlTweetResult = {
+      rest_id: '1',
+      legacy: {
+        full_text: 'hello',
+        extended_entities: {
+          media: [
+            {
+              type: 'photo',
+              media_url_https: 'https://pbs.twimg.com/media/test.jpg',
+              sizes: {
+                large: { w: 800, h: 600, resize: 'fit' },
+                small: { w: 320, h: 240, resize: 'fit' },
+              },
+            },
+          ],
+        },
+      },
+      ...makeUserResult(),
+    };
+
+    const mapped = mapTweetResult(result, 0);
+    expect(mapped).toBeDefined();
+    const media = mapped?.media ?? [];
+    expect(media).toHaveLength(1);
+    expect(media[0]).toEqual({
+      type: 'photo',
+      url: 'https://pbs.twimg.com/media/test.jpg',
+      width: 800,
+      height: 600,
+      previewUrl: 'https://pbs.twimg.com/media/test.jpg:small',
+    });
+  });
+
+  it('omits media when none present', () => {
+    const result: GraphqlTweetResult = {
+      rest_id: '2',
+      legacy: { full_text: 'no media' },
+      ...makeUserResult(),
+    };
+
+    const mapped = mapTweetResult(result, 0);
+    expect(mapped?.media).toBeUndefined();
+  });
+});

tests/normalize-handle.test.ts

@@ -1,6 +1,8 @@
 import { describe, expect, it } from 'vitest';
 import { mentionsQueryFromUserOption, normalizeHandle } from '../src/lib/normalize-handle.js';
 
+const INVALID_HANDLE_REGEX = /Invalid --user handle/;
+
 describe('normalizeHandle', () => {
   it('accepts bare handle', () => {
     expect(normalizeHandle('steipete')).toBe('steipete');
@@ -36,6 +38,6 @@ describe('mentionsQueryFromUserOption', () => {
   it('returns error for invalid handle', () => {
     const result = mentionsQueryFromUserOption('@stei-pete');
     expect(result.query).toBeNull();
-    expect(result.error).toMatch(/Invalid --user handle/);
+    expect(result.error).toMatch(INVALID_HANDLE_REGEX);
   });
 });

tests/output.test.ts

@@ -1,22 +1,30 @@
 import { describe, expect, it } from 'vitest';
+import { createCliContext } from '../src/cli/shared.js';
 import {
   formatStatsLine,
   formatTweetUrlLine,
+  hyperlink,
   labelPrefix,
   resolveOutputConfigFromArgv,
   resolveOutputConfigFromCommander,
   statusPrefix,
 } from '../src/lib/output.js';
+import type { TweetData } from '../src/lib/twitter-client-types.js';
 
 describe('output', () => {
-  it('defaults to emoji + color on TTY', () => {
+  it('defaults to emoji + color + hyperlinks on TTY', () => {
     const cfg = resolveOutputConfigFromArgv([], {}, true);
-    expect(cfg).toEqual({ plain: false, emoji: true, color: true });
+    expect(cfg).toEqual({ plain: false, emoji: true, color: true, hyperlinks: true });
   });
 
-  it('plain disables emoji + color', () => {
+  it('disables hyperlinks on non-TTY', () => {
+    const cfg = resolveOutputConfigFromArgv([], {}, false);
+    expect(cfg.hyperlinks).toBe(false);
+  });
+
+  it('plain disables emoji + color + hyperlinks', () => {
     const cfg = resolveOutputConfigFromArgv(['--plain'], {}, true);
-    expect(cfg).toEqual({ plain: true, emoji: false, color: false });
+    expect(cfg).toEqual({ plain: true, emoji: false, color: false, hyperlinks: false });
     expect(statusPrefix('ok', cfg)).toBe('[ok] ');
     expect(labelPrefix('url', cfg)).toBe('url: ');
   });
@@ -33,7 +41,7 @@ describe('output', () => {
 
   it('--no-color disables colors', () => {
     const cfg = resolveOutputConfigFromArgv(['--no-color'], {}, true);
-    expect(cfg).toEqual({ plain: false, emoji: true, color: false });
+    expect(cfg).toEqual({ plain: false, emoji: true, color: false, hyperlinks: true });
   });
 
   it('--no-emoji switches to text prefixes', () => {
@@ -44,32 +52,112 @@ describe('output', () => {
 
   it('commander opts override defaults', () => {
     const cfg = resolveOutputConfigFromCommander({ emoji: false, color: false }, {}, true);
-    expect(cfg).toEqual({ plain: false, emoji: false, color: false });
+    expect(cfg).toEqual({ plain: false, emoji: false, color: false, hyperlinks: true });
     expect(statusPrefix('info', cfg)).toBe('Info: ');
     expect(labelPrefix('date', cfg)).toBe('Date: ');
   });
 
   it('commander plain wins over emoji/color', () => {
     const cfg = resolveOutputConfigFromCommander({ plain: true, emoji: true, color: true }, {}, true);
-    expect(cfg).toEqual({ plain: true, emoji: false, color: false });
+    expect(cfg).toEqual({ plain: true, emoji: false, color: false, hyperlinks: false });
+  });
+
+  it('commander disables hyperlinks on non-TTY', () => {
+    const cfg = resolveOutputConfigFromCommander({}, {}, false);
+    expect(cfg.hyperlinks).toBe(false);
   });
 
   it('formats stats line for all modes', () => {
     const stats = { likeCount: null, retweetCount: undefined, replyCount: 2 };
 
-    expect(formatStatsLine(stats, { plain: true, emoji: false, color: false })).toBe(
+    expect(formatStatsLine(stats, { plain: true, emoji: false, color: false, hyperlinks: false })).toBe(
       'likes: 0  retweets: 0  replies: 2',
     );
-    expect(formatStatsLine(stats, { plain: false, emoji: false, color: false })).toBe('Likes 0  Retweets 0  Replies 2');
-    expect(formatStatsLine(stats, { plain: false, emoji: true, color: false })).toBe('❤️ 0  🔁 0  💬 2');
+    expect(formatStatsLine(stats, { plain: false, emoji: false, color: false, hyperlinks: false })).toBe(
+      'Likes 0  Retweets 0  Replies 2',
+    );
+    expect(formatStatsLine(stats, { plain: false, emoji: true, color: false, hyperlinks: false })).toBe(
+      '❤️ 0  🔁 0  💬 2',
+    );
   });
 
   it('always includes tweet URL in all modes', () => {
     const id = '1234567890';
     const url = `https://x.com/i/status/${id}`;
 
-    expect(formatTweetUrlLine(id, { plain: true, emoji: false, color: false })).toContain(url);
-    expect(formatTweetUrlLine(id, { plain: false, emoji: false, color: false })).toContain(url);
-    expect(formatTweetUrlLine(id, { plain: false, emoji: true, color: false })).toContain(url);
+    expect(formatTweetUrlLine(id, { plain: true, emoji: false, color: false, hyperlinks: false })).toContain(url);
+    expect(formatTweetUrlLine(id, { plain: false, emoji: false, color: false, hyperlinks: false })).toContain(url);
+    expect(formatTweetUrlLine(id, { plain: false, emoji: true, color: false, hyperlinks: true })).toContain(url);
+  });
+
+  it('hyperlink returns plain text when hyperlinks disabled', () => {
+    const cfg = { plain: true, emoji: false, color: false, hyperlinks: false };
+    expect(hyperlink('https://x.com/test', undefined, cfg)).toBe('https://x.com/test');
+  });
+
+  it('hyperlink returns plain text on non-TTY (hyperlinks: false)', () => {
+    const cfg = { plain: false, emoji: true, color: false, hyperlinks: false };
+    expect(hyperlink('https://x.com/test', undefined, cfg)).toBe('https://x.com/test');
+  });
+
+  it('hyperlink wraps URL with OSC 8 escapes when hyperlinks enabled', () => {
+    const cfg = { plain: false, emoji: true, color: true, hyperlinks: true };
+    const result = hyperlink('https://x.com/test', undefined, cfg);
+    expect(result).toContain('\x1b]8;;');
+    expect(result).toContain('\x07');
+  });
+
+  it('hyperlink uses custom display text', () => {
+    const cfg = { plain: false, emoji: true, color: true, hyperlinks: true };
+    const result = hyperlink('https://x.com/test', 'Click here', cfg);
+    expect(result).toContain('Click here');
+    expect(result).toContain('\x1b]8;;https://x.com/test\x07');
+  });
+
+  it('hyperlink strips OSC control characters from url and text', () => {
+    const cfg = { plain: false, emoji: true, color: true, hyperlinks: true };
+    const result = hyperlink('https://x.com/\u001btest\u0007', 'Hi\u001b\u0007', cfg);
+    expect(result).not.toContain('\u001btest\u0007');
+    expect(result).not.toContain('Hi\u001b\u0007');
+  });
+
+  it('printTweets respects emoji toggle for media/article/quotes', () => {
+    const tweet: TweetData = {
+      id: '1',
+      text: 'hello world',
+      author: { username: 'alice', name: 'Alice' },
+      media: [{ type: 'photo', url: 'https://img/test.jpg' }],
+      article: { title: 'Article title', previewText: 'Preview' },
+      quotedTweet: {
+        id: '2',
+        text: 'quoted text',
+        author: { username: 'bob', name: 'Bob' },
+        media: [{ type: 'video', url: 'https://vid/test.mp4' }],
+      },
+    };
+
+    const ctxEmoji = createCliContext([], {}, true);
+    const logEmoji = vi.spyOn(console, 'log').mockImplementation(() => {});
+    ctxEmoji.printTweets([tweet]);
+    const emojiOutput = logEmoji.mock.calls.flat().join('\n');
+    logEmoji.mockRestore();
+
+    expect(emojiOutput).toContain('📰 Article title');
+    expect(emojiOutput).toContain('🖼️ https://img/test.jpg');
+    expect(emojiOutput).toContain('┌─ QT @bob:');
+    expect(emojiOutput).toContain('🎬 https://vid/test.mp4');
+
+    const ctxPlain = createCliContext(['--plain'], {}, true);
+    const logPlain = vi.spyOn(console, 'log').mockImplementation(() => {});
+    ctxPlain.printTweets([tweet]);
+    const plainOutput = logPlain.mock.calls.flat().join('\n');
+    logPlain.mockRestore();
+
+    expect(plainOutput).toContain('Article: Article title');
+    expect(plainOutput).toContain('PHOTO: https://img/test.jpg');
+    expect(plainOutput).toContain('QT @bob:');
+    expect(plainOutput).toContain('VIDEO: https://vid/test.mp4');
+    expect(plainOutput).not.toContain('📰');
+    expect(plainOutput).not.toContain('🖼️');
   });
 });

tests/render-content-state.test.ts

@@ -0,0 +1,351 @@
+import { describe, expect, it } from 'vitest';
+import { renderContentState } from '../src/lib/twitter-client-utils.js';
+
+describe('renderContentState', () => {
+  it('returns undefined for undefined input', () => {
+    expect(renderContentState(undefined)).toBeUndefined();
+  });
+
+  it('returns undefined for empty blocks', () => {
+    expect(renderContentState({ blocks: [], entityMap: [] })).toBeUndefined();
+  });
+
+  it('renders unstyled blocks as plain paragraphs', () => {
+    const result = renderContentState({
+      blocks: [
+        { key: '1', type: 'unstyled', text: 'First paragraph', entityRanges: [], inlineStyleRanges: [] },
+        { key: '2', type: 'unstyled', text: 'Second paragraph', entityRanges: [], inlineStyleRanges: [] },
+      ],
+      entityMap: [],
+    });
+    expect(result).toBe('First paragraph\n\nSecond paragraph');
+  });
+
+  it('renders header-one as # heading', () => {
+    const result = renderContentState({
+      blocks: [{ key: '1', type: 'header-one', text: 'Main Title', entityRanges: [], inlineStyleRanges: [] }],
+      entityMap: [],
+    });
+    expect(result).toBe('# Main Title');
+  });
+
+  it('renders header-two as ## heading', () => {
+    const result = renderContentState({
+      blocks: [{ key: '1', type: 'header-two', text: 'Section Title', entityRanges: [], inlineStyleRanges: [] }],
+      entityMap: [],
+    });
+    expect(result).toBe('## Section Title');
+  });
+
+  it('renders header-three as ### heading', () => {
+    const result = renderContentState({
+      blocks: [{ key: '1', type: 'header-three', text: 'Subsection', entityRanges: [], inlineStyleRanges: [] }],
+      entityMap: [],
+    });
+    expect(result).toBe('### Subsection');
+  });
+
+  it('renders unordered-list-item as bullet points', () => {
+    const result = renderContentState({
+      blocks: [
+        { key: '1', type: 'unordered-list-item', text: 'Item one', entityRanges: [], inlineStyleRanges: [] },
+        { key: '2', type: 'unordered-list-item', text: 'Item two', entityRanges: [], inlineStyleRanges: [] },
+      ],
+      entityMap: [],
+    });
+    expect(result).toBe('- Item one\n\n- Item two');
+  });
+
+  it('renders ordered-list-item with incrementing numbers', () => {
+    const result = renderContentState({
+      blocks: [
+        { key: '1', type: 'ordered-list-item', text: 'First step', entityRanges: [], inlineStyleRanges: [] },
+        { key: '2', type: 'ordered-list-item', text: 'Second step', entityRanges: [], inlineStyleRanges: [] },
+        { key: '3', type: 'ordered-list-item', text: 'Third step', entityRanges: [], inlineStyleRanges: [] },
+      ],
+      entityMap: [],
+    });
+    expect(result).toBe('1. First step\n\n2. Second step\n\n3. Third step');
+  });
+
+  it('resets ordered list counter after non-list block', () => {
+    const result = renderContentState({
+      blocks: [
+        { key: '1', type: 'ordered-list-item', text: 'First', entityRanges: [], inlineStyleRanges: [] },
+        { key: '2', type: 'ordered-list-item', text: 'Second', entityRanges: [], inlineStyleRanges: [] },
+        { key: '3', type: 'unstyled', text: 'Paragraph break', entityRanges: [], inlineStyleRanges: [] },
+        { key: '4', type: 'ordered-list-item', text: 'New first', entityRanges: [], inlineStyleRanges: [] },
+      ],
+      entityMap: [],
+    });
+    expect(result).toBe('1. First\n\n2. Second\n\nParagraph break\n\n1. New first');
+  });
+
+  it('renders blockquote with > prefix', () => {
+    const result = renderContentState({
+      blocks: [{ key: '1', type: 'blockquote', text: 'A wise quote', entityRanges: [], inlineStyleRanges: [] }],
+      entityMap: [],
+    });
+    expect(result).toBe('> A wise quote');
+  });
+
+  it('renders MARKDOWN entity as code block', () => {
+    const result = renderContentState({
+      blocks: [
+        {
+          key: '1',
+          type: 'atomic',
+          text: ' ',
+          entityRanges: [{ key: 0, offset: 0, length: 1 }],
+          inlineStyleRanges: [],
+        },
+      ],
+      entityMap: [
+        {
+          key: '0',
+          value: {
+            type: 'MARKDOWN',
+            mutability: 'Mutable',
+            data: { markdown: '```bash\necho "hello"\n```' },
+          },
+        },
+      ],
+    });
+    expect(result).toBe('```bash\necho "hello"\n```');
+  });
+
+  it('handles entityMap object form', () => {
+    const result = renderContentState({
+      blocks: [
+        {
+          key: '1',
+          type: 'atomic',
+          text: ' ',
+          entityRanges: [{ key: 0, offset: 0, length: 1 }],
+        },
+      ],
+      entityMap: {
+        0: {
+          type: 'MARKDOWN',
+          mutability: 'Mutable',
+          data: { markdown: '```js\nconsole.log("ok")\n```' },
+        },
+      },
+    });
+    expect(result).toBe('```js\nconsole.log("ok")\n```');
+  });
+
+  it('renders DIVIDER entity as horizontal rule', () => {
+    const result = renderContentState({
+      blocks: [
+        {
+          key: '1',
+          type: 'atomic',
+          text: ' ',
+          entityRanges: [{ key: 0, offset: 0, length: 1 }],
+          inlineStyleRanges: [],
+        },
+      ],
+      entityMap: [
+        {
+          key: '0',
+          value: {
+            type: 'DIVIDER',
+            mutability: 'Immutable',
+            data: {},
+          },
+        },
+      ],
+    });
+    expect(result).toBe('---');
+  });
+
+  it('renders TWEET entity with URL', () => {
+    const result = renderContentState({
+      blocks: [
+        {
+          key: '1',
+          type: 'atomic',
+          text: ' ',
+          entityRanges: [{ key: 0, offset: 0, length: 1 }],
+          inlineStyleRanges: [],
+        },
+      ],
+      entityMap: [
+        {
+          key: '0',
+          value: {
+            type: 'TWEET',
+            mutability: 'Immutable',
+            data: { tweetId: '1234567890' },
+          },
+        },
+      ],
+    });
+    expect(result).toBe('[Embedded Tweet: https://x.com/i/status/1234567890]');
+  });
+
+  it('renders LINK entity in atomic block', () => {
+    const result = renderContentState({
+      blocks: [
+        {
+          key: '1',
+          type: 'atomic',
+          text: ' ',
+          entityRanges: [{ key: 0, offset: 0, length: 1 }],
+          inlineStyleRanges: [],
+        },
+      ],
+      entityMap: [
+        {
+          key: '0',
+          value: {
+            type: 'LINK',
+            mutability: 'Mutable',
+            data: { url: 'https://example.com' },
+          },
+        },
+      ],
+    });
+    expect(result).toBe('[Link: https://example.com]');
+  });
+
+  it('renders inline LINK entity as markdown link', () => {
+    const result = renderContentState({
+      blocks: [
+        {
+          key: '1',
+          type: 'unstyled',
+          text: 'Check out this link for more info',
+          entityRanges: [{ key: 0, offset: 15, length: 4 }],
+          inlineStyleRanges: [],
+        },
+      ],
+      entityMap: [
+        {
+          key: '0',
+          value: {
+            type: 'LINK',
+            mutability: 'Mutable',
+            data: { url: 'https://example.com' },
+          },
+        },
+      ],
+    });
+    expect(result).toBe('Check out this [link](https://example.com) for more info');
+  });
+
+  it('renders IMAGE entity as placeholder', () => {
+    const result = renderContentState({
+      blocks: [
+        {
+          key: '1',
+          type: 'atomic',
+          text: ' ',
+          entityRanges: [{ key: 0, offset: 0, length: 1 }],
+          inlineStyleRanges: [],
+        },
+      ],
+      entityMap: [
+        {
+          key: '0',
+          value: {
+            type: 'IMAGE',
+            mutability: 'Immutable',
+            data: {},
+          },
+        },
+      ],
+    });
+    expect(result).toBe('[Image]');
+  });
+
+  it('handles complex document with mixed content', () => {
+    const result = renderContentState({
+      blocks: [
+        { key: '1', type: 'unstyled', text: 'Introduction paragraph.', entityRanges: [], inlineStyleRanges: [] },
+        { key: '2', type: 'header-two', text: 'Getting Started', entityRanges: [], inlineStyleRanges: [] },
+        { key: '3', type: 'ordered-list-item', text: 'Install dependencies', entityRanges: [], inlineStyleRanges: [] },
+        { key: '4', type: 'ordered-list-item', text: 'Run the script', entityRanges: [], inlineStyleRanges: [] },
+        {
+          key: '5',
+          type: 'atomic',
+          text: ' ',
+          entityRanges: [{ key: 0, offset: 0, length: 1 }],
+          inlineStyleRanges: [],
+        },
+        { key: '6', type: 'unstyled', text: 'Conclusion.', entityRanges: [], inlineStyleRanges: [] },
+      ],
+      entityMap: [
+        {
+          key: '0',
+          value: {
+            type: 'MARKDOWN',
+            mutability: 'Mutable',
+            data: { markdown: '```bash\nnpm install\n```' },
+          },
+        },
+      ],
+    });
+
+    expect(result).toBe(
+      'Introduction paragraph.\n\n' +
+        '## Getting Started\n\n' +
+        '1. Install dependencies\n\n' +
+        '2. Run the script\n\n' +
+        '```bash\nnpm install\n```\n\n' +
+        'Conclusion.',
+    );
+  });
+
+  it('skips empty text blocks', () => {
+    const result = renderContentState({
+      blocks: [
+        { key: '1', type: 'unstyled', text: 'Content', entityRanges: [], inlineStyleRanges: [] },
+        { key: '2', type: 'unstyled', text: '   ', entityRanges: [], inlineStyleRanges: [] },
+        { key: '3', type: 'unstyled', text: '', entityRanges: [], inlineStyleRanges: [] },
+        { key: '4', type: 'unstyled', text: 'More content', entityRanges: [], inlineStyleRanges: [] },
+      ],
+      entityMap: [],
+    });
+    expect(result).toBe('Content\n\nMore content');
+  });
+
+  it('handles missing entityRanges on text blocks', () => {
+    const result = renderContentState({
+      blocks: [{ key: '1', type: 'unstyled', text: 'Content' }],
+      entityMap: [],
+    });
+    expect(result).toBe('Content');
+  });
+
+  it('handles atomic block with missing entity gracefully', () => {
+    const result = renderContentState({
+      blocks: [
+        { key: '1', type: 'unstyled', text: 'Before', entityRanges: [], inlineStyleRanges: [] },
+        {
+          key: '2',
+          type: 'atomic',
+          text: ' ',
+          entityRanges: [{ key: 99, offset: 0, length: 1 }],
+          inlineStyleRanges: [],
+        },
+        { key: '3', type: 'unstyled', text: 'After', entityRanges: [], inlineStyleRanges: [] },
+      ],
+      entityMap: [],
+    });
+    expect(result).toBe('Before\n\nAfter');
+  });
+
+  it('handles atomic block with no entityRanges gracefully', () => {
+    const result = renderContentState({
+      blocks: [
+        { key: '1', type: 'unstyled', text: 'Before', entityRanges: [], inlineStyleRanges: [] },
+        { key: '2', type: 'atomic', text: ' ', entityRanges: [], inlineStyleRanges: [] },
+        { key: '3', type: 'unstyled', text: 'After', entityRanges: [], inlineStyleRanges: [] },
+      ],
+      entityMap: [],
+    });
+    expect(result).toBe('Before\n\nAfter');
+  });
+});

tests/runtime-features.test.ts

@@ -0,0 +1,129 @@
+import { randomUUID } from 'node:crypto';
+import { mkdir, readFile, writeFile } from 'node:fs/promises';
+import os from 'node:os';
+import path from 'node:path';
+import { afterEach, describe, expect, it } from 'vitest';
+import { clearFeatureOverridesCache, refreshFeatureOverridesCache } from '../src/lib/runtime-features.js';
+import { buildLikesFeatures, buildListsFeatures, buildSearchFeatures } from '../src/lib/twitter-client-features.js';
+
+describe('runtime-features', () => {
+  afterEach(() => {
+    delete process.env.BIRD_FEATURES_JSON;
+    delete process.env.BIRD_FEATURES_CACHE;
+    delete process.env.BIRD_FEATURES_PATH;
+    clearFeatureOverridesCache();
+  });
+
+  it('applies global and set overrides from env json', () => {
+    process.env.BIRD_FEATURES_JSON = JSON.stringify({
+      global: {
+        global_flag: true,
+        ignored: 'nope',
+      },
+      sets: {
+        search: {
+          global_flag: false,
+          search_only: true,
+          bad: 1,
+        },
+        likes: {
+          likes_only: true,
+        },
+        lists: {
+          responsive_web_text_conversations_enabled: true,
+        },
+      },
+    });
+
+    clearFeatureOverridesCache();
+    const search = buildSearchFeatures();
+    expect(search.global_flag).toBe(false);
+    expect(search.search_only).toBe(true);
+    expect(search.bad).toBeUndefined();
+
+    const likes = buildLikesFeatures();
+    expect(likes.global_flag).toBe(true);
+    expect(likes.likes_only).toBe(true);
+
+    const lists = buildListsFeatures();
+    expect(lists.responsive_web_text_conversations_enabled).toBe(true);
+  });
+
+  it('refresh merges defaults with existing cache', async () => {
+    const cacheDir = path.join(os.tmpdir(), `bird-test-${randomUUID()}`);
+    await mkdir(cacheDir, { recursive: true });
+    const cachePath = path.join(cacheDir, 'features.json');
+
+    await writeFile(
+      cachePath,
+      JSON.stringify(
+        {
+          global: {
+            existing_flag: true,
+          },
+          sets: {
+            search: {
+              existing_search: false,
+            },
+          },
+        },
+        null,
+        2,
+      ),
+    );
+
+    process.env.BIRD_FEATURES_PATH = cachePath;
+    await refreshFeatureOverridesCache();
+
+    const raw = await readFile(cachePath, 'utf8');
+    const parsed = JSON.parse(raw) as {
+      global?: Record<string, boolean>;
+      sets?: Record<string, Record<string, boolean>>;
+    };
+
+    expect(parsed.global?.existing_flag).toBe(true);
+    expect(parsed.global?.responsive_web_grok_annotations_enabled).toBe(false);
+    expect(parsed.sets?.search?.existing_search).toBe(false);
+  });
+
+  it('applies overrides from cache file', async () => {
+    const cacheDir = path.join(os.tmpdir(), `bird-test-${randomUUID()}`);
+    await mkdir(cacheDir, { recursive: true });
+    const cachePath = path.join(cacheDir, 'features.json');
+
+    await writeFile(
+      cachePath,
+      JSON.stringify(
+        {
+          global: {
+            file_flag: true,
+          },
+          sets: {
+            search: {
+              file_search: true,
+            },
+          },
+        },
+        null,
+        2,
+      ),
+    );
+
+    process.env.BIRD_FEATURES_PATH = cachePath;
+    clearFeatureOverridesCache();
+
+    const search = buildSearchFeatures();
+    expect(search.file_flag).toBe(true);
+    expect(search.file_search).toBe(true);
+  });
+
+  it('includes required lists API feature flags', () => {
+    const features = buildListsFeatures();
+    expect(features.responsive_web_graphql_exclude_directive_enabled).toBe(true);
+    expect(features.blue_business_profile_image_shape_enabled).toBe(false);
+    expect(features.responsive_web_text_conversations_enabled).toBe(false);
+    expect(features.tweetypie_unmention_optimization_enabled).toBe(true);
+    expect(features.vibe_api_enabled).toBe(false);
+    expect(features.interactive_text_enabled).toBe(false);
+  });
+});

tests/runtime-query-ids.test.ts

@@ -1,5 +1,5 @@
 import { randomUUID } from 'node:crypto';
-import { mkdir, readFile } from 'node:fs/promises';
+import { mkdir, readFile, writeFile } from 'node:fs/promises';
 import os from 'node:os';
 import path from 'node:path';
 import { afterEach, describe, expect, it, vi } from 'vitest';
@@ -8,6 +8,7 @@ import { createRuntimeQueryIdStore } from '../src/lib/runtime-query-ids.js';
 describe('runtime-query-ids', () => {
   afterEach(() => {
     vi.unstubAllGlobals();
+    delete process.env.BIRD_QUERY_IDS_CACHE;
   });
 
   it('refreshes IDs by scanning discovered bundles and persists cache', async () => {
@@ -60,4 +61,83 @@ describe('runtime-query-ids', () => {
     const parsed = JSON.parse(raw) as { ids?: Record<string, string> };
     expect(parsed.ids?.SearchTimeline).toBe('EEE');
   });
+
+  it('uses env cache path override and returns fresh snapshot without refreshing', async () => {
+    const cacheDir = path.join(os.tmpdir(), `bird-test-${randomUUID()}`);
+    await mkdir(cacheDir, { recursive: true });
+    const cachePath = path.join(cacheDir, 'query-ids-cache.json');
+    process.env.BIRD_QUERY_IDS_CACHE = cachePath;
+
+    const snapshot = {
+      fetchedAt: new Date().toISOString(),
+      ttlMs: 60_000,
+      ids: { CreateTweet: 'AAA' },
+      discovery: { pages: ['https://x.com/'], bundles: ['main.js'] },
+    };
+    await writeFile(cachePath, JSON.stringify(snapshot), 'utf8');
+
+    const fetchMock = vi.fn();
+    const store = createRuntimeQueryIdStore({ fetchImpl: fetchMock as unknown as typeof fetch });
+    const info = await store.refresh(['CreateTweet']);
+
+    expect(store.cachePath).toBe(cachePath);
+    expect(info?.snapshot.ids.CreateTweet).toBe('AAA');
+    expect(fetchMock).not.toHaveBeenCalled();
+
+    store.clearMemory();
+  });
+
+  it('returns current snapshot when refresh finds no matching operations', async () => {
+    const cacheDir = path.join(os.tmpdir(), `bird-test-${randomUUID()}`);
+    await mkdir(cacheDir, { recursive: true });
+    const cachePath = path.join(cacheDir, 'query-ids.json');
+
+    const snapshot = {
+      fetchedAt: new Date(0).toISOString(),
+      ttlMs: 1,
+      ids: { CreateTweet: 'AAA' },
+      discovery: { pages: ['https://x.com/'], bundles: ['main.test.js'] },
+    };
+    await writeFile(cachePath, JSON.stringify(snapshot), 'utf8');
+
+    const html = `<script src="https://abs.twimg.com/responsive-web/client-web/main.test.js"></script>`;
+    const js = 'console.log("no ops here")';
+
+    const fetchMock = vi.fn(async (url: string | URL) => {
+      const asString = String(url);
+      if (asString.startsWith('https://x.com/')) {
+        return new Response(html, { status: 200 });
+      }
+      if (asString.startsWith('https://abs.twimg.com/')) {
+        return new Response(js, { status: 200 });
+      }
+      return new Response('not found', { status: 404 });
+    });
+
+    const store = createRuntimeQueryIdStore({
+      cachePath,
+      ttlMs: 1,
+      fetchImpl: fetchMock as unknown as typeof fetch,
+    });
+
+    const info = await store.refresh(['CreateTweet']);
+    expect(info?.snapshot.ids.CreateTweet).toBe('AAA');
+  });
+
+  it('throws when no bundles can be discovered', async () => {
+    const cacheDir = path.join(os.tmpdir(), `bird-test-${randomUUID()}`);
+    await mkdir(cacheDir, { recursive: true });
+    const cachePath = path.join(cacheDir, 'query-ids.json');
+
+    const fetchMock = vi.fn(async () => new Response('nope', { status: 500 }));
+
+    const store = createRuntimeQueryIdStore({
+      cachePath,
+      fetchImpl: fetchMock as unknown as typeof fetch,
+    });
+
+    await expect(store.refresh(['CreateTweet'], { force: true })).rejects.toThrow(
+      'No client bundles discovered; x.com layout may have changed.',
+    );
+  });
 });

tests/twitter-client-coverage.api.test.ts

@@ -0,0 +1,439 @@
+import { afterEach, describe, expect, it, vi } from 'vitest';
+import { TwitterClient } from '../src/lib/twitter-client.js';
+
+const validCookies = {
+  authToken: 'test_auth_token',
+  ct0: 'test_ct0_token',
+  cookieHeader: 'auth_token=test_auth_token; ct0=test_ct0_token',
+  source: 'test',
+};
+
+type ResponseLike = {
+  ok: boolean;
+  status: number;
+  json: () => Promise<unknown>;
+  text: () => Promise<string>;
+};
+
+type TwitterClientApiPrivate = TwitterClient & {
+  getBookmarksQueryIds: () => Promise<string[]>;
+  getFollowingQueryIds: () => Promise<string[]>;
+  getFollowersQueryIds: () => Promise<string[]>;
+  getLikesQueryIds: () => Promise<string[]>;
+  getCurrentUser: () => Promise<{
+    success: boolean;
+    user?: { id: string; username: string; name: string };
+    error?: string;
+  }>;
+  getBookmarkFolderQueryIds: () => Promise<string[]>;
+};
+
+const makeResponse = (overrides: Partial<ResponseLike> = {}): ResponseLike => ({
+  ok: true,
+  status: 200,
+  json: async (): Promise<unknown> => ({}),
+  text: async (): Promise<string> => '',
+  ...overrides,
+});
+
+describe('TwitterClient API coverage', () => {
+  const originalFetch = global.fetch;
+
+  afterEach(() => {
+    global.fetch = originalFetch;
+    vi.restoreAllMocks();
+  });
+
+  describe('createTweet fallback paths', () => {
+    it('returns an error when retry response is not ok', async () => {
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(makeResponse({ ok: false, status: 404, text: async () => 'nope' }))
+        .mockResolvedValueOnce(makeResponse({ ok: false, status: 404, text: async () => 'nope' }))
+        .mockResolvedValueOnce(makeResponse({ ok: false, status: 500, text: async () => 'boom' }));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.tweet('hi');
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('HTTP 500');
+    });
+
+    it('returns API errors when retry response contains errors', async () => {
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(makeResponse({ ok: false, status: 404, text: async () => 'nope' }))
+        .mockResolvedValueOnce(makeResponse({ ok: false, status: 404, text: async () => 'nope' }))
+        .mockResolvedValueOnce(
+          makeResponse({
+            json: async () => ({ errors: [{ message: 'rate limited', code: 1 }] }),
+          }),
+        );
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.tweet('hi');
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('rate limited');
+    });
+
+    it('returns an error when retry response has no tweet id', async () => {
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(makeResponse({ ok: false, status: 404, text: async () => 'nope' }))
+        .mockResolvedValueOnce(makeResponse({ ok: false, status: 404, text: async () => 'nope' }))
+        .mockResolvedValueOnce(
+          makeResponse({
+            json: async () => ({ data: { create_tweet: { tweet_results: { result: {} } } } }),
+          }),
+        );
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.tweet('hi');
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('no ID');
+    });
+  });
+
+  describe('search error paths', () => {
+    it('returns an error for non-ok responses', async () => {
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(makeResponse({ ok: false, status: 500, text: async () => 'down' }));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.search('test');
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('HTTP 500');
+    });
+
+    it('returns errors from payloads', async () => {
+      const mockFetch = vi.fn().mockResolvedValueOnce(
+        makeResponse({
+          json: async () => ({ errors: [{ message: 'bad' }] }),
+        }),
+      );
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.search('test');
+
+      expect(result.success).toBe(false);
+      expect(result.error).toBe('bad');
+    });
+
+    it('returns an error when fetching throws', async () => {
+      const mockFetch = vi.fn().mockRejectedValue(new Error('boom'));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.search('test');
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('boom');
+    });
+
+    it('returns the second attempt error after 404s', async () => {
+      const mockFetch = vi.fn().mockResolvedValue(makeResponse({ ok: false, status: 404, text: async () => 'nope' }));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.search('test');
+
+      expect(result.success).toBe(false);
+      expect(result.error).toBe('HTTP 404');
+    });
+  });
+
+  describe('bookmarks error paths', () => {
+    it('returns an error for non-ok responses', async () => {
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(makeResponse({ ok: false, status: 500, text: async () => 'down' }))
+        .mockResolvedValueOnce(makeResponse({ ok: false, status: 500, text: async () => 'down' }))
+        .mockResolvedValueOnce(makeResponse({ ok: false, status: 500, text: async () => 'down' }));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientApiPrivate;
+      clientPrivate.getBookmarksQueryIds = async () => ['test'];
+      const result = await client.getBookmarks(1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('HTTP 500');
+    });
+
+    it('returns API errors from payloads', async () => {
+      const mockFetch = vi.fn().mockResolvedValueOnce(
+        makeResponse({
+          json: async () => ({ errors: [{ message: 'bad' }] }),
+        }),
+      );
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientApiPrivate;
+      clientPrivate.getBookmarksQueryIds = async () => ['test'];
+      const result = await client.getBookmarks(1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toBe('bad');
+    });
+
+    it('returns an error when fetching throws', async () => {
+      const mockFetch = vi.fn().mockRejectedValue(new Error('boom'));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientApiPrivate;
+      clientPrivate.getBookmarksQueryIds = async () => ['test'];
+      const result = await client.getBookmarks(1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('boom');
+    });
+
+    it('returns unknown error when no query ids are available', async () => {
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientApiPrivate;
+      clientPrivate.getBookmarksQueryIds = async () => [];
+
+      const result = await client.getBookmarks(1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toBe('Unknown error fetching bookmarks');
+    });
+
+    it('returns the second attempt error after 404s', async () => {
+      const mockFetch = vi.fn().mockResolvedValue(makeResponse({ ok: false, status: 404, text: async () => 'nope' }));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.getBookmarks(1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toBe('HTTP 404');
+    });
+  });
+
+  describe('following/followers error paths', () => {
+    it('returns an error for non-ok responses', async () => {
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(makeResponse({ ok: false, status: 500, text: async () => 'down' }));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientApiPrivate;
+      clientPrivate.getFollowingQueryIds = async () => ['test'];
+
+      const result = await client.getFollowing('123', 1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('HTTP 500');
+    });
+
+    it('returns API errors from payloads', async () => {
+      const mockFetch = vi.fn().mockResolvedValueOnce(
+        makeResponse({
+          json: async () => ({ errors: [{ message: 'bad' }] }),
+        }),
+      );
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientApiPrivate;
+      clientPrivate.getFollowersQueryIds = async () => ['test'];
+
+      const result = await client.getFollowers('123', 1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toBe('bad');
+    });
+
+    it('returns unknown error when no query ids are available', async () => {
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientApiPrivate;
+      clientPrivate.getFollowingQueryIds = async () => [];
+
+      const result = await client.getFollowing('123', 1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toBe('Unknown error fetching following');
+    });
+
+    it('returns the second attempt error after 404s', async () => {
+      const mockFetch = vi.fn().mockResolvedValue(makeResponse({ ok: false, status: 404, text: async () => 'nope' }));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientApiPrivate;
+      clientPrivate.getFollowersQueryIds = async () => ['test'];
+
+      const result = await client.getFollowers('123', 1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toBe('HTTP 404');
+    });
+  });
+  describe('likes error paths', () => {
+    const stubCurrentUser = async () => ({
+      success: true,
+      user: { id: '123', username: 'tester', name: 'Tester' },
+    });
+
+    it('returns an error for non-ok responses', async () => {
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(makeResponse({ ok: false, status: 500, text: async () => 'down' }));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientApiPrivate;
+      clientPrivate.getCurrentUser = stubCurrentUser;
+      clientPrivate.getLikesQueryIds = async () => ['test'];
+
+      const result = await client.getLikes(1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('HTTP 500');
+    });
+
+    it('returns API errors from payloads', async () => {
+      const mockFetch = vi.fn().mockResolvedValueOnce(
+        makeResponse({
+          json: async () => ({ errors: [{ message: 'bad' }] }),
+        }),
+      );
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientApiPrivate;
+      clientPrivate.getCurrentUser = stubCurrentUser;
+      clientPrivate.getLikesQueryIds = async () => ['test'];
+
+      const result = await client.getLikes(1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toBe('bad');
+    });
+
+    it('returns an error when fetching throws', async () => {
+      const mockFetch = vi.fn().mockRejectedValue(new Error('boom'));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientApiPrivate;
+      clientPrivate.getCurrentUser = stubCurrentUser;
+      clientPrivate.getLikesQueryIds = async () => ['test'];
+
+      const result = await client.getLikes(1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('boom');
+    });
+
+    it('returns unknown error when no query ids are available', async () => {
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientApiPrivate;
+      clientPrivate.getCurrentUser = stubCurrentUser;
+      clientPrivate.getLikesQueryIds = async () => [];
+
+      const result = await client.getLikes(1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toBe('Unknown error fetching likes');
+    });
+
+    it('returns the second attempt error after 404s', async () => {
+      const mockFetch = vi.fn().mockResolvedValue(makeResponse({ ok: false, status: 404, text: async () => 'nope' }));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientApiPrivate;
+      clientPrivate.getCurrentUser = stubCurrentUser;
+      clientPrivate.getLikesQueryIds = async () => ['test'];
+
+      const result = await client.getLikes(1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toBe('HTTP 404');
+    });
+  });
+  describe('bookmark folder error paths', () => {
+    it('returns an error for non-ok responses', async () => {
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(makeResponse({ ok: false, status: 500, text: async () => 'down' }))
+        .mockResolvedValueOnce(makeResponse({ ok: false, status: 500, text: async () => 'down' }))
+        .mockResolvedValueOnce(makeResponse({ ok: false, status: 500, text: async () => 'down' }));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientApiPrivate;
+      clientPrivate.getBookmarkFolderQueryIds = async () => ['test'];
+      const result = await client.getBookmarkFolderTimeline('123', 1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('HTTP 500');
+    });
+
+    it('returns API errors from payloads', async () => {
+      const mockFetch = vi.fn().mockResolvedValueOnce(
+        makeResponse({
+          json: async () => ({ errors: [{ message: 'bad' }] }),
+        }),
+      );
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientApiPrivate;
+      clientPrivate.getBookmarkFolderQueryIds = async () => ['test'];
+      const result = await client.getBookmarkFolderTimeline('123', 1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toBe('bad');
+    });
+
+    it('returns an error when fetching throws', async () => {
+      const mockFetch = vi.fn().mockRejectedValue(new Error('boom'));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientApiPrivate;
+      clientPrivate.getBookmarkFolderQueryIds = async () => ['test'];
+      const result = await client.getBookmarkFolderTimeline('123', 1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('boom');
+    });
+
+    it('returns unknown error when no query ids are available', async () => {
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientApiPrivate;
+      clientPrivate.getBookmarkFolderQueryIds = async () => [];
+
+      const result = await client.getBookmarkFolderTimeline('123', 1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toBe('Unknown error fetching bookmark folder');
+    });
+
+    it('returns the second attempt error after 404s', async () => {
+      const mockFetch = vi.fn().mockResolvedValue(makeResponse({ ok: false, status: 404, text: async () => 'nope' }));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.getBookmarkFolderTimeline('123', 1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toBe('HTTP 404');
+    });
+  });
+});

tests/twitter-client-coverage.core.test.ts

@@ -0,0 +1,331 @@
+import { afterEach, describe, expect, it, vi } from 'vitest';
+import { runtimeQueryIds } from '../src/lib/runtime-query-ids.js';
+import { TwitterClient } from '../src/lib/twitter-client.js';
+
+const validCookies = {
+  authToken: 'test_auth_token',
+  ct0: 'test_ct0_token',
+  cookieHeader: 'auth_token=test_auth_token; ct0=test_ct0_token',
+  source: 'test',
+};
+
+type ResponseLike = {
+  ok: boolean;
+  status: number;
+  json: () => Promise<unknown>;
+  text: () => Promise<string>;
+};
+
+type TwitterClientPrivate = TwitterClient & {
+  refreshQueryIds: () => Promise<void>;
+  fetchWithTimeout: (url: string, init: RequestInit) => Promise<ResponseLike>;
+  ensureClientUserId: () => Promise<void>;
+  getBaseHeaders: () => Record<string, string>;
+  fetchUserArticlePlainText: (userId: string, tweetId: string) => Promise<{ title?: string; plainText?: string }>;
+  fetchTweetDetail: (tweetId: string) => Promise<{ success: true } | { success: false; error: string }>;
+  postStatusUpdate: (input: { text: string }) => Promise<{ success: boolean; error?: string }>;
+};
+
+const makeResponse = (overrides: Partial<ResponseLike> = {}): ResponseLike => ({
+  ok: true,
+  status: 200,
+  json: async (): Promise<unknown> => ({}),
+  text: async (): Promise<string> => '',
+  ...overrides,
+});
+
+describe('TwitterClient core coverage', () => {
+  const originalFetch = global.fetch;
+  const originalNodeEnv = process.env.NODE_ENV;
+
+  afterEach(() => {
+    global.fetch = originalFetch;
+    process.env.NODE_ENV = originalNodeEnv;
+    delete process.env.BIRD_DEBUG_ARTICLE;
+    vi.restoreAllMocks();
+  });
+
+  it('refreshQueryIds calls runtime refresh outside test env', async () => {
+    const client = new TwitterClient({ cookies: validCookies });
+    const refreshSpy = vi.spyOn(runtimeQueryIds, 'refresh').mockResolvedValue(null);
+    process.env.NODE_ENV = 'production';
+
+    const clientPrivate = client as unknown as TwitterClientPrivate;
+    await clientPrivate.refreshQueryIds();
+
+    expect(refreshSpy).toHaveBeenCalled();
+  });
+
+  it('fetchWithTimeout uses an abort signal when timeout is set', async () => {
+    const mockFetch = vi.fn(async (_url: string, init?: RequestInit) => {
+      expect(init?.signal).toBeInstanceOf(AbortSignal);
+      return makeResponse();
+    });
+    global.fetch = mockFetch as unknown as typeof fetch;
+
+    const client = new TwitterClient({ cookies: validCookies, timeoutMs: 5 });
+    const clientPrivate = client as unknown as TwitterClientPrivate;
+    await clientPrivate.fetchWithTimeout('https://example.com', { method: 'GET' });
+
+    expect(mockFetch).toHaveBeenCalledTimes(1);
+  });
+
+  it('returns a not found error when tweet data is missing', async () => {
+    const mockFetch = vi.fn().mockResolvedValueOnce(
+      makeResponse({
+        json: async () => ({
+          data: {
+            threaded_conversation_with_injections_v2: {
+              instructions: [
+                {
+                  entries: [
+                    {
+                      content: {
+                        itemContent: {
+                          tweet_results: {
+                            result: {
+                              rest_id: 'other',
+                              legacy: { full_text: 'nope', created_at: '2024-01-01T00:00:00Z' },
+                              core: { user_results: { result: { legacy: { screen_name: 'user', name: 'User' } } } },
+                            },
+                          },
+                        },
+                      },
+                    },
+                  ],
+                },
+              ],
+            },
+          },
+        }),
+      }),
+    );
+    global.fetch = mockFetch as unknown as typeof fetch;
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getTweet('123');
+
+    expect(result.success).toBe(false);
+    expect(result.error).toBe('Tweet not found in response');
+  });
+
+  it('adds client user id header after ensureClientUserId', async () => {
+    const client = new TwitterClient({ cookies: validCookies });
+    process.env.NODE_ENV = 'production';
+
+    vi.spyOn(client, 'getCurrentUser').mockResolvedValue({
+      success: true,
+      user: { id: '42', username: 'tester', name: 'Tester' },
+    });
+
+    const clientPrivate = client as unknown as TwitterClientPrivate;
+    await clientPrivate.ensureClientUserId();
+    const headers = clientPrivate.getBaseHeaders();
+
+    expect(headers['x-twitter-client-user-id']).toBe('42');
+  });
+
+  describe('fetchUserArticlePlainText failures', () => {
+    it('returns empty object when response is not ok', async () => {
+      const mockFetch = vi.fn().mockResolvedValueOnce(makeResponse({ ok: false, status: 500 }));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientPrivate;
+      const result = await clientPrivate.fetchUserArticlePlainText('user', 'tweet');
+
+      expect(result).toEqual({});
+    });
+
+    it('returns empty object when fetching throws', async () => {
+      const mockFetch = vi.fn().mockRejectedValueOnce(new Error('boom'));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientPrivate;
+      const result = await clientPrivate.fetchUserArticlePlainText('user', 'tweet');
+
+      expect(result).toEqual({});
+    });
+
+    it('returns empty object when no matching tweet is found', async () => {
+      const mockFetch = vi.fn().mockResolvedValueOnce(
+        makeResponse({
+          json: async () => ({
+            data: {
+              user: { result: { timeline: { timeline: { instructions: [] } } } },
+            },
+          }),
+        }),
+      );
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientPrivate;
+      const result = await clientPrivate.fetchUserArticlePlainText('user', 'tweet');
+
+      expect(result).toEqual({});
+    });
+  });
+
+  describe('fetchTweetDetail error handling', () => {
+    it('returns API errors from response payloads', async () => {
+      const mockFetch = vi.fn().mockResolvedValueOnce(
+        makeResponse({
+          json: async () => ({ errors: [{ message: 'bad news' }] }),
+        }),
+      );
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientPrivate;
+      const result = await clientPrivate.fetchTweetDetail('1');
+
+      expect(result.success).toBe(false);
+      expect(result.error).toBe('bad news');
+    });
+
+    it('allows partial errors when tweetResult is present', async () => {
+      const mockFetch = vi.fn().mockResolvedValueOnce(
+        makeResponse({
+          json: async () => ({
+            data: {
+              tweetResult: {
+                result: {
+                  rest_id: '1',
+                  legacy: {
+                    full_text: 'hi',
+                    created_at: '2024-01-01T00:00:00Z',
+                    reply_count: 0,
+                    retweet_count: 0,
+                    favorite_count: 0,
+                  },
+                  core: { user_results: { result: { legacy: { screen_name: 'user', name: 'User' } } } },
+                },
+              },
+            },
+            errors: [{ message: 'field error' }],
+          }),
+        }),
+      );
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientPrivate;
+      const result = await clientPrivate.fetchTweetDetail('1');
+
+      expect(result.success).toBe(true);
+      expect(result.data?.tweetResult).toBeDefined();
+    });
+
+    it('allows partial errors when instructions are present', async () => {
+      const mockFetch = vi.fn().mockResolvedValueOnce(
+        makeResponse({
+          json: async () => ({
+            data: {
+              threaded_conversation_with_injections_v2: {
+                instructions: [
+                  {
+                    entries: [
+                      {
+                        content: {
+                          itemContent: {
+                            tweet_results: {
+                              result: {
+                                rest_id: '2',
+                                legacy: {
+                                  full_text: 'thread tweet',
+                                  created_at: '2024-01-01T00:00:00Z',
+                                  reply_count: 0,
+                                  retweet_count: 0,
+                                  favorite_count: 0,
+                                  conversation_id_str: '2',
+                                },
+                                core: {
+                                  user_results: { result: { legacy: { screen_name: 'user', name: 'User' } } },
+                                },
+                              },
+                            },
+                          },
+                        },
+                      },
+                    ],
+                  },
+                ],
+              },
+            },
+            errors: [{ message: 'is_translatable error' }],
+          }),
+        }),
+      );
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientPrivate;
+      const result = await clientPrivate.fetchTweetDetail('2');
+
+      expect(result.success).toBe(true);
+      expect(result.data?.threaded_conversation_with_injections_v2?.instructions?.length).toBe(1);
+    });
+
+    it('parses POST responses when GET returns 404', async () => {
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(makeResponse({ ok: false, status: 404, text: async () => 'nope' }))
+        .mockResolvedValueOnce(
+          makeResponse({
+            json: async () => ({
+              data: {
+                tweetResult: {
+                  result: {
+                    rest_id: '1',
+                    legacy: {
+                      full_text: 'hi',
+                      created_at: '2024-01-01T00:00:00Z',
+                      reply_count: 0,
+                      retweet_count: 0,
+                      favorite_count: 0,
+                    },
+                    core: { user_results: { result: { legacy: { screen_name: 'user', name: 'User' } } } },
+                  },
+                },
+              },
+            }),
+          }),
+        );
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientPrivate;
+      const result = await clientPrivate.fetchTweetDetail('1');
+
+      expect(result.success).toBe(true);
+    });
+
+    it('returns an error when fetch throws', async () => {
+      const mockFetch = vi.fn().mockRejectedValueOnce(new Error('boom'));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientPrivate;
+      const result = await clientPrivate.fetchTweetDetail('1');
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('boom');
+    });
+  });
+
+  describe('postStatusUpdate error handling', () => {
+    it('returns an error when postStatusUpdate throws', async () => {
+      const mockFetch = vi.fn().mockRejectedValueOnce(new Error('boom'));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientPrivate;
+      const result = await clientPrivate.postStatusUpdate({ text: 'hello' });
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('boom');
+    });
+  });
+});

tests/twitter-client-coverage.news.test.ts

@@ -0,0 +1,397 @@
+import { afterEach, describe, expect, it, vi } from 'vitest';
+import { TwitterClient } from '../src/lib/twitter-client.js';
+
+const validCookies = {
+  authToken: 'test_auth_token',
+  ct0: 'test_ct0_token',
+  cookieHeader: 'auth_token=test_auth_token; ct0=test_ct0_token',
+  source: 'test',
+};
+
+type ResponseLike = {
+  ok: boolean;
+  status: number;
+  json: () => Promise<unknown>;
+  text: () => Promise<string>;
+};
+
+const makeResponse = (overrides: Partial<ResponseLike> = {}): ResponseLike => ({
+  ok: true,
+  status: 200,
+  json: async (): Promise<unknown> => ({}),
+  text: async (): Promise<string> => '',
+  ...overrides,
+});
+
+// Helper to create GenericTimelineById response structure
+const makeTimelineResponse = (items: unknown[]) => ({
+  data: {
+    timeline: {
+      timeline: {
+        instructions: [
+          {
+            type: 'TimelineAddEntries',
+            entries: items.map((item, index) => ({
+              entryId: `test-entry-${index}`,
+              content: {
+                items: [
+                  {
+                    item: {
+                      itemContent: item,
+                    },
+                  },
+                ],
+              },
+            })),
+          },
+        ],
+      },
+    },
+  },
+});
+
+const makeTimelineResponseWithInstruction = (type: string, entries: unknown[]) => ({
+  data: {
+    timeline: {
+      timeline: {
+        instructions: [
+          {
+            type,
+            entries,
+          },
+        ],
+      },
+    },
+  },
+});
+
+describe('TwitterClient news API coverage', () => {
+  const originalFetch = global.fetch;
+
+  afterEach(() => {
+    global.fetch = originalFetch;
+    vi.restoreAllMocks();
+  });
+
+  describe('getNews', () => {
+    it('returns news items from timeline tabs', async () => {
+      // Mock multiple tab requests (forYou, news, sports, entertainment)
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(
+          makeResponse({
+            json: async () =>
+              makeTimelineResponse([
+                {
+                  is_ai_trend: true,
+                  name: 'AI Breakthrough in Machine Learning',
+                  social_context: {
+                    text: 'AI · 2h ago · 15.5K posts',
+                  },
+                  trend_url: {
+                    url: 'https://x.com/hashtag/AI',
+                  },
+                },
+              ]),
+          }),
+        )
+        .mockResolvedValue(makeResponse({ json: async () => makeTimelineResponse([]) }));
+
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.getNews(1);
+
+      expect(result.success).toBe(true);
+      expect(result.items).toBeDefined();
+      expect(result.items?.length).toBe(1);
+      expect(result.items?.[0].headline).toBe('AI Breakthrough in Machine Learning');
+      expect(result.items?.[0].category).toBe('AI · AI');
+      expect(result.items?.[0].timeAgo).toBe('2h ago');
+      expect(result.items?.[0].postCount).toBe(15500);
+      expect(result.items?.[0].url).toBe('https://x.com/hashtag/AI');
+    });
+
+    it('includes raw item content when includeRaw is true', async () => {
+      const itemContent = {
+        is_ai_trend: true,
+        name: 'AI News',
+        social_context: { text: 'AI · 1h ago · 1.2K posts' },
+      };
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(makeResponse({ json: async () => makeTimelineResponse([itemContent]) }))
+        .mockResolvedValue(makeResponse({ json: async () => makeTimelineResponse([]) }));
+
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.getNews(1, { includeRaw: true });
+
+      expect(result.success).toBe(true);
+      expect(result.items?.[0]._raw).toEqual(itemContent);
+    });
+
+    it('filters to AI-only items when aiOnly is true', async () => {
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(
+          makeResponse({
+            json: async () =>
+              makeTimelineResponse([
+                {
+                  is_ai_trend: true,
+                  name: 'AI News',
+                },
+                {
+                  is_ai_trend: false,
+                  name: 'Regular News',
+                },
+              ]),
+          }),
+        )
+        .mockResolvedValue(makeResponse({ json: async () => makeTimelineResponse([]) }));
+
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.getNews(10, { aiOnly: true });
+
+      expect(result.success).toBe(true);
+      expect(result.items?.length).toBe(1);
+      expect(result.items?.[0].headline).toBe('AI News');
+    });
+
+    it('fetches only selected tabs', async () => {
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(
+          makeResponse({
+            json: async () =>
+              makeTimelineResponse([
+                {
+                  is_ai_trend: true,
+                  name: 'News 1',
+                },
+              ]),
+          }),
+        )
+        .mockResolvedValue(makeResponse({ json: async () => makeTimelineResponse([]) }));
+
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.getNews(1, { tabs: ['news'] });
+
+      expect(result.success).toBe(true);
+      expect(mockFetch).toHaveBeenCalledTimes(1);
+    });
+
+    it('returns error for non-ok responses', async () => {
+      // Mock all 4 default tabs (forYou, news, sports, entertainment) to return HTTP 500
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValue(makeResponse({ ok: false, status: 500, text: async () => 'Server error' }));
+
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.getNews(10);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('No news items found');
+    });
+
+    it('returns error when API returns errors', async () => {
+      // Mock all 4 default tabs to return API errors
+      const mockFetch = vi.fn().mockResolvedValue(
+        makeResponse({
+          json: async () => ({
+            errors: [{ message: 'Rate limited' }, { message: 'Too many requests' }],
+          }),
+        }),
+      );
+
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.getNews(10);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('No news items found');
+    });
+
+    it('returns error when no news items found', async () => {
+      const mockFetch = vi.fn().mockResolvedValue(makeResponse({ json: async () => makeTimelineResponse([]) }));
+
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.getNews(10);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('No news items found');
+    });
+
+    it('deduplicates headlines across tabs', async () => {
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(
+          makeResponse({
+            json: async () =>
+              makeTimelineResponse([
+                {
+                  is_ai_trend: true,
+                  name: 'Duplicate Headline',
+                },
+              ]),
+          }),
+        )
+        .mockResolvedValueOnce(
+          makeResponse({
+            json: async () =>
+              makeTimelineResponse([
+                {
+                  is_ai_trend: true,
+                  name: 'Duplicate Headline',
+                },
+              ]),
+          }),
+        )
+        .mockResolvedValue(makeResponse({ json: async () => makeTimelineResponse([]) }));
+
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.getNews(10);
+
+      expect(result.success).toBe(true);
+      expect(result.items?.length).toBe(1);
+      expect(result.items?.[0].headline).toBe('Duplicate Headline');
+    });
+
+    it('respects count parameter', async () => {
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(
+          makeResponse({
+            json: async () =>
+              makeTimelineResponse([
+                {
+                  is_ai_trend: true,
+                  name: 'News 1',
+                },
+                {
+                  is_ai_trend: true,
+                  name: 'News 2',
+                },
+                {
+                  is_ai_trend: true,
+                  name: 'News 3',
+                },
+              ]),
+          }),
+        )
+        .mockResolvedValue(makeResponse({ json: async () => makeTimelineResponse([]) }));
+
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.getNews(2);
+
+      expect(result.success).toBe(true);
+      expect(result.items?.length).toBe(2);
+    });
+
+    it('parses entries from non-TimelineAddEntries instructions', async () => {
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(
+          makeResponse({
+            json: async () =>
+              makeTimelineResponseWithInstruction('TimelineReplaceEntry', [
+                {
+                  entryId: 'replace-entry-1',
+                  content: {
+                    itemContent: {
+                      is_ai_trend: true,
+                      name: 'Replacement headline',
+                    },
+                  },
+                },
+              ]),
+          }),
+        )
+        .mockResolvedValue(makeResponse({ json: async () => makeTimelineResponse([]) }));
+
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.getNews(1);
+
+      expect(result.success).toBe(true);
+      expect(result.items?.[0].headline).toBe('Replacement headline');
+    });
+
+    it('assigns unique ids for module entries', async () => {
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(
+          makeResponse({
+            json: async () =>
+              makeTimelineResponseWithInstruction('TimelineAddEntries', [
+                {
+                  entryId: 'module-entry',
+                  content: {
+                    items: [
+                      {
+                        item: { itemContent: { is_ai_trend: true, name: 'Headline A' } },
+                      },
+                      {
+                        item: { itemContent: { is_ai_trend: true, name: 'Headline B' } },
+                      },
+                    ],
+                  },
+                },
+              ]),
+          }),
+        )
+        .mockResolvedValue(makeResponse({ json: async () => makeTimelineResponse([]) }));
+
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.getNews(2);
+
+      expect(result.success).toBe(true);
+      const ids = result.items?.map((item) => item.id) ?? [];
+      expect(new Set(ids).size).toBe(ids.length);
+    });
+
+    it('uses trend urls as ids when available', async () => {
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(
+          makeResponse({
+            json: async () =>
+              makeTimelineResponse([
+                {
+                  is_ai_trend: true,
+                  name: 'Headline A',
+                  trend_url: { url: 'https://x.com/hashtag/A' },
+                },
+              ]),
+          }),
+        )
+        .mockResolvedValue(makeResponse({ json: async () => makeTimelineResponse([]) }));
+
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.getNews(1);
+
+      expect(result.success).toBe(true);
+      expect(result.items?.[0].id).toBe('https://x.com/hashtag/A');
+    });
+  });
+});

tests/twitter-client-coverage.upload.test.ts

@@ -0,0 +1,220 @@
+import { afterEach, describe, expect, it, vi } from 'vitest';
+import { TwitterClient } from '../src/lib/twitter-client.js';
+import { extractArticleText } from '../src/lib/twitter-client-utils.js';
+
+const validCookies = {
+  authToken: 'test_auth_token',
+  ct0: 'test_ct0_token',
+  cookieHeader: 'auth_token=test_auth_token; ct0=test_ct0_token',
+  source: 'test',
+};
+
+type ResponseLike = {
+  ok: boolean;
+  status: number;
+  json: () => Promise<unknown>;
+  text: () => Promise<string>;
+};
+
+type TwitterClientUploadPrivate = TwitterClient & {
+  sleep: (ms: number) => Promise<void>;
+};
+
+const makeResponse = (overrides: Partial<ResponseLike> = {}): ResponseLike => ({
+  ok: true,
+  status: 200,
+  json: async (): Promise<unknown> => ({}),
+  text: async (): Promise<string> => '',
+  ...overrides,
+});
+
+describe('TwitterClient upload coverage', () => {
+  const originalFetch = global.fetch;
+
+  afterEach(() => {
+    global.fetch = originalFetch;
+    delete process.env.BIRD_DEBUG_ARTICLE;
+    vi.restoreAllMocks();
+  });
+
+  describe('uploadMedia error paths', () => {
+    it('rejects unsupported media types', async () => {
+      global.fetch = vi.fn() as unknown as typeof fetch;
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.uploadMedia({ data: new Uint8Array([1, 2, 3]), mimeType: 'application/pdf' });
+
+      expect(result.success).toBe(false);
+      expect(global.fetch).not.toHaveBeenCalled();
+    });
+
+    it('returns an error when INIT fails', async () => {
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(makeResponse({ ok: false, status: 500, text: async () => 'nope' }));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.uploadMedia({ data: new Uint8Array([1]), mimeType: 'image/png' });
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('HTTP 500');
+    });
+
+    it('returns an error when APPEND fails', async () => {
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(makeResponse({ json: async () => ({ media_id_string: '1' }) }))
+        .mockResolvedValueOnce(makeResponse({ ok: false, status: 500, text: async () => 'nope' }));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.uploadMedia({ data: new Uint8Array([1]), mimeType: 'image/png' });
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('HTTP 500');
+    });
+
+    it('returns an error when FINALIZE fails', async () => {
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(makeResponse({ json: async () => ({ media_id_string: '1' }) }))
+        .mockResolvedValueOnce(makeResponse())
+        .mockResolvedValueOnce(makeResponse({ ok: false, status: 500, text: async () => 'nope' }));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.uploadMedia({ data: new Uint8Array([1]), mimeType: 'image/png' });
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('HTTP 500');
+    });
+
+    it('returns an error when media processing fails', async () => {
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(makeResponse({ json: async () => ({ media_id_string: '1' }) }))
+        .mockResolvedValueOnce(makeResponse())
+        .mockResolvedValueOnce(
+          makeResponse({
+            json: async () => ({ processing_info: { state: 'failed', error: { message: 'processing failed' } } }),
+          }),
+        );
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.uploadMedia({ data: new Uint8Array([1]), mimeType: 'video/mp4' });
+
+      expect(result.success).toBe(false);
+      expect(result.error).toBe('processing failed');
+    });
+
+    it('returns an error when STATUS fails', async () => {
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(makeResponse({ json: async () => ({ media_id_string: '1' }) }))
+        .mockResolvedValueOnce(makeResponse())
+        .mockResolvedValueOnce(
+          makeResponse({
+            json: async () => ({ processing_info: { state: 'pending', check_after_secs: 0 } }),
+          }),
+        )
+        .mockResolvedValueOnce(makeResponse({ ok: false, status: 503, text: async () => 'down' }));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientUploadPrivate;
+      clientPrivate.sleep = vi.fn().mockResolvedValue(undefined);
+
+      const result = await client.uploadMedia({ data: new Uint8Array([1]), mimeType: 'video/mp4' });
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('HTTP 503');
+    });
+
+    it('retries STATUS and continues when processing is pending', async () => {
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(makeResponse({ json: async () => ({ media_id_string: '1' }) }))
+        .mockResolvedValueOnce(makeResponse())
+        .mockResolvedValueOnce(
+          makeResponse({
+            json: async () => ({ processing_info: { state: 'pending', check_after_secs: 0 } }),
+          }),
+        )
+        .mockResolvedValueOnce(
+          makeResponse({
+            json: async () => ({ processing_info: { state: 'pending', check_after_secs: 0 } }),
+          }),
+        )
+        .mockResolvedValueOnce(makeResponse({ json: async () => ({ processing_info: { state: 'succeeded' } }) }));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientUploadPrivate;
+      clientPrivate.sleep = vi.fn().mockResolvedValue(undefined);
+
+      const result = await client.uploadMedia({ data: new Uint8Array([1]), mimeType: 'video/mp4' });
+
+      expect(result.success).toBe(true);
+    });
+
+    it('returns an error when metadata upload fails', async () => {
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(makeResponse({ json: async () => ({ media_id_string: '1' }) }))
+        .mockResolvedValueOnce(makeResponse())
+        .mockResolvedValueOnce(makeResponse({ json: async () => ({}) }))
+        .mockResolvedValueOnce(makeResponse({ ok: false, status: 400, text: async () => 'bad' }));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.uploadMedia({ data: new Uint8Array([1]), mimeType: 'image/png', alt: 'alt' });
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('HTTP 400');
+    });
+
+    it('returns an error when upload throws', async () => {
+      const mockFetch = vi.fn().mockRejectedValueOnce(new Error('boom'));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.uploadMedia({ data: new Uint8Array([1]), mimeType: 'image/png' });
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('boom');
+    });
+  });
+
+  describe('article extraction edge cases', () => {
+    it('logs article payloads when debug flag is set', () => {
+      process.env.BIRD_DEBUG_ARTICLE = '1';
+      const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => {});
+
+      const result = extractArticleText({
+        rest_id: '1',
+        article: {
+          title: 'Title',
+          plain_text: 'Body',
+          article_results: { result: { title: 'Title', plain_text: 'Body' } },
+        },
+      });
+
+      expect(result).toBe('Title\n\nBody');
+      expect(errorSpy).toHaveBeenCalled();
+    });
+
+    it('drops duplicate body when it matches the title', () => {
+      const result = extractArticleText({
+        rest_id: '1',
+        article: {
+          title: 'Same',
+          plain_text: 'Same',
+          article_results: { result: { title: 'Same', plain_text: 'Same' } },
+        },
+      });
+
+      expect(result).toBe('Same');
+    });
+  });
+});

tests/twitter-client-fixtures.ts

@@ -0,0 +1,21 @@
+import type { TwitterClient } from '../src/lib/twitter-client.js';
+
+export const validCookies = {
+  authToken: 'test_auth_token',
+  ct0: 'test_ct0_token',
+  cookieHeader: 'auth_token=test_auth_token; ct0=test_ct0_token',
+  source: 'test',
+};
+
+export type TwitterClientPrivate = TwitterClient & {
+  getCurrentUser: () => Promise<{
+    success: boolean;
+    user?: { id: string; username: string; name: string };
+    error?: string;
+  }>;
+  getLikesQueryIds: () => Promise<string[]>;
+  getListTimelineQueryIds: () => Promise<string[]>;
+  getListOwnershipsQueryIds: () => Promise<string[]>;
+  getListMembershipsQueryIds: () => Promise<string[]>;
+  refreshQueryIds: () => Promise<void>;
+};

tests/twitter-client.constructor-tweet-reply.test.ts

@@ -0,0 +1,400 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import { TwitterClient } from '../src/lib/twitter-client.js';
+import { validCookies } from './twitter-client-fixtures.js';
+
+const originalFetch = global.fetch;
+
+afterEach(() => {
+  global.fetch = originalFetch;
+  vi.restoreAllMocks();
+});
+
+describe('TwitterClient constructor', () => {
+  it('should throw if authToken is missing', () => {
+    expect(
+      () =>
+        new TwitterClient({
+          cookies: { authToken: null, ct0: 'test', cookieHeader: null, source: null },
+        }),
+    ).toThrow('Both authToken and ct0 cookies are required');
+  });
+
+  it('should throw if ct0 is missing', () => {
+    expect(
+      () =>
+        new TwitterClient({
+          cookies: { authToken: 'test', ct0: null, cookieHeader: null, source: null },
+        }),
+    ).toThrow('Both authToken and ct0 cookies are required');
+  });
+
+  it('should create client with valid cookies', () => {
+    const client = new TwitterClient({ cookies: validCookies });
+    expect(client).toBeInstanceOf(TwitterClient);
+  });
+});
+
+describe('TwitterClient tweet', () => {
+  let mockFetch: ReturnType<typeof vi.fn>;
+
+  beforeEach(() => {
+    mockFetch = vi.fn();
+    global.fetch = mockFetch;
+  });
+
+  it('should post a tweet successfully', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      json: async () => ({
+        data: {
+          create_tweet: {
+            tweet_results: {
+              result: {
+                rest_id: '1234567890',
+                legacy: {
+                  full_text: 'Hello world!',
+                },
+              },
+            },
+          },
+        },
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.tweet('Hello world!');
+
+    expect(result.success).toBe(true);
+    expect(result.tweetId).toBe('1234567890');
+    expect(mockFetch).toHaveBeenCalledTimes(1);
+
+    const [url, options] = mockFetch.mock.calls[0];
+    expect(url).toContain('CreateTweet');
+    expect(options.method).toBe('POST');
+
+    const body = JSON.parse(options.body);
+    expect(body.variables.tweet_text).toBe('Hello world!');
+    expect(body.features.rweb_video_screen_enabled).toBe(true);
+    expect(body.features.creator_subscriptions_tweet_preview_api_enabled).toBe(true);
+  });
+
+  it('supports attaching media IDs', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      json: async () => ({
+        data: {
+          create_tweet: {
+            tweet_results: {
+              result: {
+                rest_id: '1234567890',
+              },
+            },
+          },
+        },
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.tweet('Hello world!', ['111', '222']);
+
+    expect(result.success).toBe(true);
+    expect(mockFetch).toHaveBeenCalledTimes(1);
+
+    const [, options] = mockFetch.mock.calls[0];
+    const body = JSON.parse(options.body);
+    expect(body.variables.media.media_entities).toEqual([
+      { media_id: '111', tagged_users: [] },
+      { media_id: '222', tagged_users: [] },
+    ]);
+  });
+
+  it('retries CreateTweet via /i/api/graphql when operation URL 404s', async () => {
+    mockFetch
+      .mockResolvedValueOnce({
+        ok: false,
+        status: 404,
+        text: async () => '',
+      })
+      .mockResolvedValueOnce({
+        ok: false,
+        status: 404,
+        text: async () => '',
+      })
+      .mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => ({
+          data: {
+            create_tweet: {
+              tweet_results: {
+                result: {
+                  rest_id: '1234567890',
+                },
+              },
+            },
+          },
+        }),
+      });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.tweet('Hello world!');
+
+    expect(result.success).toBe(true);
+    expect(result.tweetId).toBe('1234567890');
+    expect(mockFetch).toHaveBeenCalledTimes(3);
+
+    const [firstUrl] = mockFetch.mock.calls[0];
+    const [thirdUrl] = mockFetch.mock.calls[2];
+    expect(String(firstUrl)).toContain('/CreateTweet');
+    expect(String(thirdUrl)).toBe('https://x.com/i/api/graphql');
+  });
+
+  it('should handle API errors', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      json: async () => ({
+        errors: [{ message: 'Rate limit exceeded', code: 88 }],
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.tweet('Test');
+
+    expect(result.success).toBe(false);
+    expect(result.error).toContain('Rate limit exceeded');
+  });
+
+  it('falls back to statuses/update.json when CreateTweet returns code 226', async () => {
+    mockFetch
+      .mockResolvedValueOnce({
+        ok: true,
+        json: async () => ({
+          errors: [
+            {
+              message: 'Authorization: This request looks like it might be automated.',
+              code: 226,
+            },
+          ],
+        }),
+      })
+      .mockResolvedValueOnce({
+        ok: true,
+        json: async () => ({
+          id_str: '1234567890',
+        }),
+      });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.tweet('Hello world!');
+
+    expect(result.success).toBe(true);
+    expect(result.tweetId).toBe('1234567890');
+    expect(mockFetch).toHaveBeenCalledTimes(2);
+    expect(String(mockFetch.mock.calls[1][0])).toContain('statuses/update.json');
+  });
+
+  it('surfaces statuses/update.json failure when CreateTweet returns code 226', async () => {
+    mockFetch
+      .mockResolvedValueOnce({
+        ok: true,
+        json: async () => ({
+          errors: [
+            {
+              message: 'Authorization: This request looks like it might be automated.',
+              code: 226,
+            },
+          ],
+        }),
+      })
+      .mockResolvedValueOnce({
+        ok: false,
+        status: 403,
+        text: async () => 'Forbidden',
+      });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.tweet('Hello world!');
+
+    expect(result.success).toBe(false);
+    expect(result.error).toContain('(226)');
+    expect(result.error).toContain('fallback: HTTP 403');
+    expect(mockFetch).toHaveBeenCalledTimes(2);
+    expect(String(mockFetch.mock.calls[1][0])).toContain('statuses/update.json');
+  });
+
+  it('surfaces statuses/update.json API errors when CreateTweet returns code 226', async () => {
+    mockFetch
+      .mockResolvedValueOnce({
+        ok: true,
+        json: async () => ({
+          errors: [
+            {
+              message: 'Authorization: This request looks like it might be automated.',
+              code: 226,
+            },
+          ],
+        }),
+      })
+      .mockResolvedValueOnce({
+        ok: true,
+        json: async () => ({
+          errors: [{ message: 'Nope', code: 999 }],
+        }),
+      });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.tweet('Hello world!');
+
+    expect(result.success).toBe(false);
+    expect(result.error).toContain('(226)');
+    expect(result.error).toContain('fallback: Nope (999)');
+  });
+
+  it('surfaces statuses/update.json missing id when CreateTweet returns code 226', async () => {
+    mockFetch
+      .mockResolvedValueOnce({
+        ok: true,
+        json: async () => ({
+          errors: [
+            {
+              message: 'Authorization: This request looks like it might be automated.',
+              code: 226,
+            },
+          ],
+        }),
+      })
+      .mockResolvedValueOnce({
+        ok: true,
+        json: async () => ({}),
+      });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.tweet('Hello world!');
+
+    expect(result.success).toBe(false);
+    expect(result.error).toContain('(226)');
+    expect(result.error).toContain('fallback: Tweet created but no ID returned');
+  });
+
+  it('should handle HTTP errors', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: false,
+      status: 403,
+      text: async () => 'Forbidden',
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.tweet('Test');
+
+    expect(result.success).toBe(false);
+    expect(result.error).toContain('HTTP 403');
+  });
+
+  it('should handle network errors', async () => {
+    mockFetch.mockRejectedValueOnce(new Error('Network error'));
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.tweet('Test');
+
+    expect(result.success).toBe(false);
+    expect(result.error).toBe('Network error');
+  });
+
+  it('should surface missing tweet ID when API responds without rest_id', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      json: async () => ({
+        data: {
+          create_tweet: {
+            tweet_results: {
+              result: {
+                legacy: { full_text: 'No id' },
+              },
+            },
+          },
+        },
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.tweet('Hello world!');
+
+    expect(result.success).toBe(false);
+    expect(result.error).toBe('Tweet created but no ID returned');
+  });
+});
+
+describe('TwitterClient reply', () => {
+  let mockFetch: ReturnType<typeof vi.fn>;
+
+  beforeEach(() => {
+    mockFetch = vi.fn();
+    global.fetch = mockFetch;
+  });
+
+  it('should post a reply with correct reply_to_tweet_id', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      json: async () => ({
+        data: {
+          create_tweet: {
+            tweet_results: {
+              result: {
+                rest_id: '9876543210',
+              },
+            },
+          },
+        },
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.reply('This is a reply', '1234567890');
+
+    expect(result.success).toBe(true);
+    expect(result.tweetId).toBe('9876543210');
+
+    const [, options] = mockFetch.mock.calls[0];
+    const body = JSON.parse(options.body);
+    expect(body.variables.reply.in_reply_to_tweet_id).toBe('1234567890');
+    expect(body.variables.tweet_text).toBe('This is a reply');
+    expect(body.features.rweb_video_screen_enabled).toBe(true);
+    expect(body.features.creator_subscriptions_tweet_preview_api_enabled).toBe(true);
+  });
+
+  it('falls back to statuses/update.json for replies when CreateTweet returns code 226', async () => {
+    mockFetch
+      .mockResolvedValueOnce({
+        ok: true,
+        json: async () => ({
+          errors: [
+            {
+              message: 'Authorization: This request looks like it might be automated.',
+              code: 226,
+            },
+          ],
+        }),
+      })
+      .mockResolvedValueOnce({
+        ok: true,
+        json: async () => ({
+          id_str: '999',
+        }),
+      });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.reply('This is a reply', '1234567890', ['111', '222']);
+
+    expect(result.success).toBe(true);
+    expect(result.tweetId).toBe('999');
+    expect(mockFetch).toHaveBeenCalledTimes(2);
+
+    const [, options] = mockFetch.mock.calls[1];
+    expect(String(mockFetch.mock.calls[1][0])).toContain('statuses/update.json');
+    expect(options.method).toBe('POST');
+    expect(options.body).toContain('status=This+is+a+reply');
+    expect(options.body).toContain('in_reply_to_status_id=1234567890');
+    expect(options.body).toContain('auto_populate_reply_metadata=true');
+    expect(options.body).toContain('media_ids=111%2C222');
+  });
+});

tests/twitter-client.conversations.test.ts

@@ -0,0 +1,170 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import { TwitterClient } from '../src/lib/twitter-client.js';
+import { validCookies } from './twitter-client-fixtures.js';
+
+const originalFetch = global.fetch;
+
+afterEach(() => {
+  global.fetch = originalFetch;
+  vi.restoreAllMocks();
+});
+
+describe('TwitterClient conversation helpers', () => {
+  let mockFetch: ReturnType<typeof vi.fn>;
+
+  beforeEach(() => {
+    mockFetch = vi.fn();
+    global.fetch = mockFetch as unknown as typeof fetch;
+  });
+
+  const makeConversationPayload = () => ({
+    data: {
+      threaded_conversation_with_injections_v2: {
+        instructions: [
+          {
+            entries: [
+              {
+                content: {
+                  itemContent: {
+                    tweet_results: {
+                      result: {
+                        rest_id: '1',
+                        legacy: {
+                          full_text: 'root',
+                          created_at: '2024-01-01T00:00:00Z',
+                          reply_count: 0,
+                          retweet_count: 0,
+                          favorite_count: 0,
+                          conversation_id_str: '1',
+                        },
+                        core: { user_results: { result: { legacy: { screen_name: 'root', name: 'Root' } } } },
+                      },
+                    },
+                  },
+                },
+              },
+              {
+                content: {
+                  itemContent: {
+                    tweet_results: {
+                      result: {
+                        rest_id: '2',
+                        legacy: {
+                          full_text: 'child reply',
+                          created_at: '2024-01-02T00:00:00Z',
+                          reply_count: 0,
+                          retweet_count: 0,
+                          favorite_count: 0,
+                          conversation_id_str: '1',
+                          in_reply_to_status_id_str: '1',
+                        },
+                        core: { user_results: { result: { legacy: { screen_name: 'child', name: 'Child' } } } },
+                      },
+                    },
+                  },
+                },
+              },
+            ],
+          },
+        ],
+      },
+    },
+  });
+
+  it('getReplies returns only replies to tweet', async () => {
+    mockFetch.mockResolvedValue({
+      ok: true,
+      status: 200,
+      json: async () => makeConversationPayload(),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getReplies('1');
+
+    expect(result.success).toBe(true);
+    expect(result.tweets?.length).toBe(1);
+    expect(result.tweets?.[0].id).toBe('2');
+  });
+
+  it('getThread returns sorted thread by createdAt', async () => {
+    const payload = makeConversationPayload();
+    // swap dates to verify sorting
+    const legacy =
+      payload.data.threaded_conversation_with_injections_v2.instructions[0]?.entries?.[0]?.content?.itemContent
+        ?.tweet_results?.result?.legacy;
+    if (legacy) {
+      legacy.created_at = '2024-01-03T00:00:00Z';
+    }
+
+    mockFetch.mockResolvedValue({
+      ok: true,
+      status: 200,
+      json: async () => payload,
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getThread('2');
+
+    expect(result.success).toBe(true);
+    expect(result.tweets?.map((t) => t.id)).toEqual(['2', '1']); // sorted by createdAt asc
+  });
+
+  it('getThread includes tweets from timeline module items', async () => {
+    const payload = makeConversationPayload();
+    payload.data.threaded_conversation_with_injections_v2.instructions[0]?.entries?.push({
+      content: {
+        items: [
+          {
+            item: {
+              itemContent: {
+                tweet_results: {
+                  result: {
+                    rest_id: '3',
+                    legacy: {
+                      full_text: 'nested reply',
+                      created_at: '2024-01-04T00:00:00Z',
+                      reply_count: 0,
+                      retweet_count: 0,
+                      favorite_count: 0,
+                      conversation_id_str: '1',
+                      in_reply_to_status_id_str: '1',
+                    },
+                    core: {
+                      user_results: { result: { legacy: { screen_name: 'nested', name: 'Nested' } } },
+                    },
+                  },
+                },
+              },
+            },
+          },
+        ],
+      },
+    });
+
+    mockFetch.mockResolvedValue({
+      ok: true,
+      status: 200,
+      json: async () => payload,
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getThread('1');
+
+    expect(result.success).toBe(true);
+    expect(result.tweets?.map((t) => t.id)).toEqual(['1', '2', '3']);
+  });
+
+  it('propagates fetchTweetDetail errors', async () => {
+    mockFetch.mockResolvedValue({
+      ok: false,
+      status: 500,
+      text: async () => 'oops',
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getThread('1');
+
+    expect(result.success).toBe(false);
+    expect(result.error).toContain('HTTP 500');
+  });
+});

tests/twitter-client.current-user.test.ts

@@ -0,0 +1,136 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import { TwitterClient } from '../src/lib/twitter-client.js';
+import { validCookies } from './twitter-client-fixtures.js';
+
+const originalFetch = global.fetch;
+
+afterEach(() => {
+  global.fetch = originalFetch;
+  vi.restoreAllMocks();
+});
+
+describe('TwitterClient getCurrentUser', () => {
+  let mockFetch: ReturnType<typeof vi.fn>;
+
+  beforeEach(() => {
+    mockFetch = vi.fn();
+    global.fetch = mockFetch as unknown as typeof fetch;
+  });
+
+  it('returns mapped user details when present', async () => {
+    mockFetch.mockResolvedValue({
+      ok: true,
+      status: 200,
+      json: async () => ({
+        user_id: '12345',
+        screen_name: 'tester',
+        name: 'Test User',
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getCurrentUser();
+
+    expect(result.success).toBe(true);
+    expect(result.user).toEqual({ id: '12345', username: 'tester', name: 'Test User' });
+    expect(mockFetch).toHaveBeenCalledWith(expect.stringContaining('account/settings'), expect.any(Object));
+  });
+
+  it('returns error when response lacks identifiers', async () => {
+    mockFetch.mockImplementation(async () => ({
+      ok: true,
+      status: 200,
+      json: async () => ({ language: 'en' }),
+      text: async () => '{"language":"en"}',
+    }));
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getCurrentUser();
+
+    expect(result.success).toBe(false);
+    expect(result.error).toContain('Could not');
+  });
+
+  it('surfaces HTTP errors', async () => {
+    mockFetch.mockImplementation(async () => ({
+      ok: false,
+      status: 401,
+      text: async () => 'Unauthorized',
+    }));
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getCurrentUser();
+
+    expect(result.success).toBe(false);
+    expect(result.error).toContain('HTTP 401');
+  });
+
+  it('uses HTML fallback when API endpoints 404', async () => {
+    mockFetch
+      .mockResolvedValueOnce({ ok: false, status: 404, text: async () => 'not found' })
+      .mockResolvedValueOnce({ ok: false, status: 404, text: async () => 'not found' })
+      .mockResolvedValueOnce({ ok: false, status: 404, text: async () => 'not found' })
+      .mockResolvedValueOnce({ ok: false, status: 404, text: async () => 'not found' })
+      .mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        text: async () => '<html>"screen_name":"fallback","user_id":"999"</html>',
+      });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getCurrentUser();
+
+    expect(result.success).toBe(true);
+    expect(result.user?.username).toBe('fallback');
+    expect(result.user?.id).toBe('999');
+    expect(mockFetch).toHaveBeenCalledTimes(5);
+  });
+
+  it('skips an endpoint when JSON parsing fails', async () => {
+    mockFetch
+      .mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => {
+          throw new Error('bad json');
+        },
+      })
+      .mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => ({
+          user_id: '12345',
+          screen_name: 'tester',
+          name: 'Test User',
+        }),
+      });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getCurrentUser();
+
+    expect(result.success).toBe(true);
+    expect(result.user).toEqual({ id: '12345', username: 'tester', name: 'Test User' });
+    expect(mockFetch).toHaveBeenCalledTimes(2);
+  });
+
+  it('continues on fetch errors and still succeeds via HTML fallback', async () => {
+    mockFetch
+      .mockRejectedValueOnce(new Error('boom'))
+      .mockResolvedValueOnce({ ok: false, status: 404, text: async () => 'not found' })
+      .mockResolvedValueOnce({ ok: false, status: 404, text: async () => 'not found' })
+      .mockResolvedValueOnce({ ok: false, status: 404, text: async () => 'not found' })
+      .mockRejectedValueOnce(new Error('settings boom'))
+      .mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        text: async () => '<html>"screen_name":"fallback","user_id":"999"</html>',
+      });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getCurrentUser();
+
+    expect(result.success).toBe(true);
+    expect(result.user?.username).toBe('fallback');
+    expect(result.user?.id).toBe('999');
+  });
+});

tests/twitter-client.following-pagination.test.ts

@@ -0,0 +1,180 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import { TwitterClient } from '../src/lib/twitter-client.js';
+import type { TwitterClientPrivate } from './twitter-client-fixtures.js';
+import { validCookies } from './twitter-client-fixtures.js';
+
+const originalFetch = global.fetch;
+
+const makeUserEntry = (id: string, username: string, name: string) => ({
+  content: {
+    itemContent: {
+      user_results: {
+        result: {
+          __typename: 'User',
+          rest_id: id,
+          legacy: {
+            screen_name: username,
+            name,
+            followers_count: 10,
+            friends_count: 5,
+            profile_image_url_https: 'https://img/test_normal.jpg',
+          },
+          is_blue_verified: false,
+          core: {
+            screen_name: username,
+            name,
+          },
+        },
+      },
+    },
+  },
+});
+
+describe('TwitterClient following pagination', () => {
+  let mockFetch: ReturnType<typeof vi.fn>;
+
+  beforeEach(() => {
+    mockFetch = vi.fn();
+    global.fetch = mockFetch as unknown as typeof fetch;
+  });
+
+  afterEach(() => {
+    global.fetch = originalFetch;
+    vi.restoreAllMocks();
+  });
+
+  it('returns nextCursor from the response', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      status: 200,
+      json: async () => ({
+        data: {
+          user: {
+            result: {
+              timeline: {
+                timeline: {
+                  instructions: [
+                    {
+                      entries: [
+                        makeUserEntry('1', 'alice', 'Alice'),
+                        { content: { cursorType: 'Bottom', value: 'cursor-2' } },
+                      ],
+                    },
+                  ],
+                },
+              },
+            },
+          },
+        },
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const clientPrivate = client as unknown as TwitterClientPrivate;
+    clientPrivate.getFollowingQueryIds = async () => ['q1'];
+    clientPrivate.getFollowingViaRest = vi.fn();
+
+    const result = await client.getFollowing('user-id', 3);
+
+    expect(result.success).toBe(true);
+    expect(result.users).toHaveLength(1);
+    expect(result.users?.[0].username).toBe('alice');
+    expect(result.nextCursor).toBe('cursor-2');
+    expect(mockFetch).toHaveBeenCalledTimes(1);
+  });
+
+  it('passes cursor parameter to following API and returns nextCursor', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      status: 200,
+      json: async () => ({
+        data: {
+          user: {
+            result: {
+              timeline: {
+                timeline: {
+                  instructions: [
+                    {
+                      entries: [
+                        makeUserEntry('1', 'alice', 'Alice'),
+                        { content: { cursorType: 'Bottom', value: 'cursor-2' } },
+                      ],
+                    },
+                  ],
+                },
+              },
+            },
+          },
+        },
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const clientPrivate = client as unknown as TwitterClientPrivate;
+    clientPrivate.getFollowingQueryIds = async () => ['q1'];
+    clientPrivate.getFollowingViaRest = vi.fn();
+
+    const result = await client.getFollowing('user-id', 20, 'prev-cursor-xyz');
+
+    expect(result.success).toBe(true);
+    expect(result.nextCursor).toBe('cursor-2');
+
+    const [url] = mockFetch.mock.calls[0];
+    const parsedVars = JSON.parse(new URL(url as string).searchParams.get('variables') as string);
+    expect(parsedVars.cursor).toBe('prev-cursor-xyz');
+  });
+
+  it('returns undefined nextCursor when no cursor in response', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      status: 200,
+      json: async () => ({
+        data: {
+          user: {
+            result: {
+              timeline: {
+                timeline: {
+                  instructions: [
+                    {
+                      entries: [makeUserEntry('1', 'alice', 'Alice')],
+                    },
+                  ],
+                },
+              },
+            },
+          },
+        },
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const clientPrivate = client as unknown as TwitterClientPrivate;
+    clientPrivate.getFollowingQueryIds = async () => ['q1'];
+    clientPrivate.getFollowingViaRest = vi.fn();
+
+    const result = await client.getFollowing('user-id', 20);
+
+    expect(result.success).toBe(true);
+    expect(result.nextCursor).toBeUndefined();
+  });
+
+  it('returns an error for non-ok responses', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: false,
+      status: 500,
+      text: async () => 'boom',
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const clientPrivate = client as unknown as TwitterClientPrivate;
+    clientPrivate.getFollowingQueryIds = async () => ['q1'];
+    clientPrivate.getFollowingViaRest = vi.fn().mockResolvedValue({ success: false, error: 'rest fail' });
+
+    const result = await client.getFollowing('user-id', 3);
+
+    expect(result.success).toBe(false);
+    expect(result.error).toContain('500');
+    expect(result.users).toBeUndefined();
+    expect(result.nextCursor).toBeUndefined();
+  });
+});

tests/twitter-client.following.test.ts

@@ -0,0 +1,380 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import { TwitterClient } from '../src/lib/twitter-client.js';
+import { validCookies } from './twitter-client-fixtures.js';
+
+const originalFetch = global.fetch;
+
+afterEach(() => {
+  global.fetch = originalFetch;
+  vi.restoreAllMocks();
+});
+
+describe('TwitterClient following/followers', () => {
+  let mockFetch: ReturnType<typeof vi.fn>;
+
+  const makeUserResult = (id: string, username: string, name = username) => ({
+    __typename: 'User',
+    rest_id: id,
+    is_blue_verified: true,
+    legacy: {
+      screen_name: username,
+      name,
+      description: `bio-${id}`,
+      followers_count: 10,
+      friends_count: 5,
+      profile_image_url_https: `https://example.com/${id}.jpg`,
+      created_at: '2024-01-01T00:00:00Z',
+    },
+  });
+
+  beforeEach(() => {
+    mockFetch = vi.fn();
+    global.fetch = mockFetch as unknown as typeof fetch;
+  });
+
+  it('fetches following users and filters invalid entries', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      status: 200,
+      json: async () => ({
+        data: {
+          user: {
+            result: {
+              timeline: {
+                timeline: {
+                  instructions: [
+                    {
+                      type: 'TimelineAddEntries',
+                      entries: [
+                        {
+                          content: {
+                            itemContent: {
+                              user_results: {
+                                result: makeUserResult('1', 'alpha', 'Alpha'),
+                              },
+                            },
+                          },
+                        },
+                        {
+                          content: {
+                            itemContent: {
+                              user_results: {
+                                result: { __typename: 'User', rest_id: '2' },
+                              },
+                            },
+                          },
+                        },
+                        {
+                          content: {
+                            itemContent: {
+                              user_results: {
+                                result: { __typename: 'TimelineUser' },
+                              },
+                            },
+                          },
+                        },
+                      ],
+                    },
+                  ],
+                },
+              },
+            },
+          },
+        },
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const clientPrivate = client as unknown as TwitterClient & { getFollowingQueryIds: () => Promise<string[]> };
+    clientPrivate.getFollowingQueryIds = async () => ['test'];
+
+    const result = await client.getFollowing('123', 2);
+
+    expect(result.success).toBe(true);
+    expect(result.users?.length).toBe(1);
+    expect(result.users?.[0].username).toBe('alpha');
+    expect(result.users?.[0].followersCount).toBe(10);
+    expect(result.users?.[0].followingCount).toBe(5);
+    expect(result.users?.[0].isBlueVerified).toBe(true);
+    expect(result.users?.[0].profileImageUrl).toBe('https://example.com/1.jpg');
+    expect(result.users?.[0].createdAt).toBe('2024-01-01T00:00:00Z');
+    const [url] = mockFetch.mock.calls[0];
+    expect(String(url)).toContain('/Following?');
+  });
+
+  it('fetches followers and unwraps visibility results', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      status: 200,
+      json: async () => ({
+        data: {
+          user: {
+            result: {
+              timeline: {
+                timeline: {
+                  instructions: [
+                    {
+                      entries: [
+                        {
+                          content: {
+                            itemContent: {
+                              user_results: {
+                                result: {
+                                  __typename: 'UserWithVisibilityResults',
+                                  user: makeUserResult('9', 'vis', 'Visible'),
+                                },
+                              },
+                            },
+                          },
+                        },
+                      ],
+                    },
+                  ],
+                },
+              },
+            },
+          },
+        },
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const clientPrivate = client as unknown as TwitterClient & { getFollowersQueryIds: () => Promise<string[]> };
+    clientPrivate.getFollowersQueryIds = async () => ['test'];
+
+    const result = await client.getFollowers('123', 1);
+
+    expect(result.success).toBe(true);
+    expect(result.users?.[0].username).toBe('vis');
+    const [url] = mockFetch.mock.calls[0];
+    expect(String(url)).toContain('/Followers?');
+  });
+
+  it('refreshes query IDs after 404s', async () => {
+    mockFetch.mockResolvedValueOnce({ ok: false, status: 404, text: async () => 'nope' }).mockResolvedValueOnce({
+      ok: true,
+      status: 200,
+      json: async () => ({
+        data: {
+          user: {
+            result: {
+              timeline: {
+                timeline: {
+                  instructions: [
+                    {
+                      entries: [
+                        {
+                          content: {
+                            itemContent: {
+                              user_results: {
+                                result: makeUserResult('1', 'alpha', 'Alpha'),
+                              },
+                            },
+                          },
+                        },
+                      ],
+                    },
+                  ],
+                },
+              },
+            },
+          },
+        },
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const clientPrivate = client as unknown as TwitterClient & {
+      getFollowingQueryIds: () => Promise<string[]>;
+      refreshQueryIds: () => Promise<void>;
+    };
+    clientPrivate.getFollowingQueryIds = async () => ['test'];
+    let refreshed = false;
+    clientPrivate.refreshQueryIds = async () => {
+      refreshed = true;
+    };
+
+    const result = await client.getFollowing('123', 1);
+
+    expect(refreshed).toBe(true);
+    expect(result.success).toBe(true);
+    expect(mockFetch).toHaveBeenCalledTimes(2);
+  });
+
+  it('falls back to REST following list after repeated 404s', async () => {
+    mockFetch
+      .mockResolvedValueOnce({ ok: false, status: 404, text: async () => 'nope' })
+      .mockResolvedValueOnce({ ok: false, status: 404, text: async () => 'still nope' })
+      .mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => ({
+          users: [
+            {
+              id_str: '1',
+              screen_name: 'alpha',
+              name: 'Alpha',
+              description: 'bio-1',
+              followers_count: 10,
+              friends_count: 5,
+              verified: true,
+              profile_image_url_https: 'https://example.com/1.jpg',
+              created_at: '2024-01-01T00:00:00Z',
+            },
+          ],
+        }),
+      });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const clientPrivate = client as unknown as TwitterClient & { getFollowingQueryIds: () => Promise<string[]> };
+    clientPrivate.getFollowingQueryIds = async () => ['test'];
+
+    const result = await client.getFollowing('123', 1);
+
+    expect(result.success).toBe(true);
+    expect(result.users?.[0].username).toBe('alpha');
+    expect(mockFetch).toHaveBeenCalledTimes(3);
+
+    const urls = mockFetch.mock.calls.map((call) => String(call[0]));
+    expect(urls[0]).toContain('/Following?');
+    expect(urls[1]).toContain('/Following?');
+    expect(urls[2]).toContain('/friends/list.json?');
+  });
+
+  it('falls back to REST followers list after repeated 404s', async () => {
+    mockFetch
+      .mockResolvedValueOnce({ ok: false, status: 404, text: async () => 'nope' })
+      .mockResolvedValueOnce({ ok: false, status: 404, text: async () => 'still nope' })
+      .mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => ({
+          users: [
+            {
+              id_str: '1',
+              screen_name: 'alpha',
+              name: 'Alpha',
+              description: 'bio-1',
+              followers_count: 10,
+              friends_count: 5,
+              verified: true,
+              profile_image_url_https: 'https://example.com/1.jpg',
+              created_at: '2024-01-01T00:00:00Z',
+            },
+          ],
+        }),
+      });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const clientPrivate = client as unknown as TwitterClient & { getFollowersQueryIds: () => Promise<string[]> };
+    clientPrivate.getFollowersQueryIds = async () => ['test'];
+
+    const result = await client.getFollowers('123', 1);
+
+    expect(result.success).toBe(true);
+    expect(result.users?.[0].username).toBe('alpha');
+    expect(mockFetch).toHaveBeenCalledTimes(3);
+
+    const urls = mockFetch.mock.calls.map((call) => String(call[0]));
+    expect(urls[0]).toContain('/Followers?');
+    expect(urls[1]).toContain('/Followers?');
+    expect(urls[2]).toContain('/followers/list.json?');
+  });
+
+  it('passes cursor parameter to followers API and returns nextCursor', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      status: 200,
+      json: async () => ({
+        data: {
+          user: {
+            result: {
+              timeline: {
+                timeline: {
+                  instructions: [
+                    {
+                      entries: [
+                        {
+                          content: {
+                            itemContent: {
+                              user_results: {
+                                result: makeUserResult('9', 'beta', 'Beta'),
+                              },
+                            },
+                          },
+                        },
+                        {
+                          content: {
+                            cursorType: 'Bottom',
+                            value: 'followers-next-cursor',
+                          },
+                        },
+                      ],
+                    },
+                  ],
+                },
+              },
+            },
+          },
+        },
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const clientPrivate = client as unknown as TwitterClient & { getFollowersQueryIds: () => Promise<string[]> };
+    clientPrivate.getFollowersQueryIds = async () => ['test'];
+
+    const result = await client.getFollowers('456', 50, 'my-cursor');
+
+    expect(result.success).toBe(true);
+    expect(result.users?.[0].username).toBe('beta');
+    expect(result.nextCursor).toBe('followers-next-cursor');
+
+    const [url] = mockFetch.mock.calls[0];
+    const parsedVars = JSON.parse(new URL(url as string).searchParams.get('variables') as string);
+    expect(parsedVars.cursor).toBe('my-cursor');
+  });
+
+  it('returns undefined nextCursor when no cursor in followers response', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      status: 200,
+      json: async () => ({
+        data: {
+          user: {
+            result: {
+              timeline: {
+                timeline: {
+                  instructions: [
+                    {
+                      entries: [
+                        {
+                          content: {
+                            itemContent: {
+                              user_results: {
+                                result: makeUserResult('1', 'only', 'Only'),
+                              },
+                            },
+                          },
+                        },
+                      ],
+                    },
+                  ],
+                },
+              },
+            },
+          },
+        },
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const clientPrivate = client as unknown as TwitterClient & { getFollowersQueryIds: () => Promise<string[]> };
+    clientPrivate.getFollowersQueryIds = async () => ['test'];
+
+    const result = await client.getFollowers('123', 20);
+
+    expect(result.success).toBe(true);
+    expect(result.nextCursor).toBeUndefined();
+  });
+});

tests/twitter-client.get-tweet.test.ts

@@ -0,0 +1,417 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import { TwitterClient } from '../src/lib/twitter-client.js';
+import { mapTweetResult } from '../src/lib/twitter-client-utils.js';
+import { validCookies } from './twitter-client-fixtures.js';
+
+const originalFetch = global.fetch;
+
+afterEach(() => {
+  global.fetch = originalFetch;
+  vi.restoreAllMocks();
+});
+
+describe('TwitterClient getTweet', () => {
+  let mockFetch: ReturnType<typeof vi.fn>;
+
+  beforeEach(() => {
+    mockFetch = vi.fn();
+    global.fetch = mockFetch;
+  });
+
+  it('should return tweet data from root tweetResult', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      json: async () => ({
+        data: {
+          tweetResult: {
+            result: {
+              rest_id: '12345',
+              legacy: {
+                full_text: 'Root tweet text',
+                created_at: 'Mon Jan 01 00:00:00 +0000 2024',
+                reply_count: 1,
+                retweet_count: 2,
+                favorite_count: 3,
+              },
+              core: {
+                user_results: {
+                  result: {
+                    legacy: {
+                      screen_name: 'user',
+                      name: 'User Name',
+                    },
+                  },
+                },
+              },
+            },
+          },
+        },
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getTweet('12345');
+
+    expect(result.success).toBe(true);
+    expect(result.tweet?.id).toBe('12345');
+    expect(result.tweet?.text).toBe('Root tweet text');
+    expect(result.tweet?.author.username).toBe('user');
+  });
+
+  it('should return tweet data found inside conversation instructions', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      json: async () => ({
+        data: {
+          threaded_conversation_with_injections_v2: {
+            instructions: [
+              {
+                entries: [
+                  {
+                    content: {
+                      itemContent: {
+                        tweet_results: {
+                          result: {
+                            rest_id: '6789',
+                            legacy: {
+                              full_text: 'Nested text',
+                              created_at: 'Mon Jan 01 00:00:00 +0000 2024',
+                              reply_count: 0,
+                              retweet_count: 0,
+                              favorite_count: 0,
+                            },
+                            core: {
+                              user_results: {
+                                result: {
+                                  legacy: {
+                                    screen_name: 'nestuser',
+                                    name: 'Nested User',
+                                  },
+                                },
+                              },
+                            },
+                          },
+                        },
+                      },
+                    },
+                  },
+                ],
+              },
+            ],
+          },
+        },
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getTweet('6789');
+
+    expect(result.success).toBe(true);
+    expect(result.tweet?.text).toBe('Nested text');
+    expect(result.tweet?.author.username).toBe('nestuser');
+  });
+
+  it('should report HTTP errors from getTweet', async () => {
+    mockFetch.mockResolvedValue({
+      ok: false,
+      status: 404,
+      text: async () => 'Not Found',
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getTweet('missing');
+
+    expect(result.success).toBe(false);
+    expect(result.error).toContain('HTTP 404');
+  });
+
+  it('should return article text when present', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      json: async () => ({
+        data: {
+          tweetResult: {
+            result: {
+              rest_id: 'article123',
+              legacy: {
+                full_text: '',
+                created_at: 'Mon Jan 01 00:00:00 +0000 2024',
+              },
+              article: {
+                article_results: {
+                  result: {
+                    title: '2025 LLM Year in Review',
+                    sections: [
+                      {
+                        items: [
+                          { text: 'Intro paragraph of the article.' },
+                          { content: { text: 'Second paragraph.' } },
+                        ],
+                      },
+                    ],
+                  },
+                },
+              },
+              core: {
+                user_results: {
+                  result: {
+                    legacy: {
+                      screen_name: 'author',
+                      name: 'Article Author',
+                    },
+                  },
+                },
+              },
+            },
+          },
+        },
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getTweet('article123');
+
+    expect(result.success).toBe(true);
+    expect(result.tweet?.text).toBe('2025 LLM Year in Review\n\nIntro paragraph of the article.\n\nSecond paragraph.');
+  });
+
+  it('should fall back to user article timeline for plain text', async () => {
+    mockFetch
+      .mockResolvedValueOnce({
+        ok: true,
+        json: async () => ({
+          data: {
+            tweetResult: {
+              result: {
+                rest_id: 'article123',
+                legacy: {
+                  full_text: '',
+                  created_at: 'Mon Jan 01 00:00:00 +0000 2024',
+                },
+                article: {
+                  article_results: {
+                    result: {
+                      title: '2025 LLM Year in Review',
+                    },
+                  },
+                },
+                core: {
+                  user_results: {
+                    result: {
+                      rest_id: '33836629',
+                      legacy: {
+                        screen_name: 'author',
+                        name: 'Article Author',
+                      },
+                    },
+                  },
+                },
+              },
+            },
+          },
+        }),
+      })
+      .mockResolvedValueOnce({
+        ok: true,
+        json: async () => ({
+          data: {
+            user: {
+              result: {
+                timeline: {
+                  timeline: {
+                    instructions: [
+                      {
+                        entries: [
+                          {
+                            content: {
+                              itemContent: {
+                                tweet_results: {
+                                  result: {
+                                    rest_id: 'article123',
+                                    article: {
+                                      article_results: {
+                                        result: {
+                                          title: '2025 LLM Year in Review',
+                                          plain_text: 'Full article body.',
+                                        },
+                                      },
+                                    },
+                                  },
+                                },
+                              },
+                            },
+                          },
+                        ],
+                      },
+                    ],
+                  },
+                },
+              },
+            },
+          },
+        }),
+      });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getTweet('article123');
+
+    expect(result.success).toBe(true);
+    expect(result.tweet?.text).toBe('2025 LLM Year in Review\n\nFull article body.');
+    expect(mockFetch).toHaveBeenCalledTimes(2);
+  });
+
+  it('should return note tweet text when present', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      json: async () => ({
+        data: {
+          tweetResult: {
+            result: {
+              rest_id: 'note123',
+              legacy: {
+                full_text: '',
+                created_at: 'Mon Jan 01 00:00:00 +0000 2024',
+              },
+              note_tweet: {
+                note_tweet_results: {
+                  result: {
+                    text: 'Long form note content.',
+                  },
+                },
+              },
+              core: {
+                user_results: {
+                  result: {
+                    legacy: {
+                      screen_name: 'noter',
+                      name: 'Note Author',
+                    },
+                  },
+                },
+              },
+            },
+          },
+        },
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getTweet('note123');
+
+    expect(result.success).toBe(true);
+    expect(result.tweet?.text).toBe('Long form note content.');
+  });
+
+  it('retries TweetDetail query id on 404', async () => {
+    const payload = {
+      data: {
+        tweetResult: {
+          result: {
+            rest_id: '1',
+            legacy: {
+              full_text: 'hello',
+              created_at: '2024-01-01T00:00:00Z',
+              reply_count: 0,
+              retweet_count: 0,
+              favorite_count: 0,
+            },
+            core: { user_results: { result: { legacy: { screen_name: 'root', name: 'Root' } } } },
+          },
+        },
+      },
+    };
+
+    mockFetch
+      .mockResolvedValueOnce({ ok: false, status: 404, text: async () => '' })
+      .mockResolvedValueOnce({ ok: false, status: 404, text: async () => '' })
+      .mockResolvedValueOnce({ ok: true, status: 200, json: async () => payload });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getTweet('1');
+
+    expect(result.success).toBe(true);
+    expect(result.tweet?.id).toBe('1');
+    expect(mockFetch).toHaveBeenCalledTimes(3);
+  });
+});
+
+describe('TwitterClient quoted tweets', () => {
+  const makeTweetResult = (
+    id: string,
+    text: string,
+    username = `user${id}`,
+    name = `User ${id}`,
+  ): Record<string, unknown> => ({
+    rest_id: id,
+    legacy: {
+      full_text: text,
+      created_at: '2024-01-01T00:00:00Z',
+      reply_count: 0,
+      retweet_count: 0,
+      favorite_count: 0,
+      conversation_id_str: id,
+    },
+    core: {
+      user_results: {
+        result: {
+          rest_id: `u${id}`,
+          legacy: { screen_name: username, name },
+        },
+      },
+    },
+  });
+
+  it('includes one level of quoted tweet by default', () => {
+    const quoted = makeTweetResult('2', 'quoted');
+    const root = makeTweetResult('1', 'root');
+    root.quoted_status_result = { result: quoted };
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const mapped = mapTweetResult(root, (client as { quoteDepth: number }).quoteDepth);
+
+    expect(mapped?.quotedTweet?.id).toBe('2');
+    expect(mapped?.quotedTweet?.quotedTweet).toBeUndefined();
+  });
+
+  it('honors quoteDepth = 0', () => {
+    const quoted = makeTweetResult('2', 'quoted');
+    const root = makeTweetResult('1', 'root');
+    root.quoted_status_result = { result: quoted };
+
+    const client = new TwitterClient({ cookies: validCookies, quoteDepth: 0 });
+    const mapped = mapTweetResult(root, (client as { quoteDepth: number }).quoteDepth);
+
+    expect(mapped?.quotedTweet).toBeUndefined();
+  });
+
+  it('recurses when quoteDepth > 1', () => {
+    const quoted2 = makeTweetResult('3', 'quoted2');
+    const quoted1 = makeTweetResult('2', 'quoted1');
+    quoted1.quoted_status_result = { result: quoted2 };
+    const root = makeTweetResult('1', 'root');
+    root.quoted_status_result = { result: quoted1 };
+
+    const client = new TwitterClient({ cookies: validCookies, quoteDepth: 2 });
+    const mapped = mapTweetResult(root, (client as { quoteDepth: number }).quoteDepth);
+
+    expect(mapped?.quotedTweet?.id).toBe('2');
+    expect(mapped?.quotedTweet?.quotedTweet?.id).toBe('3');
+    expect(mapped?.quotedTweet?.quotedTweet?.quotedTweet).toBeUndefined();
+  });
+
+  it('unwraps quoted tweet visibility wrappers', () => {
+    const quoted = makeTweetResult('2', 'quoted');
+    const root = makeTweetResult('1', 'root');
+    root.quoted_status_result = {
+      result: {
+        __typename: 'TweetWithVisibilityResults',
+        tweet: quoted,
+      },
+    };
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const mapped = mapTweetResult(root, (client as { quoteDepth: number }).quoteDepth);
+
+    expect(mapped?.quotedTweet?.id).toBe('2');
+  });
+});

tests/twitter-client.home-timeline.test.ts

@@ -0,0 +1,344 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import { TwitterClient } from '../src/lib/twitter-client.js';
+import { validCookies } from './twitter-client-fixtures.js';
+
+const originalFetch = global.fetch;
+
+afterEach(() => {
+  global.fetch = originalFetch;
+  vi.restoreAllMocks();
+});
+
+// Realistic fixture based on actual Twitter API response structure
+const makeHomeTimelineResponse = (tweetId: string, text: string, username: string) => ({
+  data: {
+    home: {
+      home_timeline_urt: {
+        instructions: [
+          {
+            entries: [
+              {
+                content: {
+                  itemContent: {
+                    tweet_results: {
+                      result: {
+                        __typename: 'Tweet',
+                        rest_id: tweetId,
+                        legacy: {
+                          full_text: text,
+                          created_at: 'Mon Jan 06 00:00:00 +0000 2025',
+                          reply_count: 5,
+                          retweet_count: 10,
+                          favorite_count: 25,
+                          conversation_id_str: tweetId,
+                        },
+                        core: {
+                          user_results: {
+                            result: {
+                              __typename: 'User',
+                              rest_id: 'u123',
+                              legacy: {
+                                screen_name: username,
+                                name: `${username} Name`,
+                              },
+                            },
+                          },
+                        },
+                      },
+                    },
+                  },
+                },
+              },
+            ],
+          },
+        ],
+      },
+    },
+  },
+});
+
+describe('TwitterClient home timeline', () => {
+  let mockFetch: ReturnType<typeof vi.fn>;
+
+  beforeEach(() => {
+    mockFetch = vi.fn();
+    global.fetch = mockFetch as unknown as typeof fetch;
+  });
+
+  describe('getHomeTimeline', () => {
+    it('should return tweets from For You feed', async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: true,
+        json: async () => makeHomeTimelineResponse('123456', 'Hello from For You feed!', 'testuser'),
+      });
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.getHomeTimeline(1);
+
+      expect(result.success).toBe(true);
+      expect(result.tweets).toHaveLength(1);
+      expect(result.tweets?.[0].id).toBe('123456');
+      expect(result.tweets?.[0].text).toBe('Hello from For You feed!');
+      expect(result.tweets?.[0].author.username).toBe('testuser');
+    });
+
+    it('should return error on non-ok response', async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: false,
+        status: 401,
+        text: async () => 'Unauthorized',
+      });
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.getHomeTimeline(1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('401');
+    });
+
+    it('should return error when API returns errors', async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: true,
+        json: async () => ({
+          errors: [{ message: 'Rate limit exceeded' }],
+        }),
+      });
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.getHomeTimeline(1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('Rate limit exceeded');
+    });
+  });
+
+  describe('getHomeLatestTimeline', () => {
+    it('should return tweets from Following feed', async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: true,
+        json: async () => makeHomeTimelineResponse('789012', 'Hello from Following feed!', 'chronouser'),
+      });
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.getHomeLatestTimeline(1);
+
+      expect(result.success).toBe(true);
+      expect(result.tweets).toHaveLength(1);
+      expect(result.tweets?.[0].id).toBe('789012');
+      expect(result.tweets?.[0].text).toBe('Hello from Following feed!');
+      expect(result.tweets?.[0].author.username).toBe('chronouser');
+    });
+
+    it('should return error on non-ok response', async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: false,
+        status: 403,
+        text: async () => 'Forbidden',
+      });
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.getHomeLatestTimeline(1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('403');
+    });
+  });
+
+  describe('pagination', () => {
+    it('should deduplicate tweets across pages', async () => {
+      // First page
+      mockFetch.mockResolvedValueOnce({
+        ok: true,
+        json: async () => ({
+          data: {
+            home: {
+              home_timeline_urt: {
+                instructions: [
+                  {
+                    entries: [
+                      {
+                        content: {
+                          itemContent: {
+                            tweet_results: {
+                              result: {
+                                rest_id: 'tweet1',
+                                legacy: { full_text: 'First tweet', created_at: 'Mon Jan 06 00:00:00 +0000 2025' },
+                                core: {
+                                  user_results: {
+                                    result: { rest_id: 'u1', legacy: { screen_name: 'user1', name: 'User 1' } },
+                                  },
+                                },
+                              },
+                            },
+                          },
+                        },
+                      },
+                      {
+                        content: {
+                          cursorType: 'Bottom',
+                          value: 'cursor123',
+                        },
+                      },
+                    ],
+                  },
+                ],
+              },
+            },
+          },
+        }),
+      });
+
+      // Second page with duplicate
+      mockFetch.mockResolvedValueOnce({
+        ok: true,
+        json: async () => ({
+          data: {
+            home: {
+              home_timeline_urt: {
+                instructions: [
+                  {
+                    entries: [
+                      {
+                        content: {
+                          itemContent: {
+                            tweet_results: {
+                              result: {
+                                rest_id: 'tweet1', // duplicate
+                                legacy: { full_text: 'First tweet', created_at: 'Mon Jan 06 00:00:00 +0000 2025' },
+                                core: {
+                                  user_results: {
+                                    result: { rest_id: 'u1', legacy: { screen_name: 'user1', name: 'User 1' } },
+                                  },
+                                },
+                              },
+                            },
+                          },
+                        },
+                      },
+                      {
+                        content: {
+                          itemContent: {
+                            tweet_results: {
+                              result: {
+                                rest_id: 'tweet2',
+                                legacy: { full_text: 'Second tweet', created_at: 'Mon Jan 06 00:00:00 +0000 2025' },
+                                core: {
+                                  user_results: {
+                                    result: { rest_id: 'u2', legacy: { screen_name: 'user2', name: 'User 2' } },
+                                  },
+                                },
+                              },
+                            },
+                          },
+                        },
+                      },
+                    ],
+                  },
+                ],
+              },
+            },
+          },
+        }),
+      });
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.getHomeTimeline(2);
+
+      expect(result.success).toBe(true);
+      expect(result.tweets).toHaveLength(2);
+      expect(result.tweets?.[0].id).toBe('tweet1');
+      expect(result.tweets?.[1].id).toBe('tweet2');
+    });
+
+    it('stops when a page only returns duplicates', async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: true,
+        json: async () => ({
+          data: {
+            home: {
+              home_timeline_urt: {
+                instructions: [
+                  {
+                    entries: [
+                      {
+                        content: {
+                          itemContent: {
+                            tweet_results: {
+                              result: {
+                                rest_id: 'tweet1',
+                                legacy: { full_text: 'First tweet', created_at: 'Mon Jan 06 00:00:00 +0000 2025' },
+                                core: {
+                                  user_results: {
+                                    result: { rest_id: 'u1', legacy: { screen_name: 'user1', name: 'User 1' } },
+                                  },
+                                },
+                              },
+                            },
+                          },
+                        },
+                      },
+                      {
+                        content: {
+                          cursorType: 'Bottom',
+                          value: 'cursor123',
+                        },
+                      },
+                    ],
+                  },
+                ],
+              },
+            },
+          },
+        }),
+      });
+
+      mockFetch.mockResolvedValueOnce({
+        ok: true,
+        json: async () => ({
+          data: {
+            home: {
+              home_timeline_urt: {
+                instructions: [
+                  {
+                    entries: [
+                      {
+                        content: {
+                          itemContent: {
+                            tweet_results: {
+                              result: {
+                                rest_id: 'tweet1',
+                                legacy: { full_text: 'First tweet', created_at: 'Mon Jan 06 00:00:00 +0000 2025' },
+                                core: {
+                                  user_results: {
+                                    result: { rest_id: 'u1', legacy: { screen_name: 'user1', name: 'User 1' } },
+                                  },
+                                },
+                              },
+                            },
+                          },
+                        },
+                      },
+                      {
+                        content: {
+                          cursorType: 'Bottom',
+                          value: 'cursor456',
+                        },
+                      },
+                    ],
+                  },
+                ],
+              },
+            },
+          },
+        }),
+      });
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const result = await client.getHomeTimeline(5);
+
+      expect(result.success).toBe(true);
+      expect(result.tweets).toHaveLength(1);
+      expect(mockFetch).toHaveBeenCalledTimes(2);
+    });
+  });
+});

tests/twitter-client.json-full.test.ts

@@ -0,0 +1,477 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import { TwitterClient } from '../src/lib/twitter-client.js';
+import { mapTweetResult, parseTweetsFromInstructions } from '../src/lib/twitter-client-utils.js';
+import { validCookies } from './twitter-client-fixtures.js';
+
+const originalFetch = global.fetch;
+
+afterEach(() => {
+  global.fetch = originalFetch;
+  vi.restoreAllMocks();
+});
+
+describe('mapTweetResult with includeRaw', () => {
+  const makeTweetResult = (id: string, text: string, username = `user${id}`) => ({
+    rest_id: id,
+    legacy: {
+      full_text: text,
+      created_at: '2024-01-01T00:00:00Z',
+      reply_count: 1,
+      retweet_count: 2,
+      favorite_count: 3,
+      conversation_id_str: id,
+    },
+    core: {
+      user_results: {
+        result: {
+          rest_id: `u${id}`,
+          legacy: { screen_name: username, name: `User ${id}` },
+        },
+      },
+    },
+    // Extra fields that should only be in _raw
+    entities: {
+      urls: [{ url: 'https://t.co/abc', expanded_url: 'https://example.com' }],
+      hashtags: [{ text: 'test' }],
+    },
+    extended_entities: {
+      media: [{ type: 'photo', media_url_https: 'https://pbs.twimg.com/media/test.jpg' }],
+    },
+  });
+
+  it('does not include _raw by default', () => {
+    const result = makeTweetResult('1', 'hello');
+    const mapped = mapTweetResult(result, { quoteDepth: 1 });
+
+    expect(mapped).toBeDefined();
+    expect(mapped?.id).toBe('1');
+    expect(mapped?.text).toBe('hello');
+    expect(mapped?._raw).toBeUndefined();
+  });
+
+  it('does not include _raw when includeRaw is false', () => {
+    const result = makeTweetResult('1', 'hello');
+    const mapped = mapTweetResult(result, { quoteDepth: 1, includeRaw: false });
+
+    expect(mapped).toBeDefined();
+    expect(mapped?._raw).toBeUndefined();
+  });
+
+  it('includes _raw when includeRaw is true', () => {
+    const result = makeTweetResult('1', 'hello');
+    const mapped = mapTweetResult(result, { quoteDepth: 1, includeRaw: true });
+
+    expect(mapped).toBeDefined();
+    expect(mapped?.id).toBe('1');
+    expect(mapped?.text).toBe('hello');
+    expect(mapped?._raw).toBeDefined();
+    expect(mapped?._raw).toBe(result);
+    // Verify the raw data contains fields not in the curated output
+    expect(mapped?._raw?.entities).toBeDefined();
+    expect(mapped?._raw?.extended_entities).toBeDefined();
+  });
+
+  it('includes _raw in quoted tweets when includeRaw is true', () => {
+    const quoted = makeTweetResult('2', 'quoted tweet');
+    const root = makeTweetResult('1', 'root tweet');
+    (root as Record<string, unknown>).quoted_status_result = { result: quoted };
+
+    const mapped = mapTweetResult(root, { quoteDepth: 1, includeRaw: true });
+
+    expect(mapped?._raw).toBeDefined();
+    expect(mapped?.quotedTweet?._raw).toBeDefined();
+    expect(mapped?.quotedTweet?._raw).toBe(quoted);
+  });
+
+  it('does not include _raw in quoted tweets when includeRaw is false', () => {
+    const quoted = makeTweetResult('2', 'quoted tweet');
+    const root = makeTweetResult('1', 'root tweet');
+    (root as Record<string, unknown>).quoted_status_result = { result: quoted };
+
+    const mapped = mapTweetResult(root, { quoteDepth: 1, includeRaw: false });
+
+    expect(mapped?._raw).toBeUndefined();
+    expect(mapped?.quotedTweet?._raw).toBeUndefined();
+  });
+
+  it('works with legacy number-only quoteDepth parameter', () => {
+    const result = makeTweetResult('1', 'hello');
+    // This tests backward compatibility
+    const mapped = mapTweetResult(result, 1);
+
+    expect(mapped).toBeDefined();
+    expect(mapped?.id).toBe('1');
+    expect(mapped?._raw).toBeUndefined();
+  });
+});
+
+describe('parseTweetsFromInstructions with includeRaw', () => {
+  const makeInstruction = (tweets: Array<{ id: string; text: string }>) => [
+    {
+      entries: tweets.map((t) => ({
+        content: {
+          itemContent: {
+            tweet_results: {
+              result: {
+                rest_id: t.id,
+                legacy: {
+                  full_text: t.text,
+                  created_at: '2024-01-01T00:00:00Z',
+                },
+                core: {
+                  user_results: {
+                    result: {
+                      legacy: { screen_name: `user${t.id}`, name: `User ${t.id}` },
+                    },
+                  },
+                },
+              },
+            },
+          },
+        },
+      })),
+    },
+  ];
+
+  it('does not include _raw by default', () => {
+    const instructions = makeInstruction([{ id: '1', text: 'tweet 1' }]);
+    const tweets = parseTweetsFromInstructions(instructions, { quoteDepth: 1 });
+
+    expect(tweets).toHaveLength(1);
+    expect(tweets[0]._raw).toBeUndefined();
+  });
+
+  it('includes _raw when includeRaw is true', () => {
+    const instructions = makeInstruction([
+      { id: '1', text: 'tweet 1' },
+      { id: '2', text: 'tweet 2' },
+    ]);
+    const tweets = parseTweetsFromInstructions(instructions, { quoteDepth: 1, includeRaw: true });
+
+    expect(tweets).toHaveLength(2);
+    expect(tweets[0]._raw).toBeDefined();
+    expect(tweets[0]._raw?.rest_id).toBe('1');
+    expect(tweets[1]._raw).toBeDefined();
+    expect(tweets[1]._raw?.rest_id).toBe('2');
+  });
+
+  it('works with legacy number-only quoteDepth parameter', () => {
+    const instructions = makeInstruction([{ id: '1', text: 'tweet 1' }]);
+    // This tests backward compatibility
+    const tweets = parseTweetsFromInstructions(instructions, 1);
+
+    expect(tweets).toHaveLength(1);
+    expect(tweets[0]._raw).toBeUndefined();
+  });
+});
+
+describe('TwitterClient getTweet with includeRaw option', () => {
+  let mockFetch: ReturnType<typeof vi.fn>;
+
+  beforeEach(() => {
+    mockFetch = vi.fn();
+    global.fetch = mockFetch;
+  });
+
+  const mockTweetResponse = {
+    data: {
+      tweetResult: {
+        result: {
+          rest_id: '12345',
+          legacy: {
+            full_text: 'Test tweet',
+            created_at: 'Mon Jan 01 00:00:00 +0000 2024',
+            reply_count: 1,
+            retweet_count: 2,
+            favorite_count: 3,
+          },
+          core: {
+            user_results: {
+              result: {
+                rest_id: 'u123',
+                legacy: { screen_name: 'testuser', name: 'Test User' },
+              },
+            },
+          },
+          entities: {
+            urls: [{ url: 'https://t.co/abc', expanded_url: 'https://example.com' }],
+          },
+        },
+      },
+    },
+  };
+
+  it('does not include _raw by default', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      json: async () => mockTweetResponse,
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getTweet('12345');
+
+    expect(result.success).toBe(true);
+    expect(result.tweet?._raw).toBeUndefined();
+  });
+
+  it('includes _raw when includeRaw option is true', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      json: async () => mockTweetResponse,
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getTweet('12345', { includeRaw: true });
+
+    expect(result.success).toBe(true);
+    expect(result.tweet?._raw).toBeDefined();
+    expect(result.tweet?._raw?.rest_id).toBe('12345');
+    expect(result.tweet?._raw?.entities).toBeDefined();
+  });
+});
+
+describe('TwitterClient getReplies with includeRaw option', () => {
+  let mockFetch: ReturnType<typeof vi.fn>;
+
+  beforeEach(() => {
+    mockFetch = vi.fn();
+    global.fetch = mockFetch;
+  });
+
+  const mockRepliesResponse = {
+    data: {
+      threaded_conversation_with_injections_v2: {
+        instructions: [
+          {
+            entries: [
+              {
+                content: {
+                  itemContent: {
+                    tweet_results: {
+                      result: {
+                        rest_id: '99999',
+                        legacy: {
+                          full_text: 'A reply',
+                          created_at: 'Mon Jan 01 00:00:00 +0000 2024',
+                          in_reply_to_status_id_str: '12345',
+                        },
+                        core: {
+                          user_results: {
+                            result: {
+                              legacy: { screen_name: 'replier', name: 'Replier' },
+                            },
+                          },
+                        },
+                      },
+                    },
+                  },
+                },
+              },
+            ],
+          },
+        ],
+      },
+    },
+  };
+
+  it('includes _raw in replies when includeRaw is true', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      json: async () => mockRepliesResponse,
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getReplies('12345', { includeRaw: true });
+
+    expect(result.success).toBe(true);
+    expect(result.tweets).toHaveLength(1);
+    expect(result.tweets?.[0]._raw).toBeDefined();
+    expect(result.tweets?.[0]._raw?.rest_id).toBe('99999');
+  });
+});
+
+describe('TwitterClient getThread with includeRaw option', () => {
+  let mockFetch: ReturnType<typeof vi.fn>;
+
+  beforeEach(() => {
+    mockFetch = vi.fn();
+    global.fetch = mockFetch;
+  });
+
+  const mockThreadResponse = {
+    data: {
+      threaded_conversation_with_injections_v2: {
+        instructions: [
+          {
+            entries: [
+              {
+                content: {
+                  itemContent: {
+                    tweet_results: {
+                      result: {
+                        rest_id: '12345',
+                        legacy: {
+                          full_text: 'Thread start',
+                          created_at: 'Mon Jan 01 00:00:00 +0000 2024',
+                          conversation_id_str: '12345',
+                        },
+                        core: {
+                          user_results: {
+                            result: {
+                              legacy: { screen_name: 'author', name: 'Author' },
+                            },
+                          },
+                        },
+                      },
+                    },
+                  },
+                },
+              },
+            ],
+          },
+        ],
+      },
+    },
+  };
+
+  it('includes _raw in thread tweets when includeRaw is true', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      json: async () => mockThreadResponse,
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getThread('12345', { includeRaw: true });
+
+    expect(result.success).toBe(true);
+    expect(result.tweets).toHaveLength(1);
+    expect(result.tweets?.[0]._raw).toBeDefined();
+  });
+});
+
+describe('TwitterClient search with includeRaw option', () => {
+  let mockFetch: ReturnType<typeof vi.fn>;
+
+  beforeEach(() => {
+    mockFetch = vi.fn();
+    global.fetch = mockFetch;
+  });
+
+  const mockSearchResponse = {
+    data: {
+      search_by_raw_query: {
+        search_timeline: {
+          timeline: {
+            instructions: [
+              {
+                entries: [
+                  {
+                    content: {
+                      itemContent: {
+                        tweet_results: {
+                          result: {
+                            rest_id: '11111',
+                            legacy: {
+                              full_text: 'Search result',
+                              created_at: 'Mon Jan 01 00:00:00 +0000 2024',
+                            },
+                            core: {
+                              user_results: {
+                                result: {
+                                  legacy: { screen_name: 'found', name: 'Found User' },
+                                },
+                              },
+                            },
+                          },
+                        },
+                      },
+                    },
+                  },
+                ],
+              },
+            ],
+          },
+        },
+      },
+    },
+  };
+
+  it('includes _raw in search results when includeRaw is true', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      json: async () => mockSearchResponse,
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.search('test query', 10, { includeRaw: true });
+
+    expect(result.success).toBe(true);
+    expect(result.tweets).toHaveLength(1);
+    expect(result.tweets?.[0]._raw).toBeDefined();
+    expect(result.tweets?.[0]._raw?.rest_id).toBe('11111');
+  });
+
+  it('does not include _raw in search results by default', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      json: async () => mockSearchResponse,
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.search('test query', 10);
+
+    expect(result.success).toBe(true);
+    expect(result.tweets?.[0]._raw).toBeUndefined();
+  });
+});
+
+describe('--json-full flag behavior (without --json)', () => {
+  let mockFetch: ReturnType<typeof vi.fn>;
+
+  beforeEach(() => {
+    mockFetch = vi.fn();
+    global.fetch = mockFetch;
+  });
+
+  const mockTweetResponse = {
+    data: {
+      tweetResult: {
+        result: {
+          rest_id: '12345',
+          legacy: {
+            full_text: 'Test tweet',
+            created_at: 'Mon Jan 01 00:00:00 +0000 2024',
+          },
+          core: {
+            user_results: {
+              result: {
+                legacy: { screen_name: 'testuser', name: 'Test User' },
+              },
+            },
+          },
+        },
+      },
+    },
+  };
+
+  it('includeRaw works independently without requiring other json options', async () => {
+    // This tests that --json-full alone (without --json) will include _raw
+    // The CLI handles output format separately, but the client should work with just includeRaw
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      json: async () => mockTweetResponse,
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    // Only passing includeRaw: true, simulating --json-full without --json
+    const result = await client.getTweet('12345', { includeRaw: true });
+
+    expect(result.success).toBe(true);
+    expect(result.tweet).toBeDefined();
+    expect(result.tweet?._raw).toBeDefined();
+    // Verify the result is JSON-serializable (would be used for JSON output)
+    const serialized = JSON.stringify(result.tweet);
+    expect(serialized).toContain('"_raw"');
+    expect(serialized).toContain('"id":"12345"');
+  });
+});

tests/twitter-client.json-full.timelines.test.ts

@@ -0,0 +1,243 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import { TwitterClient } from '../src/lib/twitter-client.js';
+import { type TwitterClientPrivate, validCookies } from './twitter-client-fixtures.js';
+
+const originalFetch = global.fetch;
+
+afterEach(() => {
+  global.fetch = originalFetch;
+  vi.restoreAllMocks();
+});
+
+describe('TwitterClient timelines includeRaw', () => {
+  let mockFetch: ReturnType<typeof vi.fn>;
+
+  beforeEach(() => {
+    mockFetch = vi.fn();
+    global.fetch = mockFetch as unknown as typeof fetch;
+  });
+
+  it('includes _raw for bookmarks when includeRaw is true', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      status: 200,
+      json: async () => ({
+        data: {
+          bookmark_timeline_v2: {
+            timeline: {
+              instructions: [
+                {
+                  entries: [
+                    {
+                      content: {
+                        itemContent: {
+                          tweet_results: {
+                            result: {
+                              rest_id: '1',
+                              legacy: {
+                                full_text: 'saved',
+                                created_at: '2024-01-01T00:00:00Z',
+                              },
+                              core: {
+                                user_results: {
+                                  result: { legacy: { screen_name: 'root', name: 'Root' } },
+                                },
+                              },
+                              entities: {
+                                hashtags: [{ text: 'bookmark' }],
+                              },
+                            },
+                          },
+                        },
+                      },
+                    },
+                  ],
+                },
+              ],
+            },
+          },
+        },
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getBookmarks(1, { includeRaw: true });
+
+    expect(result.success).toBe(true);
+    expect(result.tweets).toHaveLength(1);
+    expect(result.tweets?.[0]._raw).toBeDefined();
+    expect(result.tweets?.[0]._raw?.entities?.hashtags?.[0].text).toBe('bookmark');
+  });
+
+  it('includes _raw for bookmark folder timelines when includeRaw is true', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      status: 200,
+      json: async () => ({
+        data: {
+          bookmark_collection_timeline: {
+            timeline: {
+              instructions: [
+                {
+                  entries: [
+                    {
+                      content: {
+                        itemContent: {
+                          tweet_results: {
+                            result: {
+                              rest_id: '9',
+                              legacy: {
+                                full_text: 'saved in folder',
+                                created_at: '2024-01-01T00:00:00Z',
+                              },
+                              core: {
+                                user_results: {
+                                  result: { legacy: { screen_name: 'folder', name: 'Folder' } },
+                                },
+                              },
+                              entities: {
+                                urls: [{ url: 'https://t.co/abc', expanded_url: 'https://example.com' }],
+                              },
+                            },
+                          },
+                        },
+                      },
+                    },
+                  ],
+                },
+              ],
+            },
+          },
+        },
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getBookmarkFolderTimeline('123', 1, { includeRaw: true });
+
+    expect(result.success).toBe(true);
+    expect(result.tweets).toHaveLength(1);
+    expect(result.tweets?.[0]._raw).toBeDefined();
+    expect(result.tweets?.[0]._raw?.entities?.urls?.[0].expanded_url).toBe('https://example.com');
+  });
+
+  it('includes _raw for likes when includeRaw is true', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      status: 200,
+      json: async () => ({
+        data: {
+          user: {
+            result: {
+              timeline: {
+                timeline: {
+                  instructions: [
+                    {
+                      entries: [
+                        {
+                          content: {
+                            itemContent: {
+                              tweet_results: {
+                                result: {
+                                  rest_id: '2',
+                                  legacy: {
+                                    full_text: 'liked',
+                                    created_at: '2024-01-01T00:00:00Z',
+                                  },
+                                  core: {
+                                    user_results: {
+                                      result: { legacy: { screen_name: 'root', name: 'Root' } },
+                                    },
+                                  },
+                                  entities: {
+                                    hashtags: [{ text: 'like' }],
+                                  },
+                                },
+                              },
+                            },
+                          },
+                        },
+                      ],
+                    },
+                  ],
+                },
+              },
+            },
+          },
+        },
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const clientPrivate = client as unknown as TwitterClientPrivate;
+    clientPrivate.getCurrentUser = async () => ({
+      success: true,
+      user: { id: '42', username: 'tester', name: 'Tester' },
+    });
+    clientPrivate.getLikesQueryIds = async () => ['test'];
+
+    const result = await client.getLikes(1, { includeRaw: true });
+
+    expect(result.success).toBe(true);
+    expect(result.tweets).toHaveLength(1);
+    expect(result.tweets?.[0]._raw).toBeDefined();
+    expect(result.tweets?.[0]._raw?.entities?.hashtags?.[0].text).toBe('like');
+  });
+
+  it('includes _raw for list timeline when includeRaw is true', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      status: 200,
+      json: async () => ({
+        data: {
+          list: {
+            tweets_timeline: {
+              timeline: {
+                instructions: [
+                  {
+                    entries: [
+                      {
+                        content: {
+                          itemContent: {
+                            tweet_results: {
+                              result: {
+                                rest_id: '777',
+                                legacy: {
+                                  full_text: 'from list',
+                                  created_at: '2024-01-01T00:00:00Z',
+                                },
+                                core: {
+                                  user_results: {
+                                    result: { legacy: { screen_name: 'listmember', name: 'List Member' } },
+                                  },
+                                },
+                                entities: {
+                                  hashtags: [{ text: 'listtweet' }],
+                                },
+                              },
+                            },
+                          },
+                        },
+                      },
+                    ],
+                  },
+                ],
+              },
+            },
+          },
+        },
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const clientPrivate = client as unknown as TwitterClientPrivate;
+    clientPrivate.getListTimelineQueryIds = async () => ['test'];
+
+    const result = await client.getListTimeline('12345', 1, { includeRaw: true });
+
+    expect(result.success).toBe(true);
+    expect(result.tweets).toHaveLength(1);
+    expect(result.tweets?.[0]._raw).toBeDefined();
+    expect(result.tweets?.[0]._raw?.entities?.hashtags?.[0].text).toBe('listtweet');
+  });
+});

tests/twitter-client.likes.test.ts

@@ -0,0 +1,305 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import { TwitterClient } from '../src/lib/twitter-client.js';
+import { type TwitterClientPrivate, validCookies } from './twitter-client-fixtures.js';
+
+const originalFetch = global.fetch;
+
+afterEach(() => {
+  global.fetch = originalFetch;
+  vi.restoreAllMocks();
+});
+describe('TwitterClient likes', () => {
+  let mockFetch: ReturnType<typeof vi.fn>;
+
+  beforeEach(() => {
+    mockFetch = vi.fn();
+    global.fetch = mockFetch as unknown as typeof fetch;
+  });
+
+  it('fetches likes and parses tweet results', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      status: 200,
+      json: async () => ({
+        data: {
+          user: {
+            result: {
+              timeline: {
+                timeline: {
+                  instructions: [
+                    {
+                      entries: [
+                        {
+                          content: {
+                            itemContent: {
+                              tweet_results: {
+                                result: {
+                                  rest_id: '2',
+                                  legacy: {
+                                    full_text: 'liked',
+                                    created_at: '2024-01-01T00:00:00Z',
+                                    reply_count: 0,
+                                    retweet_count: 0,
+                                    favorite_count: 0,
+                                    conversation_id_str: '2',
+                                  },
+                                  core: {
+                                    user_results: {
+                                      result: {
+                                        rest_id: 'u2',
+                                        legacy: { screen_name: 'root', name: 'Root' },
+                                      },
+                                    },
+                                  },
+                                },
+                              },
+                            },
+                          },
+                        },
+                      ],
+                    },
+                  ],
+                },
+              },
+            },
+          },
+        },
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const clientPrivate = client as unknown as TwitterClientPrivate;
+    clientPrivate.getCurrentUser = async () => ({
+      success: true,
+      user: { id: '42', username: 'tester', name: 'Tester' },
+    });
+    clientPrivate.getLikesQueryIds = async () => ['test'];
+
+    const result = await client.getLikes(2);
+
+    expect(result.success).toBe(true);
+    expect(result.tweets?.[0].id).toBe('2');
+    expect(mockFetch).toHaveBeenCalledTimes(1);
+
+    const [url, options] = mockFetch.mock.calls[0];
+    expect(options.method).toBe('GET');
+    expect(String(url)).toContain('/Likes?');
+    const parsedVars = JSON.parse(new URL(url as string).searchParams.get('variables') as string);
+    expect(parsedVars.userId).toBe('42');
+    expect(parsedVars.count).toBe(2);
+    const parsedFeatures = JSON.parse(new URL(url as string).searchParams.get('features') as string);
+    expect(parsedFeatures.graphql_timeline_v2_bookmark_timeline).toBeUndefined();
+  });
+
+  it('paginates likes when count exceeds the first page', async () => {
+    mockFetch
+      .mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => ({
+          data: {
+            user: {
+              result: {
+                timeline: {
+                  timeline: {
+                    instructions: [
+                      {
+                        entries: [
+                          {
+                            content: {
+                              itemContent: {
+                                tweet_results: {
+                                  result: {
+                                    rest_id: '1',
+                                    legacy: {
+                                      full_text: 'liked page 1',
+                                      created_at: '2024-01-01T00:00:00Z',
+                                      reply_count: 0,
+                                      retweet_count: 0,
+                                      favorite_count: 0,
+                                      conversation_id_str: '1',
+                                    },
+                                    core: {
+                                      user_results: {
+                                        result: {
+                                          rest_id: 'u1',
+                                          legacy: { screen_name: 'root', name: 'Root' },
+                                        },
+                                      },
+                                    },
+                                  },
+                                },
+                              },
+                            },
+                          },
+                          {
+                            content: {
+                              cursorType: 'Bottom',
+                              value: 'cursor-1',
+                            },
+                          },
+                        ],
+                      },
+                    ],
+                  },
+                },
+              },
+            },
+          },
+        }),
+      })
+      .mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => ({
+          data: {
+            user: {
+              result: {
+                timeline: {
+                  timeline: {
+                    instructions: [
+                      {
+                        entries: [
+                          {
+                            content: {
+                              itemContent: {
+                                tweet_results: {
+                                  result: {
+                                    rest_id: '2',
+                                    legacy: {
+                                      full_text: 'liked page 2',
+                                      created_at: '2024-01-02T00:00:00Z',
+                                      reply_count: 0,
+                                      retweet_count: 0,
+                                      favorite_count: 0,
+                                      conversation_id_str: '2',
+                                    },
+                                    core: {
+                                      user_results: {
+                                        result: {
+                                          rest_id: 'u2',
+                                          legacy: { screen_name: 'root', name: 'Root' },
+                                        },
+                                      },
+                                    },
+                                  },
+                                },
+                              },
+                            },
+                          },
+                        ],
+                      },
+                    ],
+                  },
+                },
+              },
+            },
+          },
+        }),
+      });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const clientPrivate = client as unknown as TwitterClientPrivate;
+    clientPrivate.getCurrentUser = async () => ({
+      success: true,
+      user: { id: '42', username: 'tester', name: 'Tester' },
+    });
+    clientPrivate.getLikesQueryIds = async () => ['test'];
+
+    const result = await client.getLikes(3);
+
+    expect(result.success).toBe(true);
+    expect(result.tweets?.map((tweet) => tweet.id)).toEqual(['1', '2']);
+    expect(mockFetch).toHaveBeenCalledTimes(2);
+
+    const secondVars = JSON.parse(
+      new URL(mockFetch.mock.calls[1][0] as string).searchParams.get('variables') as string,
+    );
+    expect(secondVars.cursor).toBe('cursor-1');
+  });
+
+  it('respects maxPages when fetching all likes', async () => {
+    mockFetch.mockResolvedValueOnce({
+      ok: true,
+      status: 200,
+      json: async () => ({
+        data: {
+          user: {
+            result: {
+              timeline: {
+                timeline: {
+                  instructions: [
+                    {
+                      entries: [
+                        {
+                          content: {
+                            itemContent: {
+                              tweet_results: {
+                                result: {
+                                  rest_id: '1',
+                                  legacy: {
+                                    full_text: 'liked page 1',
+                                    created_at: '2024-01-01T00:00:00Z',
+                                    reply_count: 0,
+                                    retweet_count: 0,
+                                    favorite_count: 0,
+                                    conversation_id_str: '1',
+                                  },
+                                  core: {
+                                    user_results: {
+                                      result: {
+                                        rest_id: 'u1',
+                                        legacy: { screen_name: 'root', name: 'Root' },
+                                      },
+                                    },
+                                  },
+                                },
+                              },
+                            },
+                          },
+                        },
+                        {
+                          content: {
+                            cursorType: 'Bottom',
+                            value: 'cursor-1',
+                          },
+                        },
+                      ],
+                    },
+                  ],
+                },
+              },
+            },
+          },
+        },
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const clientPrivate = client as unknown as TwitterClientPrivate;
+    clientPrivate.getCurrentUser = async () => ({
+      success: true,
+      user: { id: '42', username: 'tester', name: 'Tester' },
+    });
+    clientPrivate.getLikesQueryIds = async () => ['test'];
+
+    const result = await client.getAllLikes({ maxPages: 1 });
+
+    expect(result.success).toBe(true);
+    expect(result.tweets?.map((tweet) => tweet.id)).toEqual(['1']);
+    expect(result.nextCursor).toBe('cursor-1');
+    expect(mockFetch).toHaveBeenCalledTimes(1);
+  });
+
+  it('returns an error when current user is unavailable', async () => {
+    const client = new TwitterClient({ cookies: validCookies });
+    const clientPrivate = client as unknown as TwitterClientPrivate;
+    clientPrivate.getCurrentUser = async () => ({ success: false, error: 'no user' });
+
+    const result = await client.getLikes(1);
+
+    expect(result.success).toBe(false);
+    expect(result.error).toBe('no user');
+    expect(mockFetch).not.toHaveBeenCalled();
+  });
+});

tests/twitter-client.lists.memberships.test.ts

@@ -0,0 +1,137 @@
+// ABOUTME: Tests for TwitterClient list methods.
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import { TwitterClient } from '../src/lib/twitter-client.js';
+import { type TwitterClientPrivate, validCookies } from './twitter-client-fixtures.js';
+
+const originalFetch = global.fetch;
+
+afterEach(() => {
+  global.fetch = originalFetch;
+  vi.restoreAllMocks();
+});
+
+describe('TwitterClient lists memberships', () => {
+  let mockFetch: ReturnType<typeof vi.fn>;
+
+  beforeEach(() => {
+    mockFetch = vi.fn();
+    global.fetch = mockFetch as unknown as typeof fetch;
+  });
+
+  describe('getListMemberships', () => {
+    it('fetches list memberships and parses list results', async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => ({
+          data: {
+            user: {
+              result: {
+                timeline: {
+                  timeline: {
+                    instructions: [
+                      {
+                        entries: [
+                          {
+                            content: {
+                              itemContent: {
+                                list: {
+                                  id_str: '5555',
+                                  name: 'Member List',
+                                  member_count: 100,
+                                  user_results: {
+                                    result: {
+                                      rest_id: '99999',
+                                      legacy: { screen_name: 'otheruser', name: 'Other User' },
+                                    },
+                                  },
+                                },
+                              },
+                            },
+                          },
+                        ],
+                      },
+                    ],
+                  },
+                },
+              },
+            },
+          },
+        }),
+      });
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientPrivate;
+      clientPrivate.getCurrentUser = async () => ({
+        success: true,
+        user: { id: '12345', username: 'testuser', name: 'Test User' },
+      });
+      clientPrivate.getListMembershipsQueryIds = async () => ['test'];
+
+      const result = await client.getListMemberships(100);
+
+      expect(result.success).toBe(true);
+      expect(result.lists?.[0].id).toBe('5555');
+      expect(result.lists?.[0].name).toBe('Member List');
+      expect(result.lists?.[0].owner?.username).toBe('otheruser');
+    });
+
+    it('retries on 404 error after refreshing query IDs', async () => {
+      mockFetch
+        .mockResolvedValueOnce({
+          ok: false,
+          status: 404,
+          text: async () => 'Not Found',
+        })
+        .mockResolvedValueOnce({
+          ok: true,
+          status: 200,
+          json: async () => ({
+            data: {
+              user: {
+                result: {
+                  timeline: {
+                    timeline: {
+                      instructions: [
+                        {
+                          entries: [
+                            {
+                              content: {
+                                itemContent: {
+                                  list: {
+                                    id_str: '6666',
+                                    name: 'Retry Membership List',
+                                    mode: 'Public',
+                                  },
+                                },
+                              },
+                            },
+                          ],
+                        },
+                      ],
+                    },
+                  },
+                },
+              },
+            },
+          }),
+        });
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientPrivate;
+      clientPrivate.getCurrentUser = async () => ({
+        success: true,
+        user: { id: '12345', username: 'testuser', name: 'Test User' },
+      });
+      clientPrivate.getListMembershipsQueryIds = async () => ['test'];
+      clientPrivate.refreshQueryIds = async () => {};
+
+      const result = await client.getListMemberships(100);
+
+      expect(result.success).toBe(true);
+      expect(result.lists?.[0].id).toBe('6666');
+      expect(mockFetch).toHaveBeenCalledTimes(2);
+    });
+  });
+});