chore(release): 0.5.1

feat: add following and followers commands

.gitignore

@@ -16,3 +16,7 @@ twitter-cli.bin
 bird
 .env
 .*.bun-build
+*.zip
+*.tar
+*.tar.gz
+*.tgz

.npmrc

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

CHANGELOG.md

@@ -1,5 +1,102 @@
 # Changelog
 
+## 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
+
+### Added
+- Cookie source selection: `--cookie-source safari|chrome|firefox` (repeatable) + `cookieSource` config (string or array).
+
+### Fixed
+- `tweet`/`reply`: fallback to `statuses/update.json` when GraphQL `CreateTweet` returns error 226 (“automated request”).
+
+### Breaking
+- Remove `allowSafari`/`allowChrome`/`allowFirefox` config toggles in favor of `cookieSource` ordering.
+
+## 0.3.0 — 2025-12-26
+
+### Added
+- Safari cookie extraction (`Cookies.binarycookies`) + `allowSafari` config toggle.
+
+### Changed
+- Removed the Sweetistics engine + fallback. `bird` is GraphQL-only.
+- Browser cookie fallback order: Safari → Chrome → Firefox.
+
+### Tests
+- Enforce coverage thresholds (>= 70% statements/branches/functions/lines) + expand unit coverage for version/output/Twitter client branches.
+
+## 0.2.0 — 2025-12-26
+
+### Added
+- Output controls: `--plain`, `--no-emoji`, `--no-color` (respects `NO_COLOR`).
+- `help` command: `bird help <command>`.
+- Runtime GraphQL query ID refresh: `bird query-ids --fresh` (cached on disk; auto-retry on 404; override cache via `BIRD_QUERY_IDS_CACHE`).
+- GraphQL media uploads via `--media` (up to 4 images/GIFs, or 1 video).
+
+### Fixed
+- CLI `--version`: read version from `package.json`/`VERSION` (no hardcoded string) + append git sha when available.
+
+### Changed
+- `mentions`: no hardcoded user; defaults to authenticated user or accepts `--user @handle`.
+- GraphQL query ID updater: correctly pairs `operationName` ↔ `queryId` (CreateTweet/CreateRetweet/etc).
+- `build:dist`: copies `src/lib/query-ids.json` into `dist/lib/query-ids.json` (keeps `dist/` in sync).
+- `--engine graphql`: strict GraphQL-only (disables Sweetistics fallback).
+
+## 0.1.1 — 2025-12-26
+
+### Changed
+- Engine default now `auto` (GraphQL primary; Sweetistics only on fallback when configured).
+
+### Tests
+- Add engine resolution tests for auto/default behavior.
+
+### Fixed
+- GraphQL read: rotate TweetDetail query IDs with fallback to avoid 404s.
+
 ## 0.1.0 — 2025-12-20
 
 ### Added

README.md

@@ -1,6 +1,11 @@
 # bird 🐦 — fast X CLI for tweeting, replying, and reading
 
-`bird` is a fast X CLI for tweeting, replying, and reading. It uses either GraphQL cookies or the Sweetistics API.
+`bird` is a fast X CLI for tweeting, replying, and reading via X/Twitter GraphQL (cookie auth).
+
+## Disclaimer
+
+This project uses X/Twitter’s **undocumented** web GraphQL API (and cookie auth). X can change endpoints, query IDs,
+and anti-bot behavior at any time — **expect this to break without notice**.
 
 ## Install
 
@@ -8,6 +13,17 @@
 npm install -g @steipete/bird
 # or
 pnpm add -g @steipete/bird
+# or
+bun add -g @steipete/bird
+
+# one-shot (no install)
+bunx @steipete/bird whoami
+```
+
+Homebrew (macOS, prebuilt Bun binary):
+
+```bash
+brew install steipete/tap/bird
 ```
 
 ## Quickstart
@@ -16,6 +32,9 @@ pnpm add -g @steipete/bird
 # Show the logged-in account
 bird whoami
 
+# Discover command help
+bird help whoami
+
 # Read a tweet (URL or ID)
 bird read https://x.com/user/status/1234567890123456789
 bird 1234567890123456789 --json
@@ -27,41 +46,92 @@ bird replies 1234567890123456789
 # Search + mentions
 bird search "from:steipete" -n 5
 bird mentions -n 5
+bird mentions --user @steipete -n 5
+
+# Bookmarks
+bird bookmarks -n 5
+bird bookmarks --folder-id 123456789123456789 -n 5 # https://x.com/i/bookmarks/<folder-id>
+
+# Likes
+bird likes -n 5
+
+# 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
+```
+
+## 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 });
+const result = await client.search('from:steipete', 50);
 ```
 
 ## Commands
 
 - `bird tweet "<text>"` — post a new tweet.
 - `bird reply <tweet-id-or-url> "<text>"` — reply to a tweet using its ID or URL.
+- `bird help [command]` — show help (or help for a subcommand).
+- `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 mentions [-n count] [--json]` — find tweets mentioning @clawdbot.
+- `bird mentions [-n count] [--user @handle] [--json]` — find tweets mentioning a user (defaults to the authenticated user).
+- `bird bookmarks [-n count] [--folder-id id] [--json]` — list your bookmarked tweets (or a specific bookmark folder).
+- `bird likes [-n count] [--json]` — list your liked tweets.
+- `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.
 
-## Engines
-
-- `--engine graphql` (default) — use Twitter/X GraphQL with cookies (Chrome/Firefox/env/flags).
-- `--engine sweetistics` — use Sweetistics API key (no browser cookies needed).
-- `--engine auto` — Sweetistics if a key is available, otherwise GraphQL.
-
 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`).
+- `--media <path>`: attach media file (repeatable, up to 4 images or 1 video).
+- `--alt <text>`: alt text for the corresponding `--media` (repeatable).
 
 ## Authentication (GraphQL)
 
+GraphQL mode uses your existing X/Twitter web session (no password prompt). It sends requests to internal
+X endpoints and authenticates via cookies (`auth_token`, `ct0`).
+
+Write operations:
+- `tweet`/`reply` primarily use GraphQL (`CreateTweet`).
+- If GraphQL returns error `226` (“automated request”), `bird` falls back to the legacy `statuses/update.json` endpoint.
+
 `bird` resolves credentials in this order:
 
 1. CLI flags: `--auth-token`, `--ct0`
 2. Environment variables: `AUTH_TOKEN`, `CT0` (fallback: `TWITTER_AUTH_TOKEN`, `TWITTER_CT0`)
-3. Browser cookies (macOS): Firefox or Chrome profiles
+3. Browser cookies via `@steipete/sweet-cookie` (override via `--cookie-source` order)
 
 Browser cookie sources:
-- Firefox (default): `~/Library/Application Support/Firefox/Profiles/<profile>/cookies.sqlite`
+- Safari: `~/Library/Cookies/Cookies.binarycookies` (fallback: `~/Library/Containers/com.apple.Safari/Data/Library/Cookies/Cookies.binarycookies`)
 - Chrome: `~/Library/Application Support/Google/Chrome/<Profile>/Cookies`
+- Firefox: `~/Library/Application Support/Firefox/Profiles/<profile>/cookies.sqlite`
 
 ## Config (JSON5)
 
@@ -74,33 +144,103 @@ Example `~/.config/bird/config.json5`:
 
 ```json5
 {
-  engine: "graphql",
+  // Cookie source order for browser extraction (string or array)
+  cookieSource: ["firefox", "safari"],
   firefoxProfile: "default-release",
-  sweetisticsApiKey: "sweet-...",
+  cookieTimeoutMs: 30000,
-  allowFirefox: true,
+  timeoutMs: 20000,
-  allowChrome: false,
+  quoteDepth: 1
-  timeoutMs: 20000
 }
 ```
 
 Environment shortcuts:
-- `SWEETISTICS_API_KEY`, `SWEETISTICS_BASE_URL`
+- `BIRD_TIMEOUT_MS`
-- `BIRD_ENGINE`, `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/bookmarks/likes.
 - `read` returns full text for Notes and Articles when present.
+- Use `--plain` for stable, script-friendly output (no emoji, no color).
 
-## Media uploads (Sweetistics only)
+### 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 |
+
+## Query IDs (GraphQL)
+
+X rotates GraphQL “query IDs” frequently. Each GraphQL operation is addressed as:
+
+- `operationName` (e.g. `TweetDetail`, `CreateTweet`)
+- `queryId` (rotating ID baked into X’s web client bundles)
+
+`bird` ships with a baseline mapping in `src/lib/query-ids.json` (copied into `dist/` on build). At runtime,
+it can refresh that mapping by scraping X’s public web client bundles and caching the result on disk.
+
+Runtime cache:
+- Default path: `~/.config/bird/query-ids-cache.json`
+- Override path: `BIRD_QUERY_IDS_CACHE=/path/to/file.json`
+- TTL: 24h (stale cache is still used, but marked “not fresh”)
+
+Auto-recovery:
+- On GraphQL `404` (query ID invalid), `bird` forces a refresh once and retries.
+- For `TweetDetail`/`SearchTimeline`, `bird` also rotates through a small set of known fallback IDs to reduce
+  breakage while refreshing.
+
+Refresh on demand:
+
+```bash
+bird query-ids --fresh
+```
+
+Exit codes:
+- `0`: success
+- `1`: runtime error (network/auth/etc)
+- `2`: invalid usage/validation (e.g. bad `--user` handle)
+
+## Version
+
+`bird --version` prints `package.json` version plus current git sha when available, e.g. `0.3.0 (3df7969b)`.
+
+## Media uploads
 
 - Attach media with `--media` (repeatable) and optional `--alt` per item.
-- Up to 4 images, or 1 video (no mixing). Supported: jpg, jpeg, png, webp, gif, mp4, mov.
+- Up to 4 images/GIFs, or 1 video (no mixing). Supported: jpg, jpeg, png, webp, gif, mp4, mov.
+- Images/GIFs + 1 video supported (uploads via Twitter legacy upload endpoint + cookies; video may take longer to process).
 
 Example:
 
 ```bash
-bird --engine sweetistics tweet "hi" --media img.png --alt "desc"
+bird tweet "hi" --media img.png --alt "desc"
 ```
 
 ## Development
@@ -113,6 +253,7 @@ pnpm run build:dist  # dist/ only
 pnpm run build:binary
 
 pnpm run dev tweet "Test"
+pnpm run dev -- --plain check
 pnpm test
 pnpm run lint
 ```
@@ -120,4 +261,4 @@ pnpm run lint
 ## Notes
 
 - GraphQL uses internal X endpoints and can be rate limited (429).
-- Query IDs rotate; refresh them with `pnpm run graphql:update`.
+- Query IDs rotate; refresh at runtime with `bird query-ids --fresh` (or update the baked baseline via `pnpm run graphql:update`).

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/.nojekyll

@@ -0,0 +1 @@
+

docs/404.html

@@ -0,0 +1,43 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width,initial-scale=1" />
+    <meta name="color-scheme" content="dark" />
+    <meta name="theme-color" content="#0b0d10" />
+    <title>404 — bird.fast</title>
+    <link rel="icon" href="./favicon.svg" type="image/svg+xml" />
+    <link rel="preconnect" href="https://fonts.googleapis.com" />
+    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
+    <link
+      rel="stylesheet"
+      href="https://fonts.googleapis.com/css2?family=Fraunces:opsz,[email protected],500..900&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap"
+    />
+    <link rel="stylesheet" href="./assets/site.css" />
+  </head>
+  <body class="is-404">
+    <div class="bg" aria-hidden="true">
+      <div class="bg__orb bg__orb--a"></div>
+      <div class="bg__orb bg__orb--b"></div>
+      <div class="bg__grid"></div>
+      <div class="bg__noise"></div>
+    </div>
+
+    <main class="notfound">
+      <a class="brand brand--solo" href="./" aria-label="bird.fast home">
+        <span class="brand__mark" aria-hidden="true">
+          <img src="./assets/mark.svg" width="26" height="26" alt="" />
+        </span>
+        <span class="brand__word">bird</span>
+        <span class="brand__dot">.fast</span>
+      </a>
+      <h1 class="title title--small">404</h1>
+      <p class="lede lede--small">That path doesn’t exist. The CLI does.</p>
+      <div class="cta">
+        <a class="btn btn--hot" href="./">Go home</a>
+        <a class="btn btn--ghost" href="https://github.com/steipete/bird">Open GitHub</a>
+      </div>
+    </main>
+  </body>
+</html>
+

docs/CNAME

@@ -0,0 +1 @@
+bird.fast

docs/assets/mark.svg

@@ -0,0 +1,11 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 28 28" fill="none">
+  <path
+    d="M19.7 10.3c-.9-2.8-3.5-4.8-6.5-4.8-3.8 0-6.9 3.1-6.9 6.9 0 3.9 3.1 7 6.9 7 .9 0 1.8-.2 2.6-.5 1.8 1 3.8 1.2 5.8.6-2.3-.4-3.6-1.4-4.2-2.9 1.6-1.2 2.6-3.1 2.6-5.2 0-.3 0-.6-.1-.9h.9l2.5-2.1-3.6.1z"
+    fill="rgba(244,241,233,0.92)"
+  />
+  <path
+    d="M22.9 9.6l-1.7 1.4h-1.1c-.3-1-.9-1.9-1.6-2.7l4.4-.2z"
+    fill="rgba(183,255,106,0.88)"
+  />
+</svg>
+

docs/assets/site.css

@@ -0,0 +1,479 @@
+:root {
+  --bg: #0b0d10;
+  --fg: #f4f1e9;
+  --muted: rgba(244, 241, 233, 0.66);
+  --dim: rgba(244, 241, 233, 0.12);
+  --edge: rgba(244, 241, 233, 0.16);
+  --hot: #b7ff6a;
+  --hot2: #6afcff;
+  --ink: rgba(8, 9, 12, 0.72);
+
+  --serif: "Fraunces", ui-serif, "Iowan Old Style", "Apple Garamond", serif;
+  --sans: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, sans-serif;
+  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
+
+  --radius: 18px;
+  --shadow: 0 24px 80px rgba(0, 0, 0, 0.55);
+  --max: 1080px;
+}
+
+* { box-sizing: border-box; }
+html, body { height: 100%; }
+body {
+  margin: 0;
+  font-family: var(--sans);
+  color: var(--fg);
+  background: var(--bg);
+  overflow-x: hidden;
+}
+
+a { color: inherit; text-underline-offset: 4px; }
+a:hover { text-decoration-thickness: 2px; }
+
+.skip {
+  position: absolute;
+  left: 12px;
+  top: 12px;
+  padding: 10px 12px;
+  border-radius: 10px;
+  border: 1px solid var(--edge);
+  background: rgba(0, 0, 0, 0.7);
+  transform: translateY(-140%);
+  transition: transform 180ms ease;
+  z-index: 999;
+}
+.skip:focus { transform: translateY(0); outline: none; }
+
+.bg { position: fixed; inset: 0; pointer-events: none; z-index: 0; }
+.bg__orb {
+  position: absolute;
+  width: 900px;
+  height: 900px;
+  border-radius: 999px;
+  filter: blur(48px);
+  opacity: 0.55;
+  transform: translate3d(0, 0, 0);
+}
+.bg__orb--a {
+  left: -320px;
+  top: -280px;
+  background: radial-gradient(circle at 30% 30%, rgba(183, 255, 106, 0.95), rgba(183, 255, 106, 0.0) 62%);
+}
+.bg__orb--b {
+  right: -360px;
+  bottom: -320px;
+  background: radial-gradient(circle at 30% 30%, rgba(106, 252, 255, 0.95), rgba(106, 252, 255, 0.0) 62%);
+}
+.bg__grid {
+  position: absolute;
+  inset: 0;
+  background-image:
+    linear-gradient(to right, rgba(244, 241, 233, 0.06) 1px, transparent 1px),
+    linear-gradient(to bottom, rgba(244, 241, 233, 0.06) 1px, transparent 1px);
+  background-size: 64px 64px;
+  opacity: 0.22;
+  mask-image: radial-gradient(circle at 48% 25%, black 0%, black 45%, transparent 72%);
+}
+.bg__noise {
+  position: absolute;
+  inset: 0;
+  opacity: 0.09;
+  mix-blend-mode: overlay;
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+}
+
+.top { position: sticky; top: 0; z-index: 10; backdrop-filter: blur(14px); }
+.top__inner {
+  max-width: var(--max);
+  margin: 0 auto;
+  padding: 18px 18px;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+}
+.top::after {
+  content: "";
+  position: absolute;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  height: 1px;
+  background: linear-gradient(90deg, transparent, rgba(244, 241, 233, 0.16), transparent);
+}
+
+.brand {
+  display: inline-flex;
+  align-items: center;
+  gap: 10px;
+  text-decoration: none;
+}
+.brand__mark {
+  width: 28px;
+  height: 28px;
+  display: grid;
+  place-items: center;
+  border-radius: 10px;
+  border: 1px solid rgba(244, 241, 233, 0.18);
+  background: rgba(0, 0, 0, 0.18);
+  box-shadow: 0 10px 38px rgba(0, 0, 0, 0.38);
+}
+.brand__word {
+  font-family: var(--serif);
+  letter-spacing: -0.02em;
+  font-variation-settings: "opsz" 144;
+  font-weight: 780;
+  font-size: 18px;
+}
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+}
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+}
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+  background: linear-gradient(180deg, rgba(183, 255, 106, 0.10), rgba(0, 0, 0, 0.22));
+}
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+}
+
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+  z-index: 1;
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+}
+.bottom__inner { max-width: var(--max); margin: 0 auto; }
+
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+body.is-404 { display: grid; place-items: center; }
+.notfound { max-width: 640px; padding: 18px; text-align: left; }
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+  .nav { display: none; }
+}

docs/assets/site.js

@@ -0,0 +1,80 @@
+const by = (sel, root = document) => root.querySelector(sel);
+const all = (sel, root = document) => Array.from(root.querySelectorAll(sel));
+
+const demoSnippets = {
+  tweet: `bird tweet "ship it"`,
+  reply: `bird reply https://x.com/user/status/1234567890123456789 "same"`,
+  read: `bird read https://x.com/user/status/1234567890123456789`,
+  thread: `bird thread 1234567890123456789`,
+  search: `bird search "from:steipete" -n 5`,
+  mentions: `bird mentions -n 5`,
+};
+
+const setDemo = (key) => {
+  const code = by("#demoCode");
+  if (!code) return;
+  const value = demoSnippets[key] ?? demoSnippets.tweet;
+  code.textContent = value;
+};
+
+const wireTabs = () => {
+  const buttons = all("[data-cmd]");
+  if (buttons.length === 0) return;
+  buttons.forEach((b) => {
+    b.addEventListener("click", () => {
+      const key = b.getAttribute("data-cmd") ?? "tweet";
+      buttons.forEach((x) => {
+        const on = x === b;
+        x.classList.toggle("is-on", on);
+        x.setAttribute("aria-selected", on ? "true" : "false");
+      });
+      setDemo(key);
+    });
+  });
+};
+
+const wireCopy = () => {
+  all("[data-copy]").forEach((btn) => {
+    btn.addEventListener("click", async () => {
+      const sel = btn.getAttribute("data-copy");
+      if (!sel) return;
+      const node = by(sel);
+      if (!node) return;
+      const text = node.textContent ?? "";
+      try {
+        await navigator.clipboard.writeText(text);
+        btn.classList.add("is-done");
+        window.setTimeout(() => btn.classList.remove("is-done"), 900);
+      } catch {
+        // noop
+      }
+    });
+  });
+};
+
+const wireOrbs = () => {
+  const a = by(".bg__orb--a");
+  const b = by(".bg__orb--b");
+  if (!a || !b) return;
+
+  let raf = 0;
+  const onMove = (e) => {
+    if (raf) cancelAnimationFrame(raf);
+    raf = requestAnimationFrame(() => {
+      const x = e.clientX / window.innerWidth;
+      const y = e.clientY / window.innerHeight;
+      a.style.transform = `translate3d(${(x - 0.4) * 80}px, ${(y - 0.4) * 70}px, 0)`;
+      b.style.transform = `translate3d(${(x - 0.6) * 90}px, ${(y - 0.6) * 80}px, 0)`;
+    });
+  };
+
+  window.addEventListener("mousemove", onMove, { passive: true });
+};
+
+document.documentElement.classList.add("js");
+window.setTimeout(() => document.body.classList.add("is-ready"), 20);
+
+wireTabs();
+wireCopy();
+wireOrbs();
+

docs/favicon.svg

@@ -0,0 +1,15 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64">
+  <defs>
+    <linearGradient id="g" x1="0" x2="1" y1="0" y2="1">
+      <stop offset="0" stop-color="#b7ff6a" stop-opacity="0.95" />
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+  </defs>
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+  <rect x="5" y="5" width="54" height="54" rx="12" fill="rgba(255,255,255,0.06)" stroke="rgba(255,255,255,0.10)" />
+  <path
+    d="M46 24c-2.1-6.5-8.1-11-15.2-11C21.9 13 15 19.9 15 28.8 15 37.8 21.9 45 30.8 45c2.1 0 4.2-.4 6.1-1.2 4.1 2.2 8.8 2.7 13.4 1.3-5.4-.9-8.4-3.3-9.7-6.7 3.7-2.9 6-7.4 6-12.1 0-.7-.1-1.4-.2-2.1H48l6-5-8.4.1z"
+    fill="url(#g)"
+  />
+</svg>
+

docs/index.html

@@ -0,0 +1,232 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width,initial-scale=1" />
+    <meta name="color-scheme" content="dark" />
+    <meta name="theme-color" content="#0b0d10" />
+
+    <title>bird.fast — fast X CLI</title>
+    <meta
+      name="description"
+      content="bird is a fast X CLI for tweeting, replying, and reading via the X/Twitter GraphQL API (cookie auth)."
+    />
+
+    <link rel="canonical" href="https://bird.fast/" />
+    <link rel="icon" href="./favicon.svg" type="image/svg+xml" />
+
+    <meta property="og:title" content="bird.fast" />
+    <meta property="og:description" content="Fast X CLI for tweeting, replying, and reading." />
+    <meta property="og:type" content="website" />
+    <meta property="og:url" content="https://bird.fast/" />
+
+    <link rel="preconnect" href="https://fonts.googleapis.com" />
+    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
+    <link
+      rel="stylesheet"
+      href="https://fonts.googleapis.com/css2?family=Fraunces:opsz,[email protected],500..900&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap"
+    />
+
+    <link rel="stylesheet" href="./assets/site.css" />
+  </head>
+
+  <body>
+    <a class="skip" href="#content">Skip to content</a>
+
+    <div class="bg" aria-hidden="true">
+      <div class="bg__orb bg__orb--a"></div>
+      <div class="bg__orb bg__orb--b"></div>
+      <div class="bg__grid"></div>
+      <div class="bg__noise"></div>
+    </div>
+
+    <header class="top">
+      <div class="top__inner">
+        <a class="brand" href="./" aria-label="bird.fast home">
+          <span class="brand__mark" aria-hidden="true">
+            <img src="./assets/mark.svg" width="26" height="26" alt="" />
+          </span>
+          <span class="brand__word">bird</span>
+          <span class="brand__dot">.fast</span>
+        </a>
+
+        <nav class="nav">
+          <a class="nav__link" href="#install">Install</a>
+          <a class="nav__link" href="#commands">Commands</a>
+          <a class="nav__link" href="https://github.com/steipete/bird">GitHub</a>
+        </nav>
+      </div>
+    </header>
+
+    <main id="content">
+      <section class="hero">
+        <div class="hero__inner">
+          <p class="kicker" data-reveal>Fast X CLI. Cookie auth. Zero fuss.</p>
+
+          <h1 class="title" data-reveal>
+            <span class="title__big">bird</span><span class="title__dot">.fast</span>
+          </h1>
+
+          <p class="lede" data-reveal>
+            Tweet, reply, read threads, search, mentions — powered by X/Twitter GraphQL and your existing
+            browser session.
+          </p>
+
+          <div class="cta" data-reveal>
+            <a class="btn btn--hot" href="#install">Install</a>
+            <a class="btn btn--ghost" href="https://github.com/steipete/bird#quickstart">Quickstart</a>
+          </div>
+
+          <div class="terminal" data-reveal>
+            <div class="terminal__bar">
+              <span class="terminal__dots" aria-hidden="true">
+                <i></i><i></i><i></i>
+              </span>
+              <span class="terminal__label">copy &amp; run</span>
+            </div>
+            <div class="terminal__body">
+              <pre><code id="installCmd">npm install -g @steipete/bird
+
+bird whoami
+bird tweet "hi from bird.fast"</code></pre>
+              <button class="copy" type="button" data-copy="#installCmd">
+                <span class="copy__idle">Copy</span>
+                <span class="copy__done" aria-hidden="true">Copied</span>
+              </button>
+            </div>
+          </div>
+
+          <div class="badges" data-reveal>
+            <a class="badge" href="https://www.npmjs.com/package/@steipete/bird">
+              <span class="badge__k">npm</span>
+              <span class="badge__v">@steipete/bird</span>
+            </a>
+            <a class="badge" href="https://github.com/steipete/bird">
+              <span class="badge__k">repo</span>
+              <span class="badge__v">steipete/bird</span>
+            </a>
+            <a class="badge" href="https://github.com/steipete/bird#authentication-graphql">
+              <span class="badge__k">auth</span>
+              <span class="badge__v">cookies</span>
+            </a>
+          </div>
+        </div>
+      </section>
+
+      <section class="stripe" id="install">
+        <div class="stripe__inner">
+          <h2 class="h2">Install</h2>
+          <div class="cards">
+            <article class="card">
+              <h3 class="h3">npm / pnpm / bun</h3>
+              <p class="p">Pick your poison. Node ≥ 20.</p>
+              <pre class="code"><code>npm install -g @steipete/bird
+pnpm add -g @steipete/bird
+bun add -g @steipete/bird</code></pre>
+            </article>
+            <article class="card">
+              <h3 class="h3">One-shot</h3>
+              <p class="p">No install. Just prove it works.</p>
+              <pre class="code"><code>bunx @steipete/bird whoami</code></pre>
+            </article>
+            <article class="card">
+              <h3 class="h3">Homebrew (macOS)</h3>
+              <p class="p">Prebuilt Bun binary.</p>
+              <pre class="code"><code>brew install steipete/tap/bird</code></pre>
+            </article>
+          </div>
+        </div>
+      </section>
+
+      <section class="stripe stripe--tight" id="commands">
+        <div class="stripe__inner">
+          <h2 class="h2">Commands</h2>
+          <p class="p p--muted">Everything you need for a fast “read → reply → move on” loop.</p>
+
+          <div class="cmds" role="tablist" aria-label="bird commands">
+            <button class="cmd is-on" type="button" data-cmd="tweet" role="tab" aria-selected="true">
+              tweet
+            </button>
+            <button class="cmd" type="button" data-cmd="reply" role="tab" aria-selected="false">reply</button>
+            <button class="cmd" type="button" data-cmd="read" role="tab" aria-selected="false">read</button>
+            <button class="cmd" type="button" data-cmd="thread" role="tab" aria-selected="false">thread</button>
+            <button class="cmd" type="button" data-cmd="search" role="tab" aria-selected="false">search</button>
+            <button class="cmd" type="button" data-cmd="mentions" role="tab" aria-selected="false">
+              mentions
+            </button>
+          </div>
+
+          <div class="demo" aria-live="polite">
+            <pre class="demo__pre"><code id="demoCode">bird tweet "ship it"</code></pre>
+            <button class="copy copy--demo" type="button" data-copy="#demoCode">
+              <span class="copy__idle">Copy</span>
+              <span class="copy__done" aria-hidden="true">Copied</span>
+            </button>
+          </div>
+        </div>
+      </section>
+
+      <section class="stripe stripe--end">
+        <div class="stripe__inner">
+          <h2 class="h2">How it works</h2>
+          <div class="steps">
+            <article class="step">
+              <div class="step__num">01</div>
+              <h3 class="h3">Use your existing session</h3>
+              <p class="p p--muted">
+                Cookie auth. No password prompt. Reads from Safari/Chrome/Firefox (configurable).
+              </p>
+            </article>
+            <article class="step">
+              <div class="step__num">02</div>
+              <h3 class="h3">GraphQL first</h3>
+              <p class="p p--muted">
+                Talks to X’s internal endpoints. Query IDs rotate — bird auto-refreshes and caches them.
+              </p>
+            </article>
+            <article class="step">
+              <div class="step__num">03</div>
+              <h3 class="h3">Fast, scriptable output</h3>
+              <p class="p p--muted">
+                Human output by default. Flip to <span class="pill">--json</span> or
+                <span class="pill">--plain</span> when you need stability.
+              </p>
+            </article>
+          </div>
+
+          <aside class="notice notice--warn" role="note" aria-label="Disclaimer">
+            <div class="notice__icon" aria-hidden="true">!</div>
+            <div class="notice__body">
+              <p class="notice__title">Undocumented API.</p>
+              <p class="notice__text">
+                bird uses X/Twitter’s private web GraphQL endpoints and rotating query IDs. X can change things anytime —
+                expect breakage without notice.
+              </p>
+            </div>
+          </aside>
+
+          <div class="footerline">
+            <a class="tiny" href="https://github.com/steipete/bird#authentication-graphql">
+              Authentication details
+            </a>
+            <span class="sep" aria-hidden="true">•</span>
+            <a class="tiny" href="https://github.com/steipete/bird#config-json5">Config (JSON5)</a>
+            <span class="sep" aria-hidden="true">•</span>
+            <a class="tiny" href="https://github.com/steipete/bird/issues">Issues</a>
+          </div>
+        </div>
+      </section>
+    </main>
+
+    <footer class="bottom">
+      <div class="bottom__inner">
+        <p class="tiny">
+          Made by <a href="https://steipete.me">Peter</a>. MIT licensed. Built for GitHub Pages.
+        </p>
+        <p class="tiny tiny--muted">bird.fast is the landing page; the project lives on GitHub.</p>
+      </div>
+    </footer>
+
+    <script src="./assets/site.js" type="module"></script>
+  </body>
+</html>

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`
+   - From repo root: `tar -czf bird-macos-universal-v<version>.tar.gz bird`
-   - Compute SHA: `shasum -a 256 bird-macos-universal-v0.1.0.tar.gz`
+   - 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`
@@ -53,4 +56,4 @@ If you want a single-file binary for Homebrew/GitHub assets:
 ## Notes
 - Scoped npm name (`@steipete/bird`) requires `--access public` on first publish.
 - Homebrew formula assumes macOS universal binary; adjust URL/name if you ship per-arch.
-- Config defaults (JSON5) and Firefox/Chrome cookie selection are documented in `README.md` — keep that in sync for each release.
+- Config defaults (JSON5) and Safari/Chrome/Firefox cookie selection are documented in `README.md` — keep that in sync for each release.

docs/testing.md

@@ -0,0 +1,28 @@
+# 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`
+
+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`.
+- 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

@@ -1,29 +1,41 @@
 {
   "name": "@steipete/bird",
-  "version": "0.1.0",
+  "version": "0.5.1",
   "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",
+    "README.md",
+    "CHANGELOG.md",
+    "LICENSE"
+  ],
   "scripts": {
     "build": "pnpm run build:dist && pnpm run build:binary",
-    "build:dist": "tsc",
+    "build:dist": "tsc && node scripts/copy-dist-assets.js",
-    "build:binary": "bun build --compile --minify 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 .",
+    "test:live": "pnpm run build:dist && BIRD_LIVE=1 vitest run --no-file-parallelism tests/live/live.test.ts",
-    "lint:fix": "biome check --write .",
+    "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",
-    "devalue": "^5.6.1",
     "json5": "^2.2.3",
     "kleur": "^4.1.5"
   },
@@ -31,11 +43,13 @@
     "@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 +1,13 @@
+diff --git a/dist/providers/chromeSqliteMac.js b/dist/providers/chromeSqliteMac.js
+index 71c815f77378d03e07061976ac372b3a55a61ac4..3a85a2fce102128d7e7b69145d97bc353f663008 100644
+--- a/dist/providers/chromeSqliteMac.js
++++ b/dist/providers/chromeSqliteMac.js
+@@ -15,7 +15,7 @@ export async function getCookiesFromChromeSqliteMac(options, origins, allowlistN
+     const passwordResult = await readKeychainGenericPasswordFirst({
+         account: 'Chrome',
+         services: ['Chrome Safe Storage'],
+-        timeoutMs: 3_000,
++        timeoutMs: options.timeoutMs ?? 3_000,
+         label: 'Chrome Safe Storage',
+     });
+     if (!passwordResult.ok) {

pnpm-lock.yaml

@@ -1,19 +1,24 @@
 lockfileVersion: '9.0'
 
 settings:
-  autoInstallPeers: true
+  autoInstallPeers: false
   excludeLinksFromLockfile: false
 
+patchedDependencies:
+  '@steipete/sweet-cookie':
+    hash: 05180a0fa74ba5074775f965db7d4561e59ba51978bd5e955c0e4f058a4ed340
+    path: patches/@steipete__sweet-cookie.patch
+
 importers:
 
   .:
     dependencies:
+      '@steipete/sweet-cookie':
+        specifier: 0.1.0
+        version: 0.1.0(patch_hash=05180a0fa74ba5074775f965db7d4561e59ba51978bd5e955c0e4f058a4ed340)
       commander:
         specifier: ^14.0.2
         version: 14.0.2
-      devalue:
-        specifier: ^5.6.1
-        version: 5.6.1
       json5:
         specifier: ^2.2.3
         version: 2.2.3
@@ -30,6 +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
@@ -282,6 +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]
@@ -395,6 +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==}
 
@@ -469,9 +554,6 @@ packages:
       supports-color:
         optional: true
 
-  [email protected]:
-    resolution: {integrity: sha512-jDwizj+IlEZBunHcOuuFVBnIMPAEHvTsJj0BcIp94xYguLRVBcXO853px/MyIJvbVzWdsGvrRweIUWJw8hBP7A==}
-
   [email protected]:
     resolution: {integrity: sha512-jEQoCwk8hyb2AZziIOLhDqpm5+2ww5uIE6lkO/6jcOCusfk6LhMHpXXfBLXTZ7Ydyt0j4VoUQv6uGNYbdW+kBA==}
 
@@ -560,6 +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==}
 
@@ -850,6 +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
 
@@ -918,6 +1056,8 @@ snapshots:
 
   '@standard-schema/[email protected]': {}
 
+  '@steipete/[email protected](patch_hash=05180a0fa74ba5074775f965db7d4561e59ba51978bd5e955c0e4f058a4ed340)': {}
+
   '@types/[email protected]':
     dependencies:
       '@types/deep-eql': 4.0.2
@@ -1003,8 +1143,6 @@ snapshots:
     dependencies:
       ms: 2.1.3
 
-  [email protected]: {}
-
   [email protected]: {}
 
   [email protected]:
@@ -1104,6 +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]: {}

pnpm-workspace.yaml

@@ -1,2 +1,5 @@
 onlyBuiltDependencies:
   - esbuild
+
+patchedDependencies:
+  '@steipete/sweet-cookie': patches/@steipete__sweet-cookie.patch

scripts/copy-dist-assets.js

@@ -0,0 +1,16 @@
+import { mkdirSync, readFileSync, writeFileSync } from 'node:fs';
+import { dirname, resolve } from 'node:path';
+
+const root = resolve(import.meta.dirname, '..');
+const files = [
+  {
+    from: resolve(root, 'src/lib/query-ids.json'),
+    to: resolve(root, 'dist/lib/query-ids.json'),
+  },
+];
+
+for (const file of files) {
+  mkdirSync(dirname(file.to), { recursive: true });
+  writeFileSync(file.to, readFileSync(file.from));
+}
+

scripts/update-query-ids.ts

@@ -1,7 +1,7 @@
 #!/usr/bin/env tsx
 /**
  * Fetches current Twitter/X GraphQL query IDs from public client bundles and
- * updates src/lib/query-ids.json. Inspired by Sweetistics' extractor.
+ * updates src/lib/query-ids.json.
  */
 
 import fs from 'node:fs/promises';
@@ -13,6 +13,11 @@ const TARGET_OPERATIONS = [
   'FavoriteTweet',
   'TweetDetail',
   'SearchTimeline',
+  'Bookmarks',
+  'BookmarkFolderTimeline',
+  'Following',
+  'Followers',
+  'Likes',
 ] as const;
 
 type OperationName = (typeof TARGET_OPERATIONS)[number];
@@ -28,6 +33,18 @@ const BUNDLE_URL_REGEX =
   /https:\/\/abs\.twimg\.com\/responsive-web\/client-web(?:-legacy)?\/[A-Za-z0-9.-]+\.js/g;
 
 const OPERATION_PATTERNS = [
+  // Modern bundles export operations like:
+  //   e.exports={queryId:"...",operationName:"CreateTweet",operationType:"mutation",...}
+  {
+    regex: /e\.exports=\{queryId\s*:\s*["']([^"']+)["']\s*,\s*operationName\s*:\s*["']([^"']+)["']/gs,
+    operationGroup: 2,
+    queryIdGroup: 1,
+  },
+  {
+    regex: /e\.exports=\{operationName\s*:\s*["']([^"']+)["']\s*,\s*queryId\s*:\s*["']([^"']+)["']/gs,
+    operationGroup: 1,
+    queryIdGroup: 2,
+  },
   {
     regex: /operationName\s*[:=]\s*["']([^"']+)["'](.{0,4000}?)queryId\s*[:=]\s*["']([^"']+)["']/gs,
     operationGroup: 1,

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/program.ts

@@ -0,0 +1,129 @@
+import { Command } from 'commander';
+import { registerBookmarksCommand } from '../commands/bookmarks.js';
+import { registerCheckCommand } from '../commands/check.js';
+import { registerHelpCommand } from '../commands/help.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 { 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',
+  'following',
+  'followers',
+  'likes',
+  '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 ${ctx.colors.option('--json')} to: read, replies, thread, search, mentions, bookmarks, likes, following, followers, query-ids`,
+      )}\n${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);
+  registerUserCommands(program, ctx);
+  registerCheckCommand(program, ctx);
+
+  return program;
+}

src/cli/shared.ts

@@ -0,0 +1,348 @@
+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 {
+  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;
+  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 ${path}. Supported: jpg, jpeg, png, webp, gif, mp4, mov`);
+      }
+      const buffer = readFileSync(path);
+      specs.push({ path, mime, buffer, alt: opts.alts[index] });
+    }
+
+    const videoCount = specs.filter((m) => m.mime.startsWith('video/')).length;
+    if (videoCount > 1) {
+      throw new Error('Only one video can be attached');
+    }
+    if (videoCount === 1 && specs.length > 1) {
+      throw new Error('Video cannot be combined with other media');
+    }
+    if (specs.length > 4) {
+      throw new Error('Maximum 4 media attachments');
+    }
+    return specs;
+  }
+
+  function printTweets(
+    tweets: TweetData[],
+    opts: { json?: boolean; emptyMessage?: string; showSeparator?: boolean } = {},
+  ) {
+    if (opts.json) {
+      console.log(JSON.stringify(tweets, null, 2));
+      return;
+    }
+    if (tweets.length === 0) {
+      console.log(opts.emptyMessage ?? 'No tweets found.');
+      return;
+    }
+    for (const tweet of tweets) {
+      console.log(`\n@${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));
+      }
+    }
+  }
+
+  return {
+    isTty,
+    getOutput: () => output,
+    colors,
+    p,
+    l,
+    config,
+    applyOutputFromCommand,
+    resolveTimeoutFromOptions,
+    resolveQuoteDepthFromOptions,
+    resolveCredentialsFromOptions,
+    loadMedia,
+    printTweets,
+    extractTweetId,
+  };
+}

src/commands/bookmarks.ts

@@ -0,0 +1,47 @@
+import type { Command } from 'commander';
+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('--json', 'Output as JSON')
+    .action(async (cmdOpts: { count?: string; json?: boolean; folderId?: string }) => {
+      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(`${ctx.p('err')}Missing required credentials`);
+        process.exit(1);
+      }
+
+      const client = new TwitterClient({ cookies, timeoutMs });
+      const folderId = cmdOpts.folderId ? extractBookmarkFolderId(cmdOpts.folderId) : null;
+      if (cmdOpts.folderId && !folderId) {
+        console.error(`${ctx.p('err')}Invalid --folder-id. Expected numeric ID or https://x.com/i/bookmarks/<id>.`);
+        process.exit(1);
+      }
+      const result = folderId
+        ? await client.getBookmarkFolderTimeline(folderId, count)
+        : await client.getBookmarks(count);
+
+      if (result.success && result.tweets) {
+        const emptyMessage = folderId ? 'No bookmarks found in folder.' : 'No bookmarks found.';
+        ctx.printTweets(result.tweets, { json: cmdOpts.json, 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/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 +1,66 @@
+import type { Command } from 'commander';
+import type { CliContext } from '../cli/shared.js';
+import { runtimeQueryIds } from '../lib/runtime-query-ids.js';
+
+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(`${ctx.p('info')}Refreshing GraphQL query IDs…`);
+        await runtimeQueryIds.refresh(operations, { force: true });
+      }
+
+      const info = await runtimeQueryIds.getSnapshotInfo();
+      if (!info) {
+        if (cmdOpts.json) {
+          console.log(JSON.stringify({ cached: false, cachePath: runtimeQueryIds.cachePath }, null, 2));
+          return;
+        }
+        console.log(`${ctx.p('warn')}No cached query IDs yet.`);
+        console.log(`${ctx.p('info')}Run: bird query-ids --fresh`);
+        return;
+      }
+
+      if (cmdOpts.json) {
+        console.log(
+          JSON.stringify(
+            {
+              cached: true,
+              cachePath: info.cachePath,
+              fetchedAt: info.snapshot.fetchedAt,
+              isFresh: info.isFresh,
+              ageMs: info.ageMs,
+              ids: info.snapshot.ids,
+              discovery: info.snapshot.discovery,
+            },
+            null,
+            2,
+          ),
+        );
+        return;
+      }
+
+      console.log(`${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}`);
+    });
+}

src/commands/read.ts

@@ -0,0 +1,115 @@
+import type { Command } from 'commander';
+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')
+    .action(async (tweetIdOrUrl: string, cmdOpts: { json?: 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(`${ctx.p('err')}Missing required credentials`);
+        process.exit(1);
+      }
+
+      const client = new TwitterClient({ cookies, timeoutMs, quoteDepth });
+      const result = await client.getTweet(tweetId);
+
+      if (result.success && result.tweet) {
+        if (cmdOpts.json) {
+          console.log(JSON.stringify(result.tweet, null, 2));
+        } else {
+          console.log(`@${result.tweet.author.username} (${result.tweet.author.name}):`);
+          console.log(result.tweet.text);
+          if (result.tweet.createdAt) {
+            console.log(`\n${ctx.l('date')}${result.tweet.createdAt}`);
+          }
+          console.log(formatStatsLine(result.tweet, ctx.getOutput()));
+        }
+      } else {
+        console.error(`${ctx.p('err')}Failed to read tweet: ${result.error}`);
+        process.exit(1);
+      }
+    });
+
+  program
+    .command('replies')
+    .description('List replies to a tweet (by ID or URL)')
+    .argument('<tweet-id-or-url>', 'Tweet ID or URL')
+    .option('--json', 'Output as JSON')
+    .action(async (tweetIdOrUrl: string, cmdOpts: { json?: boolean }) => {
+      const opts = program.opts();
+      const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+      const quoteDepth = ctx.resolveQuoteDepthFromOptions(opts);
+      const tweetId = ctx.extractTweetId(tweetIdOrUrl);
+
+      const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+      for (const warning of warnings) {
+        console.error(`${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 result = await client.getReplies(tweetId);
+
+      if (result.success && result.tweets) {
+        ctx.printTweets(result.tweets, { json: cmdOpts.json, emptyMessage: 'No replies found.' });
+      } else {
+        console.error(`${ctx.p('err')}Failed to fetch replies: ${result.error}`);
+        process.exit(1);
+      }
+    });
+
+  program
+    .command('thread')
+    .description('Show the full conversation thread containing the tweet')
+    .argument('<tweet-id-or-url>', 'Tweet ID or URL')
+    .option('--json', 'Output as JSON')
+    .action(async (tweetIdOrUrl: string, cmdOpts: { json?: boolean }) => {
+      const opts = program.opts();
+      const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+      const quoteDepth = ctx.resolveQuoteDepthFromOptions(opts);
+      const tweetId = ctx.extractTweetId(tweetIdOrUrl);
+
+      const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+      for (const warning of warnings) {
+        console.error(`${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 result = await client.getThread(tweetId);
+
+      if (result.success && result.tweets) {
+        ctx.printTweets(result.tweets, { json: cmdOpts.json, emptyMessage: 'No thread tweets found.' });
+      } else {
+        console.error(`${ctx.p('err')}Failed to fetch thread: ${result.error}`);
+        process.exit(1);
+      }
+    });
+}

src/commands/search.ts

@@ -0,0 +1,96 @@
+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('--json', 'Output as JSON')
+    .action(async (query: string, cmdOpts: { count?: string; json?: boolean }) => {
+      const opts = program.opts();
+      const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+      const quoteDepth = ctx.resolveQuoteDepthFromOptions(opts);
+      const count = Number.parseInt(cmdOpts.count || '10', 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(`${ctx.p('err')}Missing required credentials`);
+        process.exit(1);
+      }
+
+      const client = new TwitterClient({ cookies, timeoutMs, quoteDepth });
+      const result = await client.search(query, count);
+
+      if (result.success && result.tweets) {
+        ctx.printTweets(result.tweets, { json: cmdOpts.json, emptyMessage: 'No tweets found.' });
+      } else {
+        console.error(`${ctx.p('err')}Search failed: ${result.error}`);
+        process.exit(1);
+      }
+    });
+
+  program
+    .command('mentions')
+    .description('Find tweets mentioning a user (defaults to current user)')
+    .option('-u, --user <handle>', 'User handle (e.g. @steipete)')
+    .option('-n, --count <number>', 'Number of tweets to fetch', '10')
+    .option('--json', 'Output as JSON')
+    .action(async (cmdOpts: { user?: string; count?: string; json?: boolean }) => {
+      const opts = program.opts();
+      const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+      const quoteDepth = ctx.resolveQuoteDepthFromOptions(opts);
+      const count = Number.parseInt(cmdOpts.count || '10', 10);
+
+      const fromUserOpt = mentionsQueryFromUserOption(cmdOpts.user);
+      if (fromUserOpt.error) {
+        console.error(`${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 (${who.error ?? 'Unknown error'}). Use --user <handle>.`,
+          );
+          process.exit(1);
+        }
+      }
+
+      const result = await client.search(query, count);
+
+      if (result.success && result.tweets) {
+        ctx.printTweets(result.tweets, { json: cmdOpts.json, emptyMessage: 'No mentions found.' });
+      } else {
+        console.error(`${ctx.p('err')}Failed to fetch mentions: ${result.error}`);
+        process.exit(1);
+      }
+    });
+}

src/commands/users.ts

@@ -0,0 +1,199 @@
+import type { Command } from 'commander';
+import type { CliContext } from '../cli/shared.js';
+import { TwitterClient } from '../lib/twitter-client.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', '20')
+    .option('--json', 'Output as JSON')
+    .action(async (cmdOpts: { user?: string; count?: string; json?: 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(`${ctx.p('err')}Missing required credentials`);
+        process.exit(1);
+      }
+
+      const client = new TwitterClient({ cookies, timeoutMs });
+
+      let userId = cmdOpts.user;
+      if (!userId) {
+        const currentUser = await client.getCurrentUser();
+        if (!currentUser.success || !currentUser.user?.id) {
+          console.error(`${ctx.p('err')}Failed to get current user: ${currentUser.error || 'Unknown error'}`);
+          process.exit(1);
+        }
+        userId = currentUser.user.id;
+      }
+
+      const result = await client.getFollowing(userId, count);
+
+      if (result.success && result.users) {
+        if (cmdOpts.json) {
+          console.log(JSON.stringify(result.users, null, 2));
+        } else {
+          if (result.users.length === 0) {
+            console.log('No users found.');
+          } else {
+            for (const user of result.users) {
+              console.log(`@${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('──────────────────────────────────────────────────');
+            }
+          }
+        }
+      } else {
+        console.error(`${ctx.p('err')}Failed to fetch following: ${result.error}`);
+        process.exit(1);
+      }
+    });
+
+  program
+    .command('followers')
+    .description('Get users that follow you (or another user)')
+    .option('--user <userId>', 'User ID to get followers for (defaults to current user)')
+    .option('-n, --count <number>', 'Number of users to fetch', '20')
+    .option('--json', 'Output as JSON')
+    .action(async (cmdOpts: { user?: string; count?: string; json?: boolean }) => {
+      const opts = program.opts();
+      const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+      const count = Number.parseInt(cmdOpts.count || '20', 10);
+
+      const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+      for (const warning of warnings) {
+        console.error(`${ctx.p('warn')}${warning}`);
+      }
+
+      if (!cookies.authToken || !cookies.ct0) {
+        console.error(`${ctx.p('err')}Missing required credentials`);
+        process.exit(1);
+      }
+
+      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: ${currentUser.error || 'Unknown error'}`);
+          process.exit(1);
+        }
+        userId = currentUser.user.id;
+      }
+
+      const result = await client.getFollowers(userId, count);
+
+      if (result.success && result.users) {
+        if (cmdOpts.json) {
+          console.log(JSON.stringify(result.users, null, 2));
+        } else {
+          if (result.users.length === 0) {
+            console.log('No users found.');
+          } else {
+            for (const user of result.users) {
+              console.log(`@${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('──────────────────────────────────────────────────');
+            }
+          }
+        }
+      } else {
+        console.error(`${ctx.p('err')}Failed to fetch followers: ${result.error}`);
+        process.exit(1);
+      }
+    });
+
+  program
+    .command('likes')
+    .description('Get your liked tweets')
+    .option('-n, --count <number>', 'Number of likes to fetch', '20')
+    .option('--json', 'Output as JSON')
+    .action(async (cmdOpts: { count?: string; json?: boolean }) => {
+      const opts = program.opts();
+      const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+      const quoteDepth = ctx.resolveQuoteDepthFromOptions(opts);
+      const count = Number.parseInt(cmdOpts.count || '20', 10);
+
+      const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+      for (const warning of warnings) {
+        console.error(`${ctx.p('warn')}${warning}`);
+      }
+
+      if (!cookies.authToken || !cookies.ct0) {
+        console.error(`${ctx.p('err')}Missing required credentials`);
+        process.exit(1);
+      }
+
+      const client = new TwitterClient({ cookies, timeoutMs, quoteDepth });
+      const result = await client.getLikes(count);
+
+      if (result.success && result.tweets) {
+        ctx.printTweets(result.tweets, { json: cmdOpts.json, 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/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

@@ -1,17 +1,14 @@
 /**
- * Chrome cookie extraction for Twitter authentication
+ * Browser cookie extraction for Twitter authentication.
- * Uses macOS sqlite3 CLI and keychain for decryption - no native dependencies!
+ * Delegates to @steipete/sweet-cookie for Safari/Chrome/Firefox reads.
  */
 
-import { execSync } from 'node:child_process';
+import { getCookies } from '@steipete/sweet-cookie';
-import { createDecipheriv, pbkdf2Sync } from 'node:crypto';
-import { copyFileSync, existsSync, mkdtempSync, readdirSync, rmSync } from 'node:fs';
-import { tmpdir } from 'node:os';
-import { join } from 'node:path';
 
 export interface TwitterCookies {
   authToken: string | null;
   ct0: string | null;
+  cookieHeader: string | null;
   source: string | null;
 }
 
@@ -20,367 +17,218 @@ export interface CookieExtractionResult {
   warnings: string[];
 }
 
+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 preferred = matches.find((c) => (c.domain ?? '').endsWith('x.com'));
-  const home = process.env.HOME || '';
+  if (preferred?.value) {
-  const profileDir = profile || 'Default';
+    return preferred.value;
-  return join(home, 'Library', 'Application Support', 'Google', 'Chrome', profileDir, 'Cookies');
   }
 
-function getFirefoxProfilesRoot(): string | null {
+  const twitter = matches.find((c) => (c.domain ?? '').endsWith('twitter.com'));
-  const home = process.env.HOME || '';
+  if (twitter?.value) {
-  if (process.platform === 'darwin') {
+    return twitter.value;
-    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 {
+  return matches[0]?.value ?? null;
-  if (profile) {
-    const candidate = join(profilesRoot, profile, 'cookies.sqlite');
-    return existsSync(candidate) ? candidate : null;
 }
 
-  const entries = readdirSync(profilesRoot, { withFileTypes: true });
+async function readTwitterCookiesFromBrowser(options: {
-  const defaultRelease = entries.find((entry) => entry.isDirectory() && entry.name.includes('default-release'));
+  source: CookieSource;
-  const targetDir = defaultRelease?.name ?? entries.find((e) => e.isDirectory())?.name;
+  chromeProfile?: string;
-  if (!targetDir) return null;
+  firefoxProfile?: string;
-
+  cookieTimeoutMs?: number;
-  const candidate = join(profilesRoot, targetDir, 'cookies.sqlite');
+}): Promise<CookieExtractionResult> {
-  return existsSync(candidate) ? candidate : null;
-}
-
-function getFirefoxCookiesPath(profile?: string): string | null {
-  const profilesRoot = getFirefoxProfilesRoot();
-  if (!profilesRoot || !existsSync(profilesRoot)) return null;
-  return pickFirefoxProfile(profilesRoot, profile);
-}
-
-/**
- * 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 = {
+  const out = buildEmpty();
-    authToken: null,
-    ct0: null,
-    source: null,
-  };
 
-  const cookiesPath = getChromeCookiesPath(profile);
+  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);
 
-  if (!existsSync(cookiesPath)) {
+  const authToken = pickCookieValue(cookies, 'auth_token');
-    warnings.push(`Chrome cookies database not found at: ${cookiesPath}`);
+  const ct0 = pickCookieValue(cookies, 'ct0');
-    return { cookies, warnings };
+  if (authToken) {
+    out.authToken = authToken;
+  }
+  if (ct0) {
+    out.ct0 = ct0;
   }
 
-  // Chrome locks the database, so we need to copy it
+  if (out.authToken && out.ct0) {
-  let tempDir: string | null = null;
+    out.cookieHeader = cookieHeader(out.authToken, out.ct0);
-
+    out.source = labelForSource(
-  try {
+      options.source,
-    tempDir = mkdtempSync(join(tmpdir(), 'twitter-cli-'));
+      options.source === 'chrome' ? options.chromeProfile : options.firefoxProfile,
-    const tempDbPath = join(tempDir, 'Cookies');
+    );
-    copyFileSync(cookiesPath, tempDbPath);
+    return { cookies: out, warnings };
-
-    // 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`);
   }
 
-    // Use sqlite3 CLI to query cookies (no native deps required!)
+  if (options.source === 'safari') {
-    const query = `SELECT name, hex(encrypted_value) as encrypted_hex FROM cookies WHERE host_key IN ('.x.com', '.twitter.com', 'x.com', 'twitter.com') AND name IN ('auth_token', 'ct0');`;
+    warnings.push('No Twitter cookies found in Safari. Make sure you are logged into x.com in Safari.');
-
+  } else if (options.source === 'chrome') {
-    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) {
-          if (name === 'auth_token' && !cookies.authToken) {
-            cookies.authToken = decryptedValue;
-          } else if (name === 'ct0' && !cookies.ct0) {
-            cookies.ct0 = decryptedValue;
-          }
-        }
-      }
-    }
-
-    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: ${message}`);
-  } finally {
-    // Cleanup temp files
-    if (tempDir) {
-      try {
-        rmSync(tempDir, { recursive: true, force: true });
-      } catch {
-        // Ignore cleanup errors
-      }
-    }
-  }
-
-  if (!cookies.authToken && !cookies.ct0) {
     warnings.push('No Twitter cookies found in Chrome. Make sure you are logged into x.com in Chrome.');
-  }
+  } else {
-
-  return { cookies, warnings };
-}
-
-/**
- * Extract Twitter cookies from Firefox browser using sqlite3 CLI
- * @param profile - Firefox profile directory name (optional, auto-detected)
- */
-export async function extractCookiesFromFirefox(profile?: string): Promise<CookieExtractionResult> {
-  const warnings: string[] = [];
-  const cookies: TwitterCookies = {
-    authToken: null,
-    ct0: null,
-    source: null,
-  };
-
-  const cookiesPath = getFirefoxCookiesPath(profile);
-
-  if (!cookiesPath) {
-    warnings.push('Firefox cookies database not found.');
-    return { cookies, warnings };
-  }
-
-  let tempDir: string | null = null;
-
-  try {
-    tempDir = mkdtempSync(join(tmpdir(), 'twitter-cli-'));
-    const tempDbPath = join(tempDir, 'cookies.sqlite');
-    copyFileSync(cookiesPath, tempDbPath);
-
-    const query = `SELECT name, value FROM moz_cookies WHERE host IN ('.x.com', '.twitter.com', 'x.com', 'twitter.com') AND name IN ('auth_token', 'ct0');`;
-
-    const result = execSync(`sqlite3 -separator '|' "${tempDbPath}" "${query}"`, {
-      encoding: 'utf8',
-      maxBuffer: 1024 * 1024,
-    }).trim();
-
-    if (result) {
-      for (const line of result.split('\n')) {
-        const [name, value] = line.split('|');
-        if (!name || !value) continue;
-        if (name === 'auth_token' && !cookies.authToken) {
-          cookies.authToken = value;
-        } else if (name === 'ct0' && !cookies.ct0) {
-          cookies.ct0 = value;
-        }
-      }
-    }
-
-    if (cookies.authToken || cookies.ct0) {
-      cookies.source = profile ? `Firefox profile "${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) {
     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
+ * Resolve Twitter credentials from multiple sources.
- * Priority: CLI args > environment variables > Chrome cookies
+ * Priority: CLI args > environment variables > browsers (ordered).
  */
 export async function resolveCredentials(options: {
   authToken?: string;
   ct0?: string;
+  cookieSource?: CookieSource | CookieSource[];
   chromeProfile?: string;
   firefoxProfile?: string;
-  allowChrome?: boolean;
+  cookieTimeoutMs?: number;
-  allowFirefox?: boolean;
 }): Promise<CookieExtractionResult> {
   const warnings: string[] = [];
-  const cookies: TwitterCookies = {
+  const cookies = buildEmpty();
-    authToken: null,
+  const cookieTimeoutMs =
-    ct0: null,
+    typeof options.cookieTimeoutMs === 'number' &&
-    source: null,
+    Number.isFinite(options.cookieTimeoutMs) &&
-  };
+    options.cookieTimeoutMs > 0
+      ? options.cookieTimeoutMs
+      : process.platform === 'darwin'
+        ? DEFAULT_COOKIE_TIMEOUT_MS
+        : undefined;
 
-  // 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';
+    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.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;
-      }
-    }
-  }
-
-  const allowFirefox = options.allowFirefox ?? true;
-  const allowChrome = options.allowChrome ?? true;
-
-  // 3. Firefox cookies (preferred browser fallback)
-  if (allowFirefox && (!cookies.authToken || !cookies.ct0)) {
-    const firefoxResult = await extractCookiesFromFirefox(options.firefoxProfile);
-    warnings.push(...firefoxResult.warnings);
-
-    if (!cookies.authToken && firefoxResult.cookies.authToken) {
-      cookies.authToken = firefoxResult.cookies.authToken;
-      cookies.source = firefoxResult.cookies.source;
-    }
-    if (!cookies.ct0 && firefoxResult.cookies.ct0) {
-      cookies.ct0 = firefoxResult.cookies.ct0;
-      if (!cookies.source) cookies.source = firefoxResult.cookies.source;
     }
   }
 
-  // 4. Chrome cookies (secondary browser fallback)
+  readEnvCookie(cookies, ['AUTH_TOKEN', 'TWITTER_AUTH_TOKEN'], 'authToken');
-  if (allowChrome && (!cookies.authToken || !cookies.ct0)) {
+  readEnvCookie(cookies, ['CT0', 'TWITTER_CT0'], 'ct0');
-    const chromeResult = await extractCookiesFromChrome(options.chromeProfile);
-    warnings.push(...chromeResult.warnings);
 
-    if (!cookies.authToken && chromeResult.cookies.authToken) {
+  if (cookies.authToken && cookies.ct0) {
-      cookies.authToken = chromeResult.cookies.authToken;
+    cookies.cookieHeader = cookieHeader(cookies.authToken, cookies.ct0);
-      cookies.source = chromeResult.cookies.source;
+    return { cookies, warnings };
   }
-    if (!cookies.ct0 && chromeResult.cookies.ct0) {
+
-      cookies.ct0 = chromeResult.cookies.ct0;
+  const sourcesToTry = resolveSources(options.cookieSource);
-      if (!cookies.source) cookies.source = chromeResult.cookies.source;
+  for (const source of sourcesToTry) {
+    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 Chrome/Firefox',
+      'Missing auth_token - provide via --auth-token, AUTH_TOKEN env var, or login to x.com in Safari/Chrome/Firefox',
     );
   }
   if (!cookies.ct0) {
-    warnings.push('Missing ct0 - provide via --ct0, CT0 env var, or login to x.com in Chrome/Firefox');
+    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 = 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-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\/(\d+)/;
+
 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/index.ts

@@ -0,0 +1,21 @@
+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 { TweetResult, UploadMediaResult } from './twitter-client-types.js';

src/lib/normalize-handle.ts

@@ -0,0 +1,40 @@
+const HANDLE_REGEX = /^[A-Za-z0-9_]{1,15}$/;
+
+export function normalizeHandle(input?: string | null): string | null {
+  const raw = (input ?? '').trim();
+  if (!raw) {
+    return null;
+  }
+
+  const withoutAt = raw.startsWith('@') ? raw.slice(1) : raw;
+  const handle = withoutAt.trim();
+  if (!handle) {
+    return null;
+  }
+
+  // X/Twitter handles are traditionally max 15 chars; keep strict to avoid surprising queries.
+  if (!HANDLE_REGEX.test(handle)) {
+    return null;
+  }
+
+  return handle;
+}
+
+export function mentionsQueryFromUserOption(userOption?: string | null): {
+  query: string | null;
+  error: string | null;
+} {
+  if (typeof userOption === 'undefined') {
+    return { query: null, error: null };
+  }
+
+  const handle = normalizeHandle(userOption);
+  if (!handle) {
+    return {
+      query: null,
+      error: 'Invalid --user handle. Expected something like @steipete (letters, digits, underscore; max 15).',
+    };
+  }
+
+  return { query: `@${handle}`, error: null };
+}

src/lib/output.ts

@@ -0,0 +1,98 @@
+export type OutputConfig = {
+  plain: boolean;
+  emoji: boolean;
+  color: boolean;
+};
+
+export type StatusKind = 'ok' | 'warn' | 'err' | 'info' | 'hint';
+export type LabelKind = 'url' | 'date' | 'source' | 'engine' | 'credentials' | 'user' | 'userId' | 'email';
+
+const STATUS: Record<StatusKind, { emoji: string; text: string; plain: string }> = {
+  ok: { emoji: '✅', text: 'OK:', plain: '[ok]' },
+  warn: { emoji: '⚠️', text: 'Warning:', plain: '[warn]' },
+  err: { emoji: '❌', text: 'Error:', plain: '[err]' },
+  info: { emoji: 'ℹ️', text: 'Info:', plain: '[info]' },
+  hint: { emoji: 'ℹ️', text: 'Hint:', plain: '[hint]' },
+};
+
+const LABELS: Record<LabelKind, { emoji: string; text: string; plain: string }> = {
+  url: { emoji: '🔗', text: 'URL:', plain: 'url:' },
+  date: { emoji: '📅', text: 'Date:', plain: 'date:' },
+  source: { emoji: '📍', text: 'Source:', plain: 'source:' },
+  engine: { emoji: '⚙️', text: 'Engine:', plain: 'engine:' },
+  credentials: { emoji: '🔑', text: 'Credentials:', plain: 'credentials:' },
+  user: { emoji: '🙋', text: 'User:', plain: 'user:' },
+  userId: { emoji: '🪪', text: 'User ID:', plain: 'user_id:' },
+  email: { emoji: '📧', text: 'Email:', plain: 'email:' },
+};
+
+export function resolveOutputConfigFromArgv(argv: string[], env: NodeJS.ProcessEnv, isTty: boolean): OutputConfig {
+  const hasNoColorEnv = Object.hasOwn(env, 'NO_COLOR') || env.TERM === 'dumb';
+  const defaultColor = isTty && !hasNoColorEnv;
+
+  const plain = argv.includes('--plain');
+  const emoji = !plain && !argv.includes('--no-emoji');
+  const color = !plain && !argv.includes('--no-color') && defaultColor;
+
+  return { plain, emoji, color };
+}
+
+export function resolveOutputConfigFromCommander(
+  opts: { plain?: boolean; emoji?: boolean; color?: boolean },
+  env: NodeJS.ProcessEnv,
+  isTty: boolean,
+): OutputConfig {
+  const hasNoColorEnv = Object.hasOwn(env, 'NO_COLOR') || env.TERM === 'dumb';
+  const defaultColor = isTty && !hasNoColorEnv;
+
+  const plain = Boolean(opts.plain);
+  const emoji = !plain && (opts.emoji ?? true);
+  const color = !plain && (opts.color ?? true) && defaultColor;
+
+  return { plain, emoji, color };
+}
+
+export function statusPrefix(kind: StatusKind, cfg: OutputConfig): string {
+  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 `${LABELS[kind].emoji} `;
+  }
+  return `${LABELS[kind].text} `;
+}
+
+export function formatStatsLine(
+  stats: { likeCount?: number | null; retweetCount?: number | null; replyCount?: number | null },
+  cfg: OutputConfig,
+): string {
+  const likeCount = stats.likeCount ?? 0;
+  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}`;
+  }
+  return `❤️ ${likeCount}  🔁 ${retweetCount}  💬 ${replyCount}`;
+}
+
+export function formatTweetUrl(tweetId: string): string {
+  return `https://x.com/i/status/${tweetId}`;
+}
+
+export function formatTweetUrlLine(tweetId: string, cfg: OutputConfig): string {
+  return `${labelPrefix('url', cfg)}${formatTweetUrl(tweetId)}`;
+}

src/lib/query-ids.json

@@ -1,7 +1,12 @@
 {
-  "CreateTweet": "2BA2DIWTRVxHgKc4Xh2uKQ",
+  "CreateTweet": "Uf3io9zVp1DsYxrmL5FJ7g",
-  "CreateRetweet": "Uf3io9zVp1DsYxrmL5FJ7g",
+  "CreateRetweet": "LFho5rIi4xcKO90p9jwG7A",
-  "FavoriteTweet": "kuFUYP9eV1FPoEy4N-pi7w",
+  "FavoriteTweet": "lI07N6Otwv1PhnEgXILM7A",
-  "TweetDetail": "aFvUsJm2c-oDkJV75blV6g",
+  "TweetDetail": "97JF30KziU00483E_8elBA",
-  "SearchTimeline": "M1jEez78PEfVfbQLvlWMvQ"
+  "SearchTimeline": "M1jEez78PEfVfbQLvlWMvQ",
+  "Bookmarks": "RV1g3b8n_SGOHwkqKYSCFw",
+  "BookmarkFolderTimeline": "KJIQpsvxrTfRIlbaRIySHQ",
+  "Following": "BEkNpEt5pNETESoqMsTEGA",
+  "Followers": "kuFUYP9eV1FPoEy4N-pi7w",
+  "Likes": "JR2gceKucIKcVNB_9JkhsA"
 }

src/lib/runtime-query-ids.ts

@@ -0,0 +1,341 @@
+import { mkdir, readFile, writeFile } from 'node:fs/promises';
+import { homedir } from 'node:os';
+import path from 'node:path';
+
+const DEFAULT_CACHE_FILENAME = 'query-ids-cache.json';
+const DEFAULT_TTL_MS: number = 24 * 60 * 60 * 1000;
+
+const DISCOVERY_PAGES: string[] = [
+  'https://x.com/?lang=en',
+  'https://x.com/explore',
+  'https://x.com/notifications',
+  'https://x.com/settings/profile',
+];
+
+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 = [
+  {
+    regex: /e\.exports=\{queryId\s*:\s*["']([^"']+)["']\s*,\s*operationName\s*:\s*["']([^"']+)["']/gs,
+    operationGroup: 2,
+    queryIdGroup: 1,
+  },
+  {
+    regex: /e\.exports=\{operationName\s*:\s*["']([^"']+)["']\s*,\s*queryId\s*:\s*["']([^"']+)["']/gs,
+    operationGroup: 1,
+    queryIdGroup: 2,
+  },
+  {
+    regex: /operationName\s*[:=]\s*["']([^"']+)["'](.{0,4000}?)queryId\s*[:=]\s*["']([^"']+)["']/gs,
+    operationGroup: 1,
+    queryIdGroup: 3,
+  },
+  {
+    regex: /queryId\s*[:=]\s*["']([^"']+)["'](.{0,4000}?)operationName\s*[:=]\s*["']([^"']+)["']/gs,
+    operationGroup: 3,
+    queryIdGroup: 1,
+  },
+] as const;
+
+const HEADERS = {
+  'User-Agent':
+    'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36',
+  Accept: 'text/html,application/json;q=0.9,*/*;q=0.8',
+  'Accept-Language': 'en-US,en;q=0.9',
+};
+
+export type RuntimeQueryIdSnapshot = {
+  fetchedAt: string;
+  ttlMs: number;
+  ids: Record<string, string>;
+  discovery: {
+    pages: string[];
+    bundles: string[];
+  };
+};
+
+export type RuntimeQueryIdSnapshotInfo = {
+  snapshot: RuntimeQueryIdSnapshot;
+  cachePath: string;
+  ageMs: number;
+  isFresh: boolean;
+};
+
+export type RuntimeQueryIdsOptions = {
+  cachePath?: string;
+  ttlMs?: number;
+  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) {
+    const body = await response.text().catch(() => '');
+    throw new Error(`HTTP ${response.status} for ${url}: ${body.slice(0, 120)}`);
+  }
+  return response.text();
+}
+
+function resolveDefaultCachePath(): string {
+  const override = process.env.BIRD_QUERY_IDS_CACHE;
+  if (override && override.trim().length > 0) {
+    return path.resolve(override.trim());
+  }
+  return path.join(homedir(), '.config', 'bird', DEFAULT_CACHE_FILENAME);
+}
+
+function parseSnapshot(raw: unknown): RuntimeQueryIdSnapshot | 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;
+  const ids = record.ids && typeof record.ids === 'object' ? (record.ids as Record<string, unknown>) : null;
+  const discovery =
+    record.discovery && typeof record.discovery === 'object' ? (record.discovery as Record<string, unknown>) : 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;
+  }
+
+  const normalizedIds: Record<string, string> = {};
+  for (const [key, value] of Object.entries(ids)) {
+    if (typeof value === 'string' && value.trim().length > 0) {
+      normalizedIds[key] = value.trim();
+    }
+  }
+
+  return {
+    fetchedAt,
+    ttlMs,
+    ids: normalizedIds,
+    discovery: {
+      pages: pages.filter((p) => typeof p === 'string') as string[],
+      bundles: bundles.filter((b) => typeof b === 'string') as string[],
+    },
+  };
+}
+
+async function readSnapshotFromDisk(cachePath: string): Promise<RuntimeQueryIdSnapshot | null> {
+  try {
+    const raw = await readFile(cachePath, 'utf8');
+    return parseSnapshot(JSON.parse(raw));
+  } catch {
+    return null;
+  }
+}
+
+async function writeSnapshotToDisk(cachePath: string, snapshot: RuntimeQueryIdSnapshot): Promise<void> {
+  await mkdir(path.dirname(cachePath), { recursive: true });
+  await writeFile(cachePath, `${JSON.stringify(snapshot, null, 2)}\n`, 'utf8');
+}
+
+async function discoverBundles(fetchImpl: typeof fetch): Promise<string[]> {
+  const bundles = new Set<string>();
+  for (const page of DISCOVERY_PAGES) {
+    try {
+      const html = await fetchText(fetchImpl, page);
+      for (const match of html.matchAll(BUNDLE_URL_REGEX)) {
+        bundles.add(match[0]);
+      }
+    } catch {
+      // ignore discovery page failures; other pages often work
+    }
+  }
+  const discovered = [...bundles];
+  if (discovered.length === 0) {
+    throw new Error('No client bundles discovered; x.com layout may have changed.');
+  }
+  return discovered;
+}
+
+function extractOperations(
+  bundleContents: string,
+  bundleLabel: string,
+  targets: Set<string>,
+  discovered: Map<string, { queryId: string; bundle: string }>,
+): void {
+  for (const pattern of OPERATION_PATTERNS) {
+    pattern.regex.lastIndex = 0;
+    while (true) {
+      const match = pattern.regex.exec(bundleContents);
+      if (match === null) {
+        break;
+      }
+      const operationName = match[pattern.operationGroup];
+      const queryId = match[pattern.queryIdGroup];
+      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;
+      }
+    }
+  }
+}
+
+async function fetchAndExtract(
+  fetchImpl: typeof fetch,
+  bundleUrls: string[],
+  targets: Set<string>,
+): Promise<Map<string, { queryId: string; bundle: string }>> {
+  const discovered = new Map<string, { queryId: string; bundle: string }>();
+  const CONCURRENCY = 6;
+
+  for (let i = 0; i < bundleUrls.length; i += CONCURRENCY) {
+    const chunk = bundleUrls.slice(i, i + CONCURRENCY);
+    await Promise.all(
+      chunk.map(async (url) => {
+        if (discovered.size === targets.size) {
+          return;
+        }
+        const label = url.split('/').at(-1) ?? url;
+        try {
+          const js = await fetchText(fetchImpl, url);
+          extractOperations(js, label, targets, discovered);
+        } catch {
+          // ignore failed bundles
+        }
+      }),
+    );
+    if (discovered.size === targets.size) {
+      break;
+    }
+  }
+
+  return discovered;
+}
+
+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();
+
+  let memorySnapshot: RuntimeQueryIdSnapshot | null = null;
+  let loadOnce: Promise<RuntimeQueryIdSnapshot | null> | null = null;
+  let refreshInFlight: Promise<RuntimeQueryIdSnapshotInfo | null> | null = null;
+
+  const loadSnapshot = async (): Promise<RuntimeQueryIdSnapshot | null> => {
+    if (memorySnapshot) {
+      return memorySnapshot;
+    }
+    if (!loadOnce) {
+      loadOnce = (async () => {
+        const fromDisk = await readSnapshotFromDisk(cachePath);
+        memorySnapshot = fromDisk;
+        return fromDisk;
+      })();
+    }
+    return loadOnce;
+  };
+
+  const getSnapshotInfo = async (): Promise<RuntimeQueryIdSnapshotInfo | null> => {
+    const snapshot = await loadSnapshot();
+    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;
+    const isFresh = ageMs <= effectiveTtl;
+    return { snapshot, cachePath, ageMs, isFresh };
+  };
+
+  const getQueryId = async (operationName: string): Promise<string | null> => {
+    const info = await getSnapshotInfo();
+    if (!info) {
+      return null;
+    }
+    return info.snapshot.ids[operationName] ?? null;
+  };
+
+  const refresh = async (
+    operationNames: string[],
+    opts: { force?: boolean } = {},
+  ): Promise<RuntimeQueryIdSnapshotInfo | null> => {
+    if (refreshInFlight) {
+      return refreshInFlight;
+    }
+
+    refreshInFlight = (async () => {
+      const current = await getSnapshotInfo();
+      if (!opts.force && current?.isFresh) {
+        return current;
+      }
+
+      const targets = new Set(operationNames);
+      const bundleUrls = await discoverBundles(fetchImpl);
+      const discovered = await fetchAndExtract(fetchImpl, bundleUrls, targets);
+      if (discovered.size === 0) {
+        return current ?? null;
+      }
+
+      const ids: Record<string, string> = {};
+      for (const name of operationNames) {
+        const entry = discovered.get(name);
+        if (entry?.queryId) {
+          ids[name] = entry.queryId;
+        }
+      }
+
+      const snapshot: RuntimeQueryIdSnapshot = {
+        fetchedAt: new Date().toISOString(),
+        ttlMs,
+        ids,
+        discovery: {
+          pages: [...DISCOVERY_PAGES],
+          bundles: bundleUrls.map((url) => url.split('/').at(-1) ?? url),
+        },
+      };
+
+      await writeSnapshotToDisk(cachePath, snapshot);
+      memorySnapshot = snapshot;
+
+      return getSnapshotInfo();
+    })().finally(() => {
+      refreshInFlight = null;
+    });
+
+    return refreshInFlight;
+  };
+
+  return {
+    cachePath,
+    ttlMs,
+    getSnapshotInfo,
+    getQueryId,
+    refresh,
+    clearMemory() {
+      memorySnapshot = null;
+      loadOnce = null;
+    },
+  };
+}
+
+export const runtimeQueryIds = createRuntimeQueryIdStore();

src/lib/sweetistics-client.ts

@@ -1,534 +0,0 @@
-import { parse as devalueParse } from 'devalue';
-
-export interface SweetisticsClientOptions {
-  baseUrl: string;
-  apiKey: string;
-  userAgent?: string;
-  timeoutMs?: number;
-}
-
-export interface SweetisticsTweetResult {
-  success: boolean;
-  tweetId?: string;
-  error?: string;
-}
-
-export interface SweetisticsTweet {
-  id: string;
-  text: string;
-  author: {
-    username: string;
-    name: string;
-  };
-  createdAt?: string;
-  replyCount?: number;
-  retweetCount?: number;
-  likeCount?: number;
-  conversationId?: string;
-  inReplyToStatusId?: string;
-}
-
-export interface SweetisticsTimelineResult {
-  success: boolean;
-  tweets?: SweetisticsTweet[];
-  error?: string;
-}
-
-export interface SweetisticsReadResult {
-  success: boolean;
-  tweet?: SweetisticsTweet;
-  error?: string;
-}
-
-export interface SweetisticsUserResult {
-  success: boolean;
-  user?: {
-    id: string;
-    username?: string | null;
-    name?: string | null;
-    email?: string | null;
-    profileImageUrl?: string | null;
-  };
-  error?: string;
-}
-
-type TrpcResponseEnvelope = { result?: { data?: unknown; error?: unknown } };
-
-function normalizeBaseUrl(value: string): string {
-  const trimmed = value.trim();
-  if (!trimmed) return 'https://sweetistics.com';
-  return trimmed.endsWith('/') ? trimmed.slice(0, -1) : trimmed;
-}
-
-export class SweetisticsClient {
-  private readonly baseUrl: string;
-  private readonly apiKey: string;
-  private readonly userAgent?: string;
-  private readonly timeoutMs: number;
-  // Prevent hanging requests; keep Sweetistics calls snappy for CLI users.
-  private static readonly DEFAULT_REQUEST_TIMEOUT_MS = 15_000;
-
-  constructor(options: SweetisticsClientOptions) {
-    this.baseUrl = normalizeBaseUrl(options.baseUrl);
-    this.apiKey = options.apiKey.trim();
-    this.userAgent = options.userAgent;
-    this.timeoutMs = options.timeoutMs ?? SweetisticsClient.DEFAULT_REQUEST_TIMEOUT_MS;
-    if (!this.apiKey) {
-      throw new Error('Sweetistics API key is required');
-    }
-  }
-
-  async tweet(text: string, replyToTweetId?: string, mediaIds?: string[]): Promise<SweetisticsTweetResult> {
-    const payload: Record<string, unknown> = { text };
-    if (replyToTweetId) {
-      payload.replyToTweetId = replyToTweetId;
-    }
-    if (mediaIds && mediaIds.length > 0) {
-      payload.mediaIds = mediaIds;
-    }
-
-    let response: Response;
-    try {
-      response = await this.fetchWithTimeout(`${this.baseUrl}/api/actions/tweet`, {
-        method: 'POST',
-        headers: {
-          authorization: `Bearer ${this.apiKey}`,
-          'content-type': 'application/json',
-          ...(this.userAgent ? { 'user-agent': this.userAgent } : {}),
-        },
-        body: JSON.stringify(payload),
-      });
-    } catch (error) {
-      return { success: false, error: this.normalizeError(error) };
-    }
-
-    let data: unknown;
-    try {
-      data = await response.json();
-    } catch (error) {
-      return {
-        success: false,
-        error: `Sweetistics response parse failed: ${error instanceof Error ? error.message : String(error)}`,
-      };
-    }
-
-    const success =
-      typeof (data as { success?: unknown })?.success === 'boolean' ? (data as { success: boolean }).success : false;
-    const tweetId =
-      typeof (data as { tweetId?: unknown })?.tweetId === 'string' ? (data as { tweetId?: string }).tweetId : undefined;
-    const errorMessage =
-      typeof (data as { error?: unknown })?.error === 'string' ? (data as { error?: string }).error : undefined;
-
-    if (!response.ok || !success) {
-      const reason = errorMessage || `HTTP ${response.status}`;
-      return { success: false, error: reason };
-    }
-
-    return { success: true, tweetId };
-  }
-
-  async read(tweetId: string): Promise<SweetisticsReadResult> {
-    // Public REST route that returns a single tweet record
-    const url = `${this.baseUrl}/api/tweets/${encodeURIComponent(tweetId)}`;
-    let response: Response;
-    try {
-      response = await this.fetchWithTimeout(url, {
-        headers: {
-          authorization: `Bearer ${this.apiKey}`,
-          ...(this.userAgent ? { 'user-agent': this.userAgent } : {}),
-        },
-      });
-    } catch (error) {
-      return { success: false, error: this.normalizeError(error) };
-    }
-
-    if (!response.ok) {
-      return { success: false, error: `HTTP ${response.status}` };
-    }
-
-    // biome-ignore lint/suspicious/noExplicitAny: Sweetistics responses are loosely typed
-    let data: any;
-    try {
-      data = await response.json();
-    } catch (error) {
-      return {
-        success: false,
-        error: `Sweetistics response parse failed: ${error instanceof Error ? error.message : String(error)}`,
-      };
-    }
-
-    if (!data?.id || !data?.author) {
-      return { success: false, error: 'Malformed tweet payload from Sweetistics' };
-    }
-
-    const tweet: SweetisticsTweet = {
-      id: String(data.id),
-      text: String(data.text ?? ''),
-      author: {
-        username: String(data.author.username ?? ''),
-        name: String(data.author.name ?? ''),
-      },
-      createdAt: data.createdAt,
-      replyCount: data.metrics?.replyCount,
-      retweetCount: data.metrics?.retweetCount,
-      likeCount: data.metrics?.likeCount,
-      conversationId: data.conversationId,
-      // biome-ignore lint/suspicious/noExplicitAny: Sweetistics responses are loosely typed
-      inReplyToStatusId: data.referencedTweets?.find?.((r: any) => r?.type === 'replied_to')?.id,
-    };
-
-    return { success: true, tweet };
-  }
-
-  async replies(tweetId: string): Promise<SweetisticsTimelineResult> {
-    return this.fetchConversation(tweetId, { excludeRoot: true });
-  }
-
-  async thread(tweetId: string): Promise<SweetisticsTimelineResult> {
-    return this.fetchConversation(tweetId, { excludeRoot: false });
-  }
-
-  async search(query: string, count: number): Promise<SweetisticsTimelineResult> {
-    const payload = {
-      query,
-      capabilities: [
-        {
-          resource: 'tweets',
-          source: 'postgres',
-          limit: Math.max(1, Math.min(count, 50)),
-          offset: 0,
-          detail: 'summary',
-          includeRetweets: true,
-        },
-      ],
-    };
-
-    let response: Response;
-    try {
-      response = await this.fetchWithTimeout(`${this.baseUrl}/api/trpc/search.execute?batch=1`, {
-        method: 'POST',
-        headers: {
-          authorization: `Bearer ${this.apiKey}`,
-          'content-type': 'application/json',
-          ...(this.userAgent ? { 'user-agent': this.userAgent } : {}),
-        },
-        body: JSON.stringify({ 0: { json: payload } }),
-      });
-    } catch (error) {
-      return { success: false, error: this.normalizeError(error) };
-    }
-
-    if (!response.ok) {
-      return { success: false, error: `HTTP ${response.status}` };
-    }
-
-    // biome-ignore lint/suspicious/noExplicitAny: Sweetistics responses are loosely typed
-    let body: any;
-    try {
-      body = await response.json();
-    } catch (error) {
-      return {
-        success: false,
-        error: `Sweetistics response parse failed: ${error instanceof Error ? error.message : String(error)}`,
-      };
-    }
-
-    const envelope = Array.isArray(body) ? body[0] : body;
-    if (envelope?.error) {
-      const message = envelope.error?.message ?? 'Unknown search error';
-      return { success: false, error: message };
-    }
-    const dataField = envelope?.result?.data;
-    if (!dataField) {
-      return { success: false, error: 'Missing data in Sweetistics search response' };
-    }
-
-    // biome-ignore lint/suspicious/noExplicitAny: Sweetistics responses are loosely typed
-    let parsed: any;
-    try {
-      parsed = typeof dataField === 'string' ? devalueParse(dataField) : dataField;
-    } catch (error) {
-      return {
-        success: false,
-        error: `Sweetistics search decode failed: ${error instanceof Error ? error.message : String(error)}`,
-      };
-    }
-
-    const tweetsSection = parsed?.tweets;
-    // biome-ignore lint/suspicious/noExplicitAny: Sweetistics responses are loosely typed
-    const items: any[] = tweetsSection?.items ?? [];
-    if (items.length === 0) {
-      return { success: true, tweets: [] };
-    }
-
-    const tweets: SweetisticsTweet[] = items.map((item) => {
-      const authorUsername = item.authorUsername || item.username || item.full?.author?.username || '';
-      const authorName = item.authorName || item.full?.author?.name || authorUsername;
-      const createdAt =
-        typeof item.createdAt === 'string'
-          ? item.createdAt
-          : (item.createdAt?.toString?.() ??
-            (Array.isArray(item.createdAt) && item.createdAt[0] === 'Date' ? item.createdAt[1] : undefined));
-      const metrics = item.full?.metrics ?? item.full ?? item;
-
-      return {
-        id: String(item.id),
-        text: String(item.text ?? item.full?.text ?? ''),
-        author: { username: String(authorUsername), name: String(authorName) },
-        createdAt,
-        replyCount: metrics?.replyCount ?? metrics?.replies ?? 0,
-        retweetCount: metrics?.retweetCount ?? metrics?.retweets ?? 0,
-        likeCount: metrics?.likeCount ?? metrics?.likes ?? 0,
-        conversationId: item.conversationId ?? item.full?.conversationId,
-        inReplyToStatusId: item.full?.inReplyToStatusId ?? undefined,
-      };
-    });
-
-    return { success: true, tweets };
-  }
-
-  async getCurrentUser(): Promise<SweetisticsUserResult> {
-    const headers = {
-      authorization: `Bearer ${this.apiKey}`,
-      'content-type': 'application/json',
-      ...(this.userAgent ? { 'user-agent': this.userAgent } : {}),
-    } satisfies Record<string, string>;
-
-    let response: Response;
-    try {
-      response = await this.fetchWithTimeout(`${this.baseUrl}/api/trpc/user.getCurrent?batch=1`, {
-        method: 'POST',
-        headers,
-        body: JSON.stringify({ 0: { json: null } }),
-      });
-    } catch (error) {
-      return { success: false, error: this.normalizeError(error) };
-    }
-
-    // Some deployments only allow GET for queries; fall back if POST is not allowed
-    if (response.status === 405) {
-      try {
-        response = await this.fetchWithTimeout(
-          `${this.baseUrl}/api/trpc/user.getCurrent?input=${encodeURIComponent('null')}`,
-          {
-            method: 'GET',
-            headers,
-          },
-        );
-      } catch (error) {
-        return { success: false, error: this.normalizeError(error) };
-      }
-    }
-
-    if (!response.ok) {
-      return { success: false, error: `HTTP ${response.status}` };
-    }
-
-    // biome-ignore lint/suspicious/noExplicitAny: Sweetistics responses are loosely typed
-    let body: any;
-    try {
-      body = await response.json();
-    } catch (error) {
-      return {
-        success: false,
-        error: `Sweetistics response parse failed: ${error instanceof Error ? error.message : String(error)}`,
-      };
-    }
-
-    const envelope = Array.isArray(body) ? body[0] : body;
-    const maybeError = envelope?.error?.message || envelope?.result?.error?.message;
-    if (maybeError) {
-      return { success: false, error: String(maybeError) };
-    }
-
-    let data = envelope?.result?.data?.json ?? envelope?.result?.data ?? envelope?.json ?? envelope;
-
-    try {
-      if (typeof data === 'string') {
-        data = devalueParse(data);
-      } else if (data && typeof data === 'object' && 'json' in (data as Record<string, unknown>)) {
-        const inner = (data as Record<string, unknown>).json;
-        data = typeof inner === 'string' ? devalueParse(inner) : inner;
-      }
-    } catch (error) {
-      return {
-        success: false,
-        error: `Sweetistics response decode failed: ${error instanceof Error ? error.message : String(error)}`,
-      };
-    }
-
-    const user = data && typeof data === 'object' ? data : null;
-    // biome-ignore lint/suspicious/noExplicitAny: Sweetistics responses are loosely typed
-    if (!user || typeof (user as any).id !== 'string') {
-      return { success: false, error: 'Malformed user payload from Sweetistics' };
-    }
-
-    return {
-      success: true,
-      user: {
-        // biome-ignore lint/suspicious/noExplicitAny: Sweetistics responses are loosely typed
-        id: String((user as any).id),
-        username:
-          // biome-ignore lint/suspicious/noExplicitAny: Sweetistics responses are loosely typed
-          (user as any).username ?? (user as any).twitterUsername ?? null,
-        // biome-ignore lint/suspicious/noExplicitAny: Sweetistics responses are loosely typed
-        name: (user as any).name ?? null,
-        // biome-ignore lint/suspicious/noExplicitAny: Sweetistics responses are loosely typed
-        email: (user as any).email ?? null,
-        // biome-ignore lint/suspicious/noExplicitAny: Sweetistics responses are loosely typed
-        profileImageUrl: (user as any).profileImageUrl ?? null,
-      },
-    };
-  }
-
-  private async fetchConversation(
-    tweetId: string,
-    options: { excludeRoot: boolean; force?: boolean } = { excludeRoot: false, force: true },
-  ): Promise<SweetisticsTimelineResult> {
-    const url = new URL(`${this.baseUrl}/api/trpc/tweets.getConversation`);
-    const input: Record<string, unknown> = { tweetId };
-    // Always request a fresh conversation to avoid cached Sweetistics data unless explicitly disabled
-    if (options.force ?? true) {
-      input.force = 'true';
-    }
-    url.searchParams.set('input', JSON.stringify(input));
-
-    let response: Response;
-    try {
-      response = await this.fetchWithTimeout(url.toString(), {
-        headers: {
-          authorization: `Bearer ${this.apiKey}`,
-          ...(this.userAgent ? { 'user-agent': this.userAgent } : {}),
-        },
-      });
-    } catch (error) {
-      return { success: false, error: this.normalizeError(error) };
-    }
-
-    if (!response.ok) {
-      return { success: false, error: `HTTP ${response.status}` };
-    }
-
-    let envelope: TrpcResponseEnvelope;
-    try {
-      envelope = (await response.json()) as TrpcResponseEnvelope;
-    } catch (error) {
-      return {
-        success: false,
-        error: `Sweetistics response parse failed: ${error instanceof Error ? error.message : String(error)}`,
-      };
-    }
-
-    if (!envelope?.result?.data) {
-      return { success: false, error: 'Missing data in Sweetistics response' };
-    }
-
-    // biome-ignore lint/suspicious/noExplicitAny: Sweetistics responses are loosely typed
-    let parsed: any;
-    try {
-      const raw =
-        typeof envelope.result.data === 'string' ? devalueParse(envelope.result.data as string) : envelope.result.data;
-      parsed = raw;
-    } catch (error) {
-      return {
-        success: false,
-        error: `Sweetistics response decode failed: ${error instanceof Error ? error.message : String(error)}`,
-      };
-    }
-
-    const tweetIds: string[] = Array.isArray(parsed?.tweetIds) ? parsed.tweetIds.map(String) : [];
-    // biome-ignore lint/suspicious/noExplicitAny: Sweetistics responses are loosely typed
-    const tweetsMap: Record<string, any> = parsed?.tweets ?? {};
-
-    if (tweetIds.length === 0 || Object.keys(tweetsMap).length === 0) {
-      return { success: false, error: 'Conversation empty or unavailable' };
-    }
-
-    const rootId = tweetId;
-    const filteredIds = options.excludeRoot ? tweetIds.filter((id) => id !== rootId) : tweetIds;
-
-    const tweets: SweetisticsTweet[] = filteredIds
-      .map((id) => tweetsMap[id])
-      .filter(Boolean)
-      // biome-ignore lint/suspicious/noExplicitAny: Sweetistics responses are loosely typed
-      .map((item: any) => ({
-        id: String(item.id),
-        text: String(item.text ?? ''),
-        author: {
-          username: String(item.author?.username ?? ''),
-          name: String(item.author?.name ?? ''),
-        },
-        createdAt: item.createdAt ?? item.timestamp ?? undefined,
-        replyCount: item.replyCount ?? item.metrics?.replyCount,
-        retweetCount: item.retweetCount ?? item.metrics?.retweetCount,
-        likeCount: item.likeCount ?? item.metrics?.likeCount,
-        conversationId: item.conversationId ?? undefined,
-        inReplyToStatusId: item.inReplyToStatusId ?? undefined,
-      }));
-
-    return { success: true, tweets };
-  }
-
-  async uploadMedia(input: {
-    data: string;
-    mimeType: string;
-    alt?: string;
-  }): Promise<{ success: boolean; mediaId?: string; error?: string }> {
-    try {
-      const response = await this.fetchWithTimeout(`${this.baseUrl}/api/actions/media/upload`, {
-        method: 'POST',
-        headers: {
-          authorization: `Bearer ${this.apiKey}`,
-          'content-type': 'application/json',
-          ...(this.userAgent ? { 'user-agent': this.userAgent } : {}),
-        },
-        body: JSON.stringify(input),
-      });
-
-      let body: unknown;
-      try {
-        body = await response.json();
-      } catch (error) {
-        return { success: false, error: this.normalizeError(error) };
-      }
-
-      const mediaId =
-        typeof (body as { mediaId?: unknown })?.mediaId === 'string'
-          ? (body as { mediaId: string }).mediaId
-          : undefined;
-      const errorMessage =
-        typeof (body as { error?: unknown })?.error === 'string' ? (body as { error: string }).error : undefined;
-
-      if (!response.ok || !mediaId) {
-        return { success: false, error: errorMessage ?? `HTTP ${response.status}` };
-      }
-      return { success: true, mediaId };
-    } catch (error) {
-      return { success: false, error: this.normalizeError(error) };
-    }
-  }
-
-  private async fetchWithTimeout(url: string, init?: RequestInit): Promise<Response> {
-    const controller = new AbortController();
-    const timeoutId = setTimeout(
-      () => controller.abort(new Error(`Request timed out after ${this.timeoutMs}ms`)),
-      this.timeoutMs,
-    );
-
-    try {
-      return await fetch(url, { ...init, signal: controller.signal });
-    } finally {
-      clearTimeout(timeoutId);
-    }
-  }
-
-  private normalizeError(error: unknown): string {
-    if (error instanceof Error) {
-      if ((error as { name?: string }).name === 'AbortError') {
-        return 'Request timed out';
-      }
-      return error.message;
-    }
-    return String(error);
-  }
-}

src/lib/twitter-client-base.ts

@@ -0,0 +1,142 @@
+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 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-constants.ts

@@ -0,0 +1,37 @@
+// 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',
+  TweetDetail: '97JF30KziU00483E_8elBA',
+  SearchTimeline: 'M1jEez78PEfVfbQLvlWMvQ',
+  UserArticlesTweets: '8zBy9h4L90aDL02RsBcCFg',
+  Bookmarks: 'RV1g3b8n_SGOHwkqKYSCFw',
+  Following: 'BEkNpEt5pNETESoqMsTEGA',
+  Followers: 'kuFUYP9eV1FPoEy4N-pi7w',
+  Likes: 'JR2gceKucIKcVNB_9JkhsA',
+  BookmarkFolderTimeline: 'KJIQpsvxrTfRIlbaRIySHQ',
+} 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 +1,210 @@
+export function buildArticleFeatures(): Record<string, boolean> {
+  return {
+    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_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_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: 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 {
+    ...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 {
+    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_jetfuel_frame: 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 {
+    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_jetfuel_frame: 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 {
+    ...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 {
+    ...buildTimelineFeatures(),
+    graphql_timeline_v2_bookmark_timeline: true,
+  };
+}
+
+export function buildLikesFeatures(): Record<string, boolean> {
+  return buildTimelineFeatures();
+}
+
+export function buildFollowingFeatures(): Record<string, boolean> {
+  return {
+    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_jetfuel_frame: false,
+    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,
+  };
+}

src/lib/twitter-client-media.ts

@@ -0,0 +1,179 @@
+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;
+    }
+
+    private async sleep(ms: number): Promise<void> {
+      await new Promise((resolve) => setTimeout(resolve, ms));
+    }
+
+    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-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 +1,173 @@
+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';
+
+export interface TwitterClientSearchMethods {
+  search(query: string, count?: number): Promise<SearchResult>;
+}
+
+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): Promise<SearchResult> {
+      const features = buildSearchFeatures();
+      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 = 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();
+              return { success: false as const, error: `HTTP ${response.status}: ${text.slice(0, 200)}`, had404 };
+            }
+
+            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 }>;
+            };
+
+            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?.search_by_raw_query?.search_timeline?.timeline?.instructions;
+            const pageTweets = parseTweetsFromInstructions(instructions, this.quoteDepth);
+            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 };
+      };
+
+      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 };
+        }
+
+        for (const tweet of page.tweets) {
+          if (seen.has(tweet.id)) {
+            continue;
+          }
+          seen.add(tweet.id);
+          tweets.push(tweet);
+          if (tweets.length >= count) {
+            break;
+          }
+        }
+
+        if (!page.cursor || page.cursor === cursor || page.tweets.length === 0) {
+          break;
+        }
+        cursor = page.cursor;
+      }
+
+      return { success: true, tweets };
+    }
+  }
+
+  return TwitterClientSearch;
+}

src/lib/twitter-client-timelines.ts

@@ -0,0 +1,352 @@
+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 } from './twitter-client-types.js';
+import { parseTweetsFromInstructions } from './twitter-client-utils.js';
+
+export interface TwitterClientTimelineMethods {
+  getBookmarks(count?: number): Promise<SearchResult>;
+  getLikes(count?: number): Promise<SearchResult>;
+  getBookmarkFolderTimeline(folderId: string, count?: number): 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 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): Promise<SearchResult> {
+      const variables = {
+        count,
+        includePromotedContent: false,
+        withDownvotePerspective: false,
+        withReactionsMetadata: false,
+        withReactionsPerspective: false,
+      };
+
+      const features = buildBookmarksFeatures();
+
+      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.getBookmarksQueryIds();
+
+        for (const queryId of queryIds) {
+          const url = `${TWITTER_API_BASE}/${queryId}/Bookmarks?${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?: {
+                bookmark_timeline_v2?: {
+                  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?.bookmark_timeline_v2?.timeline?.instructions;
+            const tweets = parseTweetsFromInstructions(instructions, this.quoteDepth);
+
+            return { success: true as const, tweets, had404 };
+          } catch (error) {
+            lastError = error instanceof Error ? error.message : String(error);
+          }
+        }
+
+        return { success: false as const, error: lastError ?? 'Unknown error fetching bookmarks', had404 };
+      };
+
+      const firstAttempt = await tryOnce();
+      if (firstAttempt.success) {
+        return { success: true, tweets: firstAttempt.tweets };
+      }
+
+      if (firstAttempt.had404) {
+        await this.refreshQueryIds();
+        const secondAttempt = await tryOnce();
+        if (secondAttempt.success) {
+          return { success: true, tweets: secondAttempt.tweets };
+        }
+        return { success: false, error: secondAttempt.error };
+      }
+
+      return { success: false, error: firstAttempt.error };
+    }
+
+    /**
+     * Get the authenticated user's liked tweets
+     */
+    async getLikes(count = 20): Promise<SearchResult> {
+      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,
+        includePromotedContent: false,
+        withClientEventToken: false,
+        withBirdwatchNotes: false,
+        withVoice: true,
+      };
+
+      const features = buildLikesFeatures();
+
+      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.getLikesQueryIds();
+
+        for (const queryId of queryIds) {
+          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 }>;
+            };
+
+            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 tweets = parseTweetsFromInstructions(instructions, this.quoteDepth);
+
+            return { success: true as const, tweets, had404 };
+          } catch (error) {
+            lastError = error instanceof Error ? error.message : String(error);
+          }
+        }
+
+        return { success: false as const, error: lastError ?? 'Unknown error fetching likes', had404 };
+      };
+
+      const firstAttempt = await tryOnce();
+      if (firstAttempt.success) {
+        return { success: true, tweets: firstAttempt.tweets };
+      }
+
+      if (firstAttempt.had404) {
+        await this.refreshQueryIds();
+        const secondAttempt = await tryOnce();
+        if (secondAttempt.success) {
+          return { success: true, tweets: secondAttempt.tweets };
+        }
+        return { success: false, error: secondAttempt.error };
+      }
+
+      return { success: false, error: firstAttempt.error };
+    }
+
+    /**
+     * Get the authenticated user's bookmark folder timeline
+     */
+    async getBookmarkFolderTimeline(folderId: string, count = 20): Promise<SearchResult> {
+      const variablesWithCount = {
+        bookmark_collection_id: folderId,
+        includePromotedContent: true,
+        count,
+      };
+
+      const variablesWithoutCount = {
+        bookmark_collection_id: folderId,
+        includePromotedContent: true,
+      };
+
+      const features = buildBookmarksFeatures();
+
+      const tryOnce = async (variables: Record<string, unknown>) => {
+        let lastError: string | undefined;
+        let had404 = false;
+        const queryIds = await this.getBookmarkFolderQueryIds();
+
+        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 {
+            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}: ${text.slice(0, 200)}`, had404 };
+            }
+
+            const data = (await response.json()) as {
+              data?: {
+                bookmark_collection_timeline?: {
+                  timeline?: {
+                    instructions?: Array<{
+                      entries?: Array<{
+                        content?: {
+                          itemContent?: {
+                            tweet_results?: {
+                              result?: GraphqlTweetResult;
+                            };
+                          };
+                        };
+                      }>;
+                    }>;
+                  };
+                };
+              };
+              errors?: Array<{ message: string }>;
+            };
+
+            if (data.errors && data.errors.length > 0) {
+              return { success: false as const, error: data.errors.map((e) => e.message).join(', '), had404 };
+            }
+
+            const instructions = data.data?.bookmark_collection_timeline?.timeline?.instructions;
+            const tweets = parseTweetsFromInstructions(instructions, this.quoteDepth);
+
+            return { success: true as const, tweets, had404 };
+          } catch (error) {
+            lastError = error instanceof Error ? error.message : String(error);
+          }
+        }
+
+        return { success: false as const, error: lastError ?? 'Unknown error fetching bookmark folder', had404 };
+      };
+
+      let firstAttempt = await tryOnce(variablesWithCount);
+      if (!firstAttempt.success && firstAttempt.error?.includes('Variable "$count"')) {
+        firstAttempt = await tryOnce(variablesWithoutCount);
+      }
+      if (firstAttempt.success) {
+        return { success: true, tweets: firstAttempt.tweets };
+      }
+
+      if (firstAttempt.had404) {
+        await this.refreshQueryIds();
+        let secondAttempt = await tryOnce(variablesWithCount);
+        if (!secondAttempt.success && secondAttempt.error?.includes('Variable "$count"')) {
+          secondAttempt = await tryOnce(variablesWithoutCount);
+        }
+        if (secondAttempt.success) {
+          return { success: true, tweets: secondAttempt.tweets };
+        }
+        return { success: false, error: secondAttempt.error };
+      }
+
+      return { success: false, error: firstAttempt.error };
+    }
+  }
+
+  return TwitterClientTimelines;
+}

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

@@ -0,0 +1,337 @@
+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 } from './twitter-client-types.js';
+import {
+  extractArticleText,
+  findTweetInInstructions,
+  firstText,
+  mapTweetResult,
+  parseTweetsFromInstructions,
+} from './twitter-client-utils.js';
+
+export interface TwitterClientTweetDetailMethods {
+  getTweet(tweetId: string): Promise<GetTweetResult>;
+  getReplies(tweetId: string): Promise<SearchResult>;
+  getThread(tweetId: string): 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): 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,
+      };
+
+      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 params = new URLSearchParams({
+        variables: JSON.stringify(variables),
+        features: JSON.stringify(features),
+      });
+
+      try {
+        const parseResponse = async (response: Response) => {
+          if (!response.ok) {
+            const text = await response.text();
+            return { success: false as const, error: `HTTP ${response.status}: ${text.slice(0, 200)}` };
+          }
+
+          const data = (await response.json()) as {
+            data?: {
+              tweetResult?: { result?: GraphqlTweetResult };
+              threaded_conversation_with_injections_v2?: {
+                instructions?: Array<{
+                  entries?: Array<{
+                    content?: {
+                      itemContent?: {
+                        tweet_results?: {
+                          result?: GraphqlTweetResult;
+                        };
+                      };
+                    };
+                  }>;
+                }>;
+              };
+            };
+            errors?: Array<{ message: string; code?: number }>;
+          };
+
+          if (data.errors && data.errors.length > 0) {
+            return { success: false as const, error: data.errors.map((e) => e.message).join(', ') };
+          }
+
+          return { success: true as const, data: data.data ?? {} };
+        };
+
+        let lastError: string | undefined;
+        let had404 = false;
+
+        const tryOnce = async () => {
+          const queryIds = await this.getTweetDetailQueryIds();
+
+          for (const queryId of queryIds) {
+            const url = `${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): Promise<GetTweetResult> {
+      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, this.quoteDepth);
+      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): Promise<SearchResult> {
+      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, this.quoteDepth);
+      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): Promise<SearchResult> {
+      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, this.quoteDepth);
+
+      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 };
+    }
+  }
+
+  return TwitterClientTweetDetails;
+}

src/lib/twitter-client-types.ts

@@ -0,0 +1,251 @@
+import type { TwitterCookies } from './cookies.js';
+
+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;
+  };
+  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?: {
+    article_results?: {
+      result?: {
+        title?: 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 };
+            };
+          }>;
+        }>;
+      };
+    };
+    title?: 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 };
+        };
+      }>;
+    }>;
+  };
+  tweet?: GraphqlTweetResult;
+  quoted_status_result?: {
+    result?: GraphqlTweetResult;
+  };
+};
+
+export type TweetResult =
+  | {
+      success: true;
+      tweetId: string;
+    }
+  | {
+      success: false;
+      error: string;
+    };
+
+export interface UploadMediaResult {
+  success: boolean;
+  mediaId?: string;
+  error?: string;
+}
+
+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;
+}
+
+export interface GetTweetResult {
+  success: boolean;
+  tweet?: TweetData;
+  error?: string;
+}
+
+export interface SearchResult {
+  success: boolean;
+  tweets?: TweetData[];
+  error?: 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;
+}
+
+export interface TwitterClientOptions {
+  cookies: TwitterCookies;
+  userAgent?: string;
+  timeoutMs?: number;
+  // Max depth for quoted tweets (0 disables). Defaults to 1.
+  quoteDepth?: number;
+}
+
+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-users.ts

@@ -0,0 +1,507 @@
+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 } from './twitter-client-types.js';
+import { parseUsersFromInstructions } from './twitter-client-utils.js';
+
+export interface TwitterClientUserMethods {
+  getCurrentUser(): Promise<CurrentUserResult>;
+  getFollowing(userId: string, count?: number): Promise<FollowingResult>;
+  getFollowers(userId: string, count?: number): 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 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?: Array<{
+              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;
+            }>;
+          };
+
+          const users = (data.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);
+
+          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?: Array<{
+              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;
+            }>;
+          };
+
+          const users = (data.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);
+
+          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 ${response.status} (settings page)`;
+            continue;
+          }
+
+          const html = await response.text();
+          const usernameMatch = SETTINGS_SCREEN_NAME_REGEX.exec(html);
+          const idMatch = SETTINGS_USER_ID_REGEX.exec(html);
+          const nameMatch = SETTINGS_NAME_REGEX.exec(html);
+
+          const username = usernameMatch?.[1];
+          const userId = idMatch?.[1];
+          const name = nameMatch?.[1]?.replace(/\\"/g, '"');
+
+          if (username && userId) {
+            return {
+              success: true,
+              user: {
+                id: userId,
+                username,
+                name: name || username,
+              },
+            };
+          }
+
+          lastError = 'Could not parse settings page for user info';
+        } catch (error) {
+          lastError = error instanceof Error ? error.message : String(error);
+        }
+      }
+
+      return {
+        success: false,
+        error: lastError ?? 'Unknown error fetching current user',
+      };
+    }
+
+    /**
+     * Get users that a user is following
+     */
+    async getFollowing(userId: string, count = 20): Promise<FollowingResult> {
+      const variables = {
+        userId,
+        count,
+        includePromotedContent: false,
+      };
+
+      const features = buildFollowingFeatures();
+
+      const params = new URLSearchParams({
+        variables: JSON.stringify(variables),
+        features: JSON.stringify(features),
+      });
+
+      const tryOnce = async () => {
+        let lastError: string | undefined;
+        let had404 = false;
+        const queryIds = await this.getFollowingQueryIds();
+
+        for (const queryId of queryIds) {
+          const url = `${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);
+
+            return { success: true as const, users, 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 };
+      }
+
+      if (firstAttempt.had404) {
+        await this.refreshQueryIds();
+        const secondAttempt = await tryOnce();
+        if (secondAttempt.success) {
+          return { success: true, users: secondAttempt.users };
+        }
+
+        // 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).
+        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): Promise<FollowingResult> {
+      const variables = {
+        userId,
+        count,
+        includePromotedContent: false,
+      };
+
+      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);
+
+            return { success: true as const, users, 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 };
+      }
+
+      if (firstAttempt.had404) {
+        await this.refreshQueryIds();
+        const secondAttempt = await tryOnce();
+        if (secondAttempt.success) {
+          return { success: true, users: secondAttempt.users };
+        }
+
+        // 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).
+        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 +1,455 @@
+import type { GraphqlTweetResult, TweetData, 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;
+}
+
+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);
+  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 unwrapTweetResult(result: GraphqlTweetResult | undefined): GraphqlTweetResult | undefined {
+  if (!result) {
+    return undefined;
+  }
+  if (result.tweet) {
+    return result.tweet;
+  }
+  return result;
+}
+
+export function mapTweetResult(result: GraphqlTweetResult | undefined, quoteDepth: number): TweetData | undefined {
+  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 - 1);
+    }
+  }
+
+  return {
+    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,
+  };
+}
+
+export function findTweetInInstructions(
+  instructions:
+    | Array<{
+        entries?: Array<{
+          content?: {
+            itemContent?: {
+              tweet_results?: {
+                result?: GraphqlTweetResult;
+              };
+            };
+          };
+        }>;
+      }>
+    | undefined,
+  tweetId: string,
+) {
+  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 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,
+  quoteDepth: number,
+): TweetData[] {
+  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);
+        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

@@ -0,0 +1,193 @@
+import fs from 'node:fs';
+import path from 'node:path';
+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 {
+    const raw = fs.readFileSync(candidate, 'utf8');
+    const json = JSON.parse(raw) as { version?: unknown } | null;
+    if (json && typeof json.version === 'string' && json.version.trim().length > 0) {
+      return json.version.trim();
+    }
+    return null;
+  } catch {
+    return null;
+  }
+}
+
+function readVersionFromTextFile(candidate: string): string | null {
+  try {
+    const raw = fs.readFileSync(candidate, 'utf8').trim();
+    return raw.length > 0 ? raw : null;
+  } catch {
+    return null;
+  }
+}
+
+function resolveStartDir(importMetaUrl?: string): string {
+  if (typeof importMetaUrl === 'string' && importMetaUrl.trim().length > 0) {
+    try {
+      return path.dirname(fileURLToPath(importMetaUrl));
+    } catch {
+      // ignore
+    }
+  }
+
+  if (typeof __dirname === 'string' && __dirname.length > 0) {
+    return __dirname;
+  }
+
+  return process.cwd();
+}
+
+export function resolvePackageVersion(importMetaUrl?: string): string {
+  const injected =
+    typeof process !== 'undefined' && typeof process.env.BIRD_VERSION === 'string'
+      ? process.env.BIRD_VERSION.trim()
+      : '';
+  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;
+    }
+
+    const parent = path.dirname(dir);
+    if (parent === dir) {
+      break;
+    }
+    dir = parent;
+  }
+
+  return FALLBACK_VERSION;
+}
+
+function truncateSha(sha: string, length: number = 8): string {
+  const trimmed = sha.trim();
+  if (!trimmed) {
+    return '';
+  }
+  if (trimmed.length <= length) {
+    return trimmed;
+  }
+  return trimmed.slice(0, length);
+}
+
+function resolveGitShaFromGitDir(gitDir: string): string | null {
+  const headPath = path.join(gitDir, 'HEAD');
+  let head = '';
+  try {
+    head = fs.readFileSync(headPath, 'utf8').trim();
+  } catch {
+    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_PREFIX_REGEX, '').trim();
+  if (!ref) {
+    return null;
+  }
+
+  const refPath = path.join(gitDir, ref);
+  try {
+    const sha = truncateSha(fs.readFileSync(refPath, 'utf8'));
+    return sha.length > 0 ? sha : null;
+  } catch {
+    // fall through to packed-refs
+  }
+
+  const packedRefsPath = path.join(gitDir, 'packed-refs');
+  try {
+    const packed = fs.readFileSync(packedRefsPath, 'utf8');
+    const lines = packed.split(LINE_SPLIT_REGEX);
+    for (const line of lines) {
+      if (!line || line.startsWith('#') || line.startsWith('^')) {
+        continue;
+      }
+      const [shaRaw, refName] = line.split(' ');
+      if (refName?.trim() === ref) {
+        const sha = truncateSha(shaRaw ?? '');
+        return sha.length > 0 ? sha : null;
+      }
+    }
+  } catch {
+    // ignore
+  }
+
+  return null;
+}
+
+export function resolveGitSha(importMetaUrl?: string): string | null {
+  const injected =
+    typeof process !== 'undefined' && typeof process.env.BIRD_GIT_SHA === 'string'
+      ? process.env.BIRD_GIT_SHA.trim()
+      : '';
+  if (injected.length > 0) {
+    return truncateSha(injected);
+  }
+
+  let dir = resolveStartDir(importMetaUrl);
+  for (let i = 0; i < 10; i += 1) {
+    const dotGit = path.join(dir, '.git');
+    try {
+      const stat = fs.statSync(dotGit);
+      if (stat.isDirectory()) {
+        const sha = resolveGitShaFromGitDir(dotGit);
+        if (sha) {
+          return sha;
+        }
+      } else if (stat.isFile()) {
+        const txt = fs.readFileSync(dotGit, 'utf8');
+        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;
+          }
+        }
+      }
+    } catch {
+      // ignore
+    }
+
+    const parent = path.dirname(dir);
+    if (parent === dir) {
+      break;
+    }
+    dir = parent;
+  }
+
+  return null;
+}
+
+export function formatVersionLine(importMetaUrl?: string): string {
+  const version = resolvePackageVersion(importMetaUrl);
+  const sha = resolveGitSha(importMetaUrl);
+  return sha ? `${version} (${sha})` : version;
+}
+
+export function getCliVersion(): string {
+  return formatVersionLine(import.meta.url);
+}

tests/cli-args.test.ts

@@ -2,7 +2,23 @@ import { describe, expect, it } from 'vitest';
 import { looksLikeTweetInput, resolveCliInvocation } from '../src/lib/cli-args.js';
 
 describe('cli-args', () => {
-  const known = new Set(['tweet', 'reply', 'read', 'replies', 'thread', 'search', 'mentions', 'whoami', 'check']);
+  const known = new Set([
+    'tweet',
+    'reply',
+    'query-ids',
+    'read',
+    'replies',
+    'thread',
+    'search',
+    'mentions',
+    'bookmarks',
+    'following',
+    'followers',
+    'likes',
+    'help',
+    'whoami',
+    'check',
+  ]);
 
   it('detects tweet URLs', () => {
     expect(looksLikeTweetInput('https://x.com/user/status/1234567890')).toBe(true);
@@ -33,15 +49,8 @@ describe('cli-args', () => {
   });
 
   it('preserves leading options before inferred read command', () => {
-    const result = resolveCliInvocation(['--engine', 'sweetistics', 'https://x.com/user/status/1234567890'], known);
+    const result = resolveCliInvocation(['--plain', 'https://x.com/user/status/1234567890'], known);
-    expect(result.argv).toEqual([
+    expect(result.argv).toEqual(['node', 'bird', '--plain', 'read', 'https://x.com/user/status/1234567890']);
-      'node',
-      'bird',
-      '--engine',
-      'sweetistics',
-      'read',
-      'https://x.com/user/status/1234567890',
-    ]);
   });
 
   it('does not rewrite when a known command is provided', () => {

tests/cli.test.ts

@@ -1,4 +1,5 @@
 import { describe, expect, it } from 'vitest';
+import { extractBookmarkFolderId } from '../src/lib/extract-bookmark-folder-id.js';
 import { extractTweetId } from '../src/lib/extract-tweet-id.js';
 
 describe('CLI utilities', () => {
@@ -29,4 +30,30 @@ 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();
+    });
+  });
 });

tests/cookies.test.ts

@@ -1,30 +1,33 @@
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
 
-// Mock child_process.execSync to prevent actual shell commands
+type SweetCookieResult = { cookies: Array<{ name: string; value: string; domain?: string }>; warnings: string[] };
-vi.mock('node:child_process', () => ({
+
-  execSync: vi.fn(() => ''),
+const sweet = vi.hoisted(() => ({
+  results: new Map<string, SweetCookieResult>(),
+  options: new Map<string, { timeoutMs?: number }>(),
 }));
 
-// Mock fs to prevent actual file operations
+vi.mock('@steipete/sweet-cookie', () => ({
-vi.mock('node:fs', () => {
+  getCookies: vi.fn(async (options: { browsers?: string[]; timeoutMs?: number }) => {
-  const fs = vi.importActual<typeof import('node:fs')>('node:fs');
+    const browser = options.browsers?.[0] ?? 'unknown';
-  return {
+    sweet.options.set(browser, options);
-    ...fs,
+    return (
-    existsSync: vi.fn(() => false),
+      sweet.results.get(browser) ?? {
-    copyFileSync: vi.fn(),
+        cookies: [],
-    mkdtempSync: vi.fn(() => '/tmp/test-dir'),
+        warnings: [],
-    readdirSync: vi.fn(() => []),
+      }
-    rmSync: vi.fn(),
+    );
-  };
+  }),
-});
+}));
 
 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;
@@ -37,38 +40,71 @@ describe('cookies', () => {
   });
 
   describe('resolveCredentials', () => {
-    it('uses firefox when enabled and returns cookies', async () => {
+    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 result = await resolveCredentials({ cookieSource: 'firefox' });
-
-      // 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;
-      });
-      (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 result = await resolveCredentials({
-        allowFirefox: true,
-        allowChrome: false,
-        firefoxProfile: 'abc.default-release',
-      });
 
       expect(result.cookies.authToken).toBe('firefox_auth');
       expect(result.cookies.ct0).toBe('firefox_ct0');
       expect(result.cookies.source).toContain('Firefox');
     });
 
+    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 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');
+      expect(result.cookies.cookieHeader).toContain('ct0=safari_ct0');
+      expect(result.cookies.source).toBe('Safari');
+    });
+
+    it('uses firefox when enabled and returns cookies', async () => {
+      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({ cookieSource: 'firefox', firefoxProfile: 'abc.default-release' });
+
+      expect(result.cookies.authToken).toBe('firefox_auth');
+      expect(result.cookies.ct0).toBe('firefox_ct0');
+      expect(result.cookies.cookieHeader).toContain('auth_token=firefox_auth');
+      expect(result.cookies.cookieHeader).toContain('ct0=firefox_ct0');
+      expect(result.cookies.source).toContain('Firefox');
+    });
+
     it('should prioritize CLI arguments over env vars', async () => {
       process.env.AUTH_TOKEN = 'env_auth';
       process.env.CT0 = 'env_ct0';
@@ -81,6 +117,7 @@ describe('cookies', () => {
 
       expect(result.cookies.authToken).toBe('cli_auth');
       expect(result.cookies.ct0).toBe('cli_ct0');
+      expect(result.cookies.cookieHeader).toBe('auth_token=cli_auth; ct0=cli_ct0');
       expect(result.cookies.source).toBe('CLI argument');
     });
 
@@ -89,7 +126,7 @@ describe('cookies', () => {
       process.env.CT0 = 'test_ct0';
 
       const { resolveCredentials } = await import('../src/lib/cookies.js');
-      const result = await resolveCredentials({ allowFirefox: false, allowChrome: false });
+      const result = await resolveCredentials({ cookieSource: 'safari' });
 
       expect(result.cookies.authToken).toBe('test_auth_token');
       expect(result.cookies.ct0).toBe('test_ct0');
@@ -101,7 +138,7 @@ describe('cookies', () => {
       process.env.TWITTER_CT0 = 'twitter_ct0';
 
       const { resolveCredentials } = await import('../src/lib/cookies.js');
-      const result = await resolveCredentials({ allowFirefox: false, allowChrome: false });
+      const result = await resolveCredentials({ cookieSource: 'safari' });
 
       expect(result.cookies.authToken).toBe('twitter_auth');
       expect(result.cookies.ct0).toBe('twitter_ct0');
@@ -123,7 +160,7 @@ describe('cookies', () => {
       process.env.CT0 = '';
 
       const { resolveCredentials } = await import('../src/lib/cookies.js');
-      const result = await resolveCredentials({ allowFirefox: false, allowChrome: false });
+      const result = await resolveCredentials({ cookieSource: 'safari' });
 
       expect(result.cookies.authToken).toBeNull();
       expect(result.cookies.ct0).toBeNull();
@@ -132,50 +169,166 @@ describe('cookies', () => {
 
     it('should warn when credentials are missing', async () => {
       const { resolveCredentials } = await import('../src/lib/cookies.js');
-      const result = await resolveCredentials({ allowFirefox: false, allowChrome: false });
+      const result = await resolveCredentials({ cookieSource: 'safari' });
 
       expect(result.warnings).toContain(
-        'Missing auth_token - provide via --auth-token, AUTH_TOKEN env var, or login to x.com in Chrome/Firefox',
+        'Missing auth_token - provide via --auth-token, AUTH_TOKEN env var, or login to x.com in Safari/Chrome/Firefox',
       );
       expect(result.warnings).toContain(
-        'Missing ct0 - provide via --ct0, CT0 env var, or login to x.com in Chrome/Firefox',
+        'Missing ct0 - provide via --ct0, CT0 env var, or login to x.com in Safari/Chrome/Firefox',
       );
     });
 
     it('falls back to Chrome when enabled and Firefox disabled', async () => {
-      const fs = await import('node:fs');
+      sweet.results.set('chrome', {
-      const { execSync } = await import('node:child_process');
+        cookies: [
-      (fs.existsSync as unknown as vi.Mock).mockImplementation((path: string) => path.includes('Cookies'));
+          { name: 'auth_token', value: 'test_auth', domain: 'x.com' },
-      (fs.copyFileSync as unknown as vi.Mock).mockImplementation(() => {});
+          { name: 'ct0', value: 'test_ct0', domain: 'x.com' },
-      (execSync as unknown as vi.Mock).mockImplementation((cmd: string) => {
+        ],
-        if (cmd.includes('sqlite3')) {
+        warnings: [],
-          return 'auth_token|746573745f61757468\nct0|746573745f637430';
-        }
-        return '';
       });
 
       const { resolveCredentials } = await import('../src/lib/cookies.js');
-      const result = await resolveCredentials({ allowFirefox: false, allowChrome: true, 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', () => {
+    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();
+
+      expect(result.cookies.authToken).toBe('safari_auth');
+      expect(result.cookies.ct0).toBe('safari_ct0');
+      expect(result.cookies.source).toBe('Safari');
+    });
+
+    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: [],
+      });
+
+      const { resolveCredentials } = await import('../src/lib/cookies.js');
+      const result = await resolveCredentials({ cookieSource: ['safari', 'chrome'] });
+
+      expect(result.cookies.authToken).toBe('safari_auth');
+      expect(result.cookies.ct0).toBe('safari_ct0');
     });
   });
 
   describe('extractCookiesFromChrome', () => {
-    it('returns cookies when sqlite yields hex values', async () => {
+    it('returns cookies when Chrome yields values', async () => {
-      const fs = await import('node:fs');
+      sweet.results.set('chrome', {
-      const { execSync } = await import('node:child_process');
+        cookies: [
-      // Pretend Chrome cookie DB exists
+          { name: 'auth_token', value: 'test_auth', domain: 'x.com' },
-      (fs.existsSync as unknown as vi.Mock).mockImplementation((path: string) => path.includes('Cookies'));
+          { name: 'ct0', value: 'test_ct0', domain: 'x.com' },
-      (fs.copyFileSync as unknown as vi.Mock).mockImplementation(() => {});
+        ],
-      // sqlite output with hex strings ("test_auth", "test_ct0")
+        warnings: [],
-      (execSync as unknown as vi.Mock).mockImplementation((cmd: string) => {
-        if (cmd.includes('sqlite3')) {
-          return 'auth_token|746573745f61757468\nct0|746573745f637430';
-        }
-        return '';
       });
 
       const { extractCookiesFromChrome } = await import('../src/lib/cookies.js');
@@ -187,12 +340,8 @@ describe('cookies', () => {
       expect(result.warnings).toHaveLength(0);
     });
 
-    it('warns when Chrome DB exists but contains no cookies', async () => {
+    it('warns when Chrome returns no cookies', async () => {
-      const fs = await import('node:fs');
+      sweet.results.set('chrome', { cookies: [], warnings: [] });
-      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('');
 
       const { extractCookiesFromChrome } = await import('../src/lib/cookies.js');
       const result = await extractCookiesFromChrome('Default');
@@ -205,6 +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');
 
@@ -213,21 +367,8 @@ describe('cookies', () => {
       expect(result.warnings).toContain('Firefox cookies database not found.');
     });
 
-    it('warns when Firefox DB exists but contains no cookies', async () => {
+    it('warns when Firefox returns no cookies', async () => {
-      const fs = await import('node:fs');
+      sweet.results.set('firefox', { cookies: [], warnings: [] });
-      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('');
 
       const { extractCookiesFromFirefox } = await import('../src/lib/cookies.js');
       const result = await extractCookiesFromFirefox('abc.default-release');

tests/help-output.test.ts

@@ -0,0 +1,51 @@
+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');
+  });
+
+  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');
+  });
+});

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.test.ts

@@ -0,0 +1,290 @@
+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('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);
+  });
+});

tests/normalize-handle.test.ts

@@ -0,0 +1,43 @@
+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');
+  });
+
+  it('accepts @handle and trims whitespace', () => {
+    expect(normalizeHandle('  @steipete  ')).toBe('steipete');
+  });
+
+  it('rejects empty input', () => {
+    expect(normalizeHandle('')).toBeNull();
+    expect(normalizeHandle('   ')).toBeNull();
+    expect(normalizeHandle(null)).toBeNull();
+  });
+
+  it('rejects invalid characters and too-long handles', () => {
+    expect(normalizeHandle('@stei-pete')).toBeNull();
+    expect(normalizeHandle('@steipete!')).toBeNull();
+    expect(normalizeHandle('a'.repeat(16))).toBeNull();
+  });
+});
+
+describe('mentionsQueryFromUserOption', () => {
+  it('returns null query when option omitted', () => {
+    expect(mentionsQueryFromUserOption(undefined)).toEqual({ query: null, error: null });
+  });
+
+  it('returns normalized @query for valid handle', () => {
+    expect(mentionsQueryFromUserOption('@steipete')).toEqual({ query: '@steipete', error: null });
+    expect(mentionsQueryFromUserOption(' steipete ')).toEqual({ query: '@steipete', error: null });
+  });
+
+  it('returns error for invalid handle', () => {
+    const result = mentionsQueryFromUserOption('@stei-pete');
+    expect(result.query).toBeNull();
+    expect(result.error).toMatch(INVALID_HANDLE_REGEX);
+  });
+});

tests/output.test.ts

@@ -0,0 +1,75 @@
+import { describe, expect, it } from 'vitest';
+import {
+  formatStatsLine,
+  formatTweetUrlLine,
+  labelPrefix,
+  resolveOutputConfigFromArgv,
+  resolveOutputConfigFromCommander,
+  statusPrefix,
+} from '../src/lib/output.js';
+
+describe('output', () => {
+  it('defaults to emoji + color on TTY', () => {
+    const cfg = resolveOutputConfigFromArgv([], {}, true);
+    expect(cfg).toEqual({ plain: false, emoji: true, color: true });
+  });
+
+  it('plain disables emoji + color', () => {
+    const cfg = resolveOutputConfigFromArgv(['--plain'], {}, true);
+    expect(cfg).toEqual({ plain: true, emoji: false, color: false });
+    expect(statusPrefix('ok', cfg)).toBe('[ok] ');
+    expect(labelPrefix('url', cfg)).toBe('url: ');
+  });
+
+  it('NO_COLOR disables colors by default', () => {
+    const cfg = resolveOutputConfigFromArgv([], { NO_COLOR: '1' }, true);
+    expect(cfg.color).toBe(false);
+  });
+
+  it('TERM=dumb disables colors by default', () => {
+    const cfg = resolveOutputConfigFromArgv([], { TERM: 'dumb' }, true);
+    expect(cfg.color).toBe(false);
+  });
+
+  it('--no-color disables colors', () => {
+    const cfg = resolveOutputConfigFromArgv(['--no-color'], {}, true);
+    expect(cfg).toEqual({ plain: false, emoji: true, color: false });
+  });
+
+  it('--no-emoji switches to text prefixes', () => {
+    const cfg = resolveOutputConfigFromArgv(['--no-emoji'], {}, true);
+    expect(cfg.emoji).toBe(false);
+    expect(statusPrefix('warn', cfg)).toBe('Warning: ');
+  });
+
+  it('commander opts override defaults', () => {
+    const cfg = resolveOutputConfigFromCommander({ emoji: false, color: false }, {}, true);
+    expect(cfg).toEqual({ plain: false, emoji: false, color: false });
+    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 });
+  });
+
+  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(
+      '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');
+  });
+
+  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);
+  });
+});

tests/runtime-query-ids.test.ts

@@ -0,0 +1,143 @@
+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, vi } from 'vitest';
+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 () => {
+    const cacheDir = path.join(os.tmpdir(), `bird-test-${randomUUID()}`);
+    await mkdir(cacheDir, { recursive: true });
+    const cachePath = path.join(cacheDir, 'query-ids.json');
+
+    const html = `
+      <html>
+        <script src="https://abs.twimg.com/responsive-web/client-web/main.test.js"></script>
+      </html>
+    `;
+    const js = [
+      `e.exports={queryId:"AAA",operationName:"CreateTweet"}`,
+      `e.exports={queryId:"BBB",operationName:"CreateRetweet"}`,
+      `e.exports={queryId:"CCC",operationName:"FavoriteTweet"}`,
+      `e.exports={queryId:"DDD",operationName:"TweetDetail"}`,
+      `e.exports={queryId:"EEE",operationName:"SearchTimeline"}`,
+      `e.exports={queryId:"FFF",operationName:"UserArticlesTweets"}`,
+    ].join('\n');
+
+    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 });
+    });
+
+    vi.stubGlobal('fetch', fetchMock);
+
+    const store = createRuntimeQueryIdStore({
+      cachePath,
+      ttlMs: 1000,
+      fetchImpl: fetchMock as unknown as typeof fetch,
+    });
+    const info = await store.refresh(
+      ['CreateTweet', 'CreateRetweet', 'FavoriteTweet', 'TweetDetail', 'SearchTimeline', 'UserArticlesTweets'],
+      { force: true },
+    );
+
+    expect(info?.snapshot.ids.CreateTweet).toBe('AAA');
+    expect(info?.snapshot.ids.TweetDetail).toBe('DDD');
+    expect(info?.cachePath).toBe(cachePath);
+
+    const raw = await readFile(cachePath, 'utf8');
+    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/sweetistics-client.test.ts

@@ -1,277 +0,0 @@
-import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
-import { SweetisticsClient } from '../src/lib/sweetistics-client.js';
-
-describe('SweetisticsClient', () => {
-  const originalFetch = globalThis.fetch;
-
-  beforeEach(() => {
-    vi.resetAllMocks();
-  });
-
-  afterEach(() => {
-    globalThis.fetch = originalFetch;
-  });
-
-  it('posts tweet with bearer token and reply id', async () => {
-    const fetchMock = vi.fn().mockResolvedValue({
-      ok: true,
-      status: 200,
-      json: async () => ({ success: true, tweetId: '123' }),
-    });
-    globalThis.fetch = fetchMock as unknown as typeof fetch;
-
-    const client = new SweetisticsClient({ baseUrl: 'https://api.example.com', apiKey: 'sweet-test' });
-    const result = await client.tweet('hello world', '456');
-
-    expect(result.success).toBe(true);
-    expect(result.tweetId).toBe('123');
-
-    expect(fetchMock).toHaveBeenCalledTimes(1);
-    const [url, init] = fetchMock.mock.calls[0];
-    expect(url).toBe('https://api.example.com/api/actions/tweet');
-    expect((init as RequestInit).headers).toMatchObject({ authorization: 'Bearer sweet-test' });
-    expect(JSON.parse((init as RequestInit).body as string)).toEqual({ text: 'hello world', replyToTweetId: '456' });
-  });
-
-  it('returns error when API responds with failure', async () => {
-    const fetchMock = vi.fn().mockResolvedValue({
-      ok: false,
-      status: 401,
-      json: async () => ({ success: false, error: 'Unauthorized' }),
-    });
-    globalThis.fetch = fetchMock as unknown as typeof fetch;
-
-    const client = new SweetisticsClient({ baseUrl: 'https://api.example.com', apiKey: 'sweet-test' });
-    const result = await client.tweet('test');
-
-    expect(result.success).toBe(false);
-    expect(result.error).toContain('Unauthorized');
-  });
-
-  it('uploads media and passes mediaIds into tweet', async () => {
-    const fetchMock = vi
-      .fn()
-      // upload
-      .mockResolvedValueOnce({
-        ok: true,
-        status: 200,
-        json: async () => ({ mediaId: 'mid-1' }),
-      })
-      // tweet
-      .mockResolvedValueOnce({
-        ok: true,
-        status: 200,
-        json: async () => ({ success: true, tweetId: '789' }),
-      });
-    globalThis.fetch = fetchMock as unknown as typeof fetch;
-
-    const client = new SweetisticsClient({ baseUrl: 'https://api.example.com', apiKey: 'sweet-test' });
-    const uploadRes = await client.uploadMedia({ data: 'Zm9v', mimeType: 'image/png', alt: 'foo' });
-    expect(uploadRes.success).toBe(true);
-    expect(uploadRes.mediaId).toBe('mid-1');
-
-    const tweetRes = await client.tweet('hi', undefined, ['mid-1']);
-    expect(tweetRes.success).toBe(true);
-
-    // First call: upload; second call: tweet with mediaIds
-    const [, tweetInit] = fetchMock.mock.calls[1];
-    expect(JSON.parse((tweetInit as RequestInit).body as string)).toMatchObject({ mediaIds: ['mid-1'] });
-  });
-
-  it('reads a tweet', async () => {
-    const fetchMock = vi.fn().mockResolvedValue({
-      ok: true,
-      status: 200,
-      json: async () => ({
-        id: '1',
-        text: 'hi',
-        author: { username: 'u', name: 'User' },
-        metrics: { likeCount: 5 },
-      }),
-    });
-    globalThis.fetch = fetchMock as unknown as typeof fetch;
-
-    const client = new SweetisticsClient({ baseUrl: 'https://api.example.com', apiKey: 'sweet-test' });
-    const result = await client.read('1');
-
-    expect(result.success).toBe(true);
-    expect(result.tweet?.id).toBe('1');
-    const [url, init] = fetchMock.mock.calls[0];
-    expect(url).toBe('https://api.example.com/api/tweets/1');
-    expect((init as RequestInit).headers).toMatchObject({ authorization: 'Bearer sweet-test' });
-  });
-
-  it('fetches replies', async () => {
-    const conversationPayload = {
-      tweetIds: ['1', '2'],
-      tweets: {
-        1: {
-          id: '1',
-          text: 'root',
-          author: { username: 'root', name: 'Root' },
-          conversationId: 'c1',
-        },
-        2: {
-          id: '2',
-          text: 'reply',
-          author: { username: 'reply', name: 'Reply' },
-          conversationId: 'c1',
-          inReplyToStatusId: '1',
-        },
-      },
-    };
-
-    const fetchMock = vi.fn().mockResolvedValue({
-      ok: true,
-      status: 200,
-      json: async () => ({
-        result: { data: conversationPayload },
-      }),
-    });
-    globalThis.fetch = fetchMock as unknown as typeof fetch;
-
-    const client = new SweetisticsClient({ baseUrl: 'https://api.example.com', apiKey: 'sweet-test' });
-    const result = await client.replies('1');
-
-    expect(result.success).toBe(true);
-    expect(result.tweets?.[0].id).toBe('2');
-    const [url, init] = fetchMock.mock.calls[0];
-    expect(url).toContain('/api/trpc/tweets.getConversation');
-    const params = new URL(url as string).searchParams.get('input');
-    expect(params).toBe(JSON.stringify({ tweetId: '1', force: 'true' }));
-    expect((init as RequestInit).headers).toMatchObject({ authorization: 'Bearer sweet-test' });
-  });
-
-  it('fetches thread', async () => {
-    const conversationPayload = {
-      tweetIds: ['1', '2'],
-      tweets: {
-        1: { id: '1', text: 'root', author: { username: 'root', name: 'Root' }, conversationId: 'c1' },
-        2: { id: '2', text: 'reply', author: { username: 'reply', name: 'Reply' }, conversationId: 'c1' },
-      },
-    };
-
-    const fetchMock = vi.fn().mockResolvedValue({
-      ok: true,
-      status: 200,
-      json: async () => ({
-        result: { data: conversationPayload },
-      }),
-    });
-    globalThis.fetch = fetchMock as unknown as typeof fetch;
-
-    const client = new SweetisticsClient({ baseUrl: 'https://api.example.com', apiKey: 'sweet-test' });
-    const result = await client.thread('1');
-
-    expect(result.success).toBe(true);
-    expect(result.tweets?.length).toBe(2);
-    const [url, init] = fetchMock.mock.calls[0];
-    expect(url).toContain('/api/trpc/tweets.getConversation');
-    const params = new URL(url as string).searchParams.get('input');
-    expect(params).toBe(JSON.stringify({ tweetId: '1', force: 'true' }));
-    expect((init as RequestInit).headers).toMatchObject({ authorization: 'Bearer sweet-test' });
-  });
-
-  it('searches tweets', async () => {
-    const searchPayload = {
-      tweets: {
-        items: [
-          {
-            id: '3',
-            text: 'needle',
-            authorUsername: 'n',
-            authorName: 'Needle',
-            createdAt: '2024-01-01',
-            metrics: { replyCount: 1, retweetCount: 2, likeCount: 3 },
-          },
-        ],
-      },
-    };
-
-    const fetchMock = vi.fn().mockResolvedValue({
-      ok: true,
-      status: 200,
-      json: async () => [{ result: { data: searchPayload } }],
-    });
-    globalThis.fetch = fetchMock as unknown as typeof fetch;
-
-    const client = new SweetisticsClient({ baseUrl: 'https://api.example.com', apiKey: 'sweet-test' });
-    const result = await client.search('needle', 5);
-
-    expect(result.success).toBe(true);
-    expect(result.tweets?.[0].id).toBe('3');
-    const [url, init] = fetchMock.mock.calls[0];
-    expect(url).toContain('/api/trpc/search.execute');
-    expect((init as RequestInit).headers).toMatchObject({ authorization: 'Bearer sweet-test' });
-  });
-
-  it('fetches current user', async () => {
-    const fetchMock = vi.fn().mockResolvedValue({
-      ok: true,
-      status: 200,
-      json: async () => [{ result: { data: { json: { id: 'u1', username: 'tester', name: 'Test User' } } } }],
-    });
-    globalThis.fetch = fetchMock as unknown as typeof fetch;
-
-    const client = new SweetisticsClient({ baseUrl: 'https://api.example.com', apiKey: 'sweet-test' });
-    const result = await client.getCurrentUser();
-
-    expect(result.success).toBe(true);
-    expect(result.user?.id).toBe('u1');
-    expect(result.user?.username).toBe('tester');
-    const [url, init] = fetchMock.mock.calls[0];
-    expect(url).toBe('https://api.example.com/api/trpc/user.getCurrent?batch=1');
-    expect((init as RequestInit).headers).toMatchObject({ authorization: 'Bearer sweet-test' });
-  });
-
-  it('falls back to GET when POST is not allowed', async () => {
-    const fetchMock = vi
-      .fn()
-      .mockResolvedValueOnce({ ok: false, status: 405, json: async () => ({}) })
-      .mockResolvedValueOnce({
-        ok: true,
-        status: 200,
-        json: async () => ({ result: { data: { json: { id: 'u2', username: 'fallback' } } } }),
-      });
-
-    globalThis.fetch = fetchMock as unknown as typeof fetch;
-
-    const client = new SweetisticsClient({ baseUrl: 'https://api.example.com', apiKey: 'sweet-test' });
-    const result = await client.getCurrentUser();
-
-    expect(result.success).toBe(true);
-    expect(result.user?.id).toBe('u2');
-    expect(fetchMock).toHaveBeenCalledTimes(2);
-    expect(fetchMock.mock.calls[1][0]).toContain('input=null');
-  });
-
-  it('propagates Sweetistics user errors', async () => {
-    const fetchMock = vi.fn().mockResolvedValue({
-      ok: true,
-      status: 200,
-      json: async () => [{ result: { error: { message: 'bad key' } } }],
-    });
-    globalThis.fetch = fetchMock as unknown as typeof fetch;
-
-    const client = new SweetisticsClient({ baseUrl: 'https://api.example.com', apiKey: 'sweet-test' });
-    const result = await client.getCurrentUser();
-
-    expect(result.success).toBe(false);
-    expect(result.error).toBe('bad key');
-  });
-
-  it('propagates Sweetistics error message', async () => {
-    const fetchMock = vi.fn().mockResolvedValue({
-      ok: true,
-      status: 500,
-      json: async () => [{ error: { message: 'boom' } }],
-    });
-    globalThis.fetch = fetchMock as unknown as typeof fetch;
-
-    const client = new SweetisticsClient({ baseUrl: 'https://api.example.com', apiKey: 'sweet-test' });
-    const result = await client.search('needle', 1);
-
-    expect(result.success).toBe(false);
-    expect(result.error).toBe('boom');
-  });
-});

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

@@ -0,0 +1,423 @@
+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' }));
+      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).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 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 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' }));
+      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).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 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 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 +1,248 @@
+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('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.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 +1,17 @@
+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[]>;
+};

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-likes.test.ts

@@ -0,0 +1,379 @@
+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 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?');
+  });
+});
+
+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('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.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.media.test.ts

@@ -0,0 +1,104 @@
+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 uploadMedia', () => {
+  let mockFetch: ReturnType<typeof vi.fn>;
+
+  beforeEach(() => {
+    mockFetch = vi.fn();
+    global.fetch = mockFetch;
+  });
+
+  it('uploads an image and sets alt text', async () => {
+    mockFetch
+      .mockResolvedValueOnce({
+        ok: true,
+        json: async () => ({ media_id_string: '999' }),
+      })
+      .mockResolvedValueOnce({
+        ok: true,
+      })
+      .mockResolvedValueOnce({
+        ok: true,
+        json: async () => ({}),
+      })
+      .mockResolvedValueOnce({
+        ok: true,
+      });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const data = new Uint8Array([1, 2, 3, 4]);
+    const result = await client.uploadMedia({ data, mimeType: 'image/png', alt: 'alt text' });
+
+    expect(result.success).toBe(true);
+    expect(result.mediaId).toBe('999');
+    expect(mockFetch).toHaveBeenCalledTimes(4);
+
+    const [initUrl, initOptions] = mockFetch.mock.calls[0];
+    expect(String(initUrl)).toContain('upload.twitter.com');
+    expect(initOptions.method).toBe('POST');
+    expect(initOptions.body).toBeInstanceOf(URLSearchParams);
+    expect((initOptions.body as URLSearchParams).get('command')).toBe('INIT');
+    expect((initOptions.body as URLSearchParams).get('media_type')).toBe('image/png');
+
+    const [, appendOptions] = mockFetch.mock.calls[1];
+    expect(appendOptions.method).toBe('POST');
+    expect(appendOptions.body).toBeInstanceOf(FormData);
+    const appendBody = appendOptions.body as FormData;
+    expect(appendBody.get('command')).toBe('APPEND');
+    expect(appendBody.get('media_id')).toBe('999');
+    expect(appendBody.get('segment_index')).toBe('0');
+    expect(appendBody.get('media')).toBeInstanceOf(Blob);
+
+    const [, finalizeOptions] = mockFetch.mock.calls[2];
+    expect(finalizeOptions.body).toBeInstanceOf(URLSearchParams);
+    expect((finalizeOptions.body as URLSearchParams).get('command')).toBe('FINALIZE');
+    expect((finalizeOptions.body as URLSearchParams).get('media_id')).toBe('999');
+
+    const [metaUrl, metaOptions] = mockFetch.mock.calls[3];
+    expect(String(metaUrl)).toContain('/media/metadata/create.json');
+    expect(metaOptions.method).toBe('POST');
+    expect(JSON.parse(metaOptions.body)).toEqual({ media_id: '999', alt_text: { text: 'alt text' } });
+  });
+
+  it('uploads a video and polls processing status', async () => {
+    mockFetch
+      .mockResolvedValueOnce({
+        ok: true,
+        json: async () => ({ media_id_string: '777' }),
+      })
+      .mockResolvedValueOnce({
+        ok: true,
+      })
+      .mockResolvedValueOnce({
+        ok: true,
+        json: async () => ({ processing_info: { state: 'pending', check_after_secs: 0 } }),
+      })
+      .mockResolvedValueOnce({
+        ok: true,
+        json: async () => ({ processing_info: { state: 'succeeded' } }),
+      });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const data = new Uint8Array([1, 2, 3, 4, 5]);
+    const result = await client.uploadMedia({ data, mimeType: 'video/mp4', alt: 'ignored' });
+
+    expect(result.success).toBe(true);
+    expect(result.mediaId).toBe('777');
+    expect(mockFetch).toHaveBeenCalledTimes(4);
+
+    const [, finalizeOptions] = mockFetch.mock.calls[2];
+    expect((finalizeOptions.body as URLSearchParams).get('command')).toBe('FINALIZE');
+
+    const [statusUrl] = mockFetch.mock.calls[3];
+    expect(String(statusUrl)).toContain('command=STATUS');
+  });
+});

tests/twitter-client.search-bookmarks.test.ts

@@ -0,0 +1,562 @@
+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 search', () => {
+  let mockFetch: ReturnType<typeof vi.fn>;
+
+  beforeEach(() => {
+    mockFetch = vi.fn();
+    global.fetch = mockFetch as unknown as typeof fetch;
+  });
+
+  it('retries on 404 and posts search payload', async () => {
+    mockFetch
+      .mockResolvedValueOnce({
+        ok: false,
+        status: 404,
+        text: async () => '',
+      })
+      .mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => ({
+          data: {
+            search_by_raw_query: {
+              search_timeline: {
+                timeline: {
+                  instructions: [
+                    {
+                      entries: [
+                        {
+                          content: {
+                            itemContent: {
+                              tweet_results: {
+                                result: {
+                                  rest_id: '1',
+                                  legacy: {
+                                    full_text: 'found',
+                                    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' } },
+                                    },
+                                  },
+                                },
+                              },
+                            },
+                          },
+                        },
+                      ],
+                    },
+                  ],
+                },
+              },
+            },
+          },
+        }),
+      });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.search('needle', 1);
+
+    expect(result.success).toBe(true);
+    expect(result.tweets?.[0].id).toBe('1');
+    expect(mockFetch).toHaveBeenCalledTimes(2);
+
+    const [url, options] = mockFetch.mock.calls[1];
+    expect(options.method).toBe('POST');
+    const body = JSON.parse(options.body);
+    expect(body.features).toBeDefined();
+    expect(body.queryId).toBeDefined();
+    const urlVars = new URL(url as string).searchParams.get('variables');
+    expect(urlVars).toBeTruthy();
+    const parsed = JSON.parse(urlVars as string) as { rawQuery?: string };
+    expect(parsed.rawQuery).toBe('needle');
+  });
+
+  it('refreshes query IDs when all search endpoints 404', async () => {
+    mockFetch
+      .mockResolvedValueOnce({ ok: false, status: 404, text: async () => '' })
+      .mockResolvedValueOnce({ ok: false, status: 404, text: async () => '' })
+      .mockResolvedValueOnce({ ok: false, status: 404, text: async () => '' })
+      .mockResolvedValueOnce({ ok: false, status: 404, text: async () => '' })
+      .mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => ({
+          data: {
+            search_by_raw_query: {
+              search_timeline: {
+                timeline: {
+                  instructions: [],
+                },
+              },
+            },
+          },
+        }),
+      });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.search('hello', 5);
+
+    expect(result.success).toBe(true);
+    expect(mockFetch).toHaveBeenCalledTimes(5);
+  });
+
+  it('returns an unknown error when no query IDs are available', async () => {
+    const client = new TwitterClient({ cookies: validCookies });
+    (client as unknown as { getSearchTimelineQueryIds: () => Promise<string[]> }).getSearchTimelineQueryIds =
+      async () => [];
+
+    const result = await client.search('hello', 5);
+
+    expect(result.success).toBe(false);
+    expect(result.error).toContain('Unknown error fetching search results');
+    expect(mockFetch).not.toHaveBeenCalled();
+  });
+
+  it('paginates search results using the bottom cursor', async () => {
+    const makeSearchEntry = (id: string, text: string) => ({
+      content: {
+        itemContent: {
+          tweet_results: {
+            result: {
+              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: { legacy: { screen_name: 'root', name: 'Root' } },
+                },
+              },
+            },
+          },
+        },
+      },
+    });
+
+    const makeResponse = (ids: string[], cursor?: string) => ({
+      data: {
+        search_by_raw_query: {
+          search_timeline: {
+            timeline: {
+              instructions: [
+                {
+                  entries: [
+                    ...ids.map((id) => makeSearchEntry(id, `tweet-${id}`)),
+                    ...(cursor ? [{ content: { cursorType: 'Bottom', value: cursor } }] : []),
+                  ],
+                },
+              ],
+            },
+          },
+        },
+      },
+    });
+
+    mockFetch
+      .mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => makeResponse(['1', '2'], 'cursor-1'),
+      })
+      .mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => makeResponse(['2', '3']),
+      });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.search('needle', 3);
+
+    expect(result.success).toBe(true);
+    expect(result.tweets?.map((tweet) => tweet.id)).toEqual(['1', '2', '3']);
+    expect(mockFetch).toHaveBeenCalledTimes(2);
+
+    const firstVars = JSON.parse(
+      new URL(mockFetch.mock.calls[0][0] as string).searchParams.get('variables') as string,
+    ) as { cursor?: string };
+    const secondVars = JSON.parse(
+      new URL(mockFetch.mock.calls[1][0] as string).searchParams.get('variables') as string,
+    ) as { cursor?: string };
+
+    expect(firstVars.cursor).toBeUndefined();
+    expect(secondVars.cursor).toBe('cursor-1');
+  });
+
+  it('stops paginating when the cursor repeats', async () => {
+    const makeSearchEntry = (id: string) => ({
+      content: {
+        itemContent: {
+          tweet_results: {
+            result: {
+              rest_id: id,
+              legacy: {
+                full_text: `tweet-${id}`,
+                created_at: '2024-01-01T00:00:00Z',
+                reply_count: 0,
+                retweet_count: 0,
+                favorite_count: 0,
+                conversation_id_str: id,
+              },
+              core: {
+                user_results: {
+                  result: { legacy: { screen_name: 'root', name: 'Root' } },
+                },
+              },
+            },
+          },
+        },
+      },
+    });
+
+    const makeResponse = (ids: string[], cursor: string) => ({
+      data: {
+        search_by_raw_query: {
+          search_timeline: {
+            timeline: {
+              instructions: [
+                {
+                  entries: [
+                    ...ids.map((id) => makeSearchEntry(id)),
+                    { content: { cursorType: 'Bottom', value: cursor } },
+                  ],
+                },
+              ],
+            },
+          },
+        },
+      },
+    });
+
+    mockFetch
+      .mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => makeResponse(['1', '2'], 'same-cursor'),
+      })
+      .mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => makeResponse(['3'], 'same-cursor'),
+      });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.search('needle', 4);
+
+    expect(result.success).toBe(true);
+    expect(result.tweets?.map((tweet) => tweet.id)).toEqual(['1', '2', '3']);
+    expect(mockFetch).toHaveBeenCalledTimes(2);
+  });
+
+  it('stops paginating when the next page is empty', async () => {
+    const makeSearchEntry = (id: string) => ({
+      content: {
+        itemContent: {
+          tweet_results: {
+            result: {
+              rest_id: id,
+              legacy: {
+                full_text: `tweet-${id}`,
+                created_at: '2024-01-01T00:00:00Z',
+                reply_count: 0,
+                retweet_count: 0,
+                favorite_count: 0,
+                conversation_id_str: id,
+              },
+              core: {
+                user_results: {
+                  result: { legacy: { screen_name: 'root', name: 'Root' } },
+                },
+              },
+            },
+          },
+        },
+      },
+    });
+
+    mockFetch
+      .mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => ({
+          data: {
+            search_by_raw_query: {
+              search_timeline: {
+                timeline: {
+                  instructions: [
+                    {
+                      entries: [makeSearchEntry('1'), { content: { cursorType: 'Bottom', value: 'cursor-1' } }],
+                    },
+                  ],
+                },
+              },
+            },
+          },
+        }),
+      })
+      .mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => ({
+          data: {
+            search_by_raw_query: {
+              search_timeline: {
+                timeline: {
+                  instructions: [
+                    {
+                      entries: [{ content: { cursorType: 'Bottom', value: 'cursor-2' } }],
+                    },
+                  ],
+                },
+              },
+            },
+          },
+        }),
+      });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.search('needle', 3);
+
+    expect(result.success).toBe(true);
+    expect(result.tweets?.map((tweet) => tweet.id)).toEqual(['1']);
+    expect(mockFetch).toHaveBeenCalledTimes(2);
+  });
+});
+
+describe('TwitterClient bookmarks', () => {
+  let mockFetch: ReturnType<typeof vi.fn>;
+
+  beforeEach(() => {
+    mockFetch = vi.fn();
+    global.fetch = mockFetch as unknown as typeof fetch;
+  });
+
+  it('fetches bookmarks and parses tweet results', 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',
+                                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' },
+                                  },
+                                },
+                              },
+                            },
+                          },
+                        },
+                      },
+                    },
+                  ],
+                },
+              ],
+            },
+          },
+        },
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getBookmarks(2);
+
+    expect(result.success).toBe(true);
+    expect(result.tweets?.[0].id).toBe('1');
+    expect(mockFetch).toHaveBeenCalledTimes(1);
+
+    const [url, options] = mockFetch.mock.calls[0];
+    expect(options.method).toBe('GET');
+    expect(String(url)).toContain('/Bookmarks?');
+    const parsedVars = JSON.parse(new URL(url as string).searchParams.get('variables') as string);
+    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).toBe(true);
+  });
+});
+
+describe('TwitterClient bookmark folders', () => {
+  let mockFetch: ReturnType<typeof vi.fn>;
+
+  beforeEach(() => {
+    mockFetch = vi.fn();
+    global.fetch = mockFetch as unknown as typeof fetch;
+  });
+
+  it('fetches bookmark folder timeline and parses tweet results', 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',
+                                reply_count: 0,
+                                retweet_count: 0,
+                                favorite_count: 0,
+                                conversation_id_str: '9',
+                              },
+                              core: {
+                                user_results: {
+                                  result: {
+                                    rest_id: 'u9',
+                                    legacy: { screen_name: 'folder', name: 'Folder' },
+                                  },
+                                },
+                              },
+                            },
+                          },
+                        },
+                      },
+                    },
+                  ],
+                },
+              ],
+            },
+          },
+        },
+      }),
+    });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const result = await client.getBookmarkFolderTimeline('123', 2);
+
+    expect(result.success).toBe(true);
+    expect(result.tweets?.[0].id).toBe('9');
+    expect(mockFetch).toHaveBeenCalledTimes(1);
+
+    const [url, options] = mockFetch.mock.calls[0];
+    expect(options.method).toBe('GET');
+    expect(String(url)).toContain('/BookmarkFolderTimeline?');
+    const parsedVars = JSON.parse(new URL(url as string).searchParams.get('variables') as string);
+    expect(parsedVars.bookmark_collection_id).toBe('123');
+    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).toBe(true);
+  });
+
+  it('retries without count when API rejects the count variable', async () => {
+    mockFetch
+      .mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => ({
+          errors: [{ message: 'Variable "$count" is not defined by operation' }],
+        }),
+      })
+      .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',
+                                  reply_count: 0,
+                                  retweet_count: 0,
+                                  favorite_count: 0,
+                                  conversation_id_str: '9',
+                                },
+                                core: {
+                                  user_results: {
+                                    result: {
+                                      rest_id: 'u9',
+                                      legacy: { screen_name: 'folder', name: 'Folder' },
+                                    },
+                                  },
+                                },
+                              },
+                            },
+                          },
+                        },
+                      },
+                    ],
+                  },
+                ],
+              },
+            },
+          },
+        }),
+      });
+
+    const client = new TwitterClient({ cookies: validCookies });
+    const clientPrivate = client as TwitterClient & { getBookmarkFolderQueryIds: () => Promise<string[]> };
+    clientPrivate.getBookmarkFolderQueryIds = async () => ['test'];
+
+    const result = await client.getBookmarkFolderTimeline('123', 2);
+
+    expect(result.success).toBe(true);
+    expect(mockFetch).toHaveBeenCalledTimes(2);
+
+    const firstVars = JSON.parse(new URL(mockFetch.mock.calls[0][0] as string).searchParams.get('variables') as string);
+    const secondVars = JSON.parse(
+      new URL(mockFetch.mock.calls[1][0] as string).searchParams.get('variables') as string,
+    );
+
+    expect(firstVars.count).toBe(2);
+    expect(secondVars.count).toBeUndefined();
+  });
+});

tests/twitter-client.test.ts

@@ -1,795 +0,0 @@
-import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
-import { TwitterClient } from '../src/lib/twitter-client.js';
-
-describe('TwitterClient', () => {
-  const originalFetch = global.fetch;
-  const validCookies = {
-    authToken: 'test_auth_token',
-    ct0: 'test_ct0_token',
-    source: 'test',
-  };
-
-  afterEach(() => {
-    global.fetch = originalFetch;
-    vi.restoreAllMocks();
-  });
-
-  describe('constructor', () => {
-    it('should throw if authToken is missing', () => {
-      expect(
-        () =>
-          new TwitterClient({
-            cookies: { authToken: null, ct0: 'test', 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, 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('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!');
-    });
-
-    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('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('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');
-    });
-  });
-
-  describe('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.mockResolvedValueOnce({
-        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.');
-    });
-  });
-
-  describe('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);
-    });
-  });
-
-  describe('search', () => {
-    let mockFetch: ReturnType<typeof vi.fn>;
-
-    beforeEach(() => {
-      mockFetch = vi.fn();
-      global.fetch = mockFetch as unknown as typeof fetch;
-    });
-
-    it('retries on 404 and posts search payload', async () => {
-      mockFetch
-        .mockResolvedValueOnce({
-          ok: false,
-          status: 404,
-          text: async () => '',
-        })
-        .mockResolvedValueOnce({
-          ok: true,
-          status: 200,
-          json: async () => ({
-            data: {
-              search_by_raw_query: {
-                search_timeline: {
-                  timeline: {
-                    instructions: [
-                      {
-                        entries: [
-                          {
-                            content: {
-                              itemContent: {
-                                tweet_results: {
-                                  result: {
-                                    rest_id: '1',
-                                    legacy: {
-                                      full_text: 'found',
-                                      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' } },
-                                      },
-                                    },
-                                  },
-                                },
-                              },
-                            },
-                          },
-                        ],
-                      },
-                    ],
-                  },
-                },
-              },
-            },
-          }),
-        });
-
-      const client = new TwitterClient({ cookies: validCookies });
-      const result = await client.search('needle', 1);
-
-      expect(result.success).toBe(true);
-      expect(result.tweets?.[0].id).toBe('1');
-      expect(mockFetch).toHaveBeenCalledTimes(2);
-
-      const [url, options] = mockFetch.mock.calls[1];
-      expect(options.method).toBe('POST');
-      const body = JSON.parse(options.body);
-      expect(body.features).toBeDefined();
-      expect(body.queryId).toBeDefined();
-      const urlVars = new URL(url as string).searchParams.get('variables');
-      expect(urlVars).toBeTruthy();
-      const parsed = JSON.parse(urlVars as string) as { rawQuery?: string };
-      expect(parsed.rawQuery).toBe('needle');
-    });
-  });
-
-  describe('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/version.test.ts

@@ -0,0 +1,187 @@
+import fs from 'node:fs';
+import os from 'node:os';
+import path from 'node:path';
+import { fileURLToPath, pathToFileURL } from 'node:url';
+import { afterEach, describe, expect, it } from 'vitest';
+import {
+  FALLBACK_VERSION,
+  formatVersionLine,
+  getCliVersion,
+  resolveGitSha,
+  resolvePackageVersion,
+} from '../src/lib/version.js';
+
+function withTempDir<T>(fn: (dir: string) => T): T {
+  const dir = fs.mkdtempSync(path.join(os.tmpdir(), 'bird-version-test-'));
+  try {
+    return fn(dir);
+  } finally {
+    fs.rmSync(dir, { recursive: true, force: true });
+  }
+}
+
+describe('getCliVersion', () => {
+  afterEach(() => {
+    delete process.env.BIRD_VERSION;
+    delete process.env.BIRD_GIT_SHA;
+  });
+
+  it('reads package.json version when available', () => {
+    const raw = fs.readFileSync(fileURLToPath(new URL('../package.json', import.meta.url)), 'utf8');
+    const pkg = JSON.parse(raw) as { version?: unknown };
+    expect(resolvePackageVersion()).toBe(pkg.version);
+  });
+
+  it('formats injected version + sha', () => {
+    process.env.BIRD_VERSION = '9.9.9';
+    process.env.BIRD_GIT_SHA = 'abcdef123456';
+    expect(formatVersionLine('not a url')).toBe('9.9.9 (abcdef12)');
+  });
+
+  it('resolves package.json version from importMetaUrl root', () => {
+    withTempDir((dir) => {
+      fs.writeFileSync(path.join(dir, 'package.json'), JSON.stringify({ version: '1.2.3' }));
+      const entry = path.join(dir, 'src', 'entry.ts');
+      fs.mkdirSync(path.dirname(entry), { recursive: true });
+      fs.writeFileSync(entry, '// noop');
+
+      expect(resolvePackageVersion(pathToFileURL(entry).href)).toBe('1.2.3');
+    });
+  });
+
+  it('falls back to VERSION file when package.json missing', () => {
+    withTempDir((dir) => {
+      fs.writeFileSync(path.join(dir, 'VERSION'), '2.0.0\n');
+      const entry = path.join(dir, 'entry.ts');
+      fs.writeFileSync(entry, '// noop');
+
+      expect(resolvePackageVersion(pathToFileURL(entry).href)).toBe('2.0.0');
+    });
+  });
+
+  it('falls back to VERSION file when package.json has no version', () => {
+    withTempDir((dir) => {
+      fs.writeFileSync(path.join(dir, 'package.json'), JSON.stringify({}));
+      fs.writeFileSync(path.join(dir, 'VERSION'), '5.5.5\n');
+      const entry = path.join(dir, 'entry.ts');
+      fs.writeFileSync(entry, '// noop');
+
+      expect(resolvePackageVersion(pathToFileURL(entry).href)).toBe('5.5.5');
+    });
+  });
+
+  it('falls back to unknown when no version files exist', () => {
+    withTempDir((dir) => {
+      const entry = path.join(dir, 'a', 'b', 'c', 'entry.ts');
+      fs.mkdirSync(path.dirname(entry), { recursive: true });
+      fs.writeFileSync(entry, '// noop');
+
+      expect(resolvePackageVersion(pathToFileURL(entry).href)).toBe(FALLBACK_VERSION);
+    });
+  });
+
+  it('returns null when git HEAD is missing', () => {
+    withTempDir((dir) => {
+      const gitDir = path.join(dir, '.git');
+      fs.mkdirSync(gitDir, { recursive: true });
+
+      const entry = path.join(dir, 'entry.ts');
+      fs.writeFileSync(entry, '// noop');
+
+      expect(resolveGitSha(pathToFileURL(entry).href)).toBeNull();
+    });
+  });
+
+  it('returns null when git ref cannot be resolved', () => {
+    withTempDir((dir) => {
+      const gitDir = path.join(dir, '.git');
+      fs.mkdirSync(gitDir, { recursive: true });
+      fs.writeFileSync(path.join(gitDir, 'HEAD'), 'ref: refs/heads/main\n');
+
+      const entry = path.join(dir, 'entry.ts');
+      fs.writeFileSync(entry, '// noop');
+
+      expect(resolveGitSha(pathToFileURL(entry).href)).toBeNull();
+    });
+  });
+
+  it('resolves git sha from .git directory HEAD', () => {
+    withTempDir((dir) => {
+      const gitDir = path.join(dir, '.git');
+      fs.mkdirSync(gitDir, { recursive: true });
+      fs.writeFileSync(path.join(gitDir, 'HEAD'), '0123456789abcdef0123456789abcdef01234567\n');
+
+      const entry = path.join(dir, 'entry.ts');
+      fs.writeFileSync(entry, '// noop');
+
+      expect(resolveGitSha(pathToFileURL(entry).href)).toBe('01234567');
+    });
+  });
+
+  it('resolves git sha from ref file and packed-refs', () => {
+    withTempDir((dir) => {
+      const gitDir = path.join(dir, '.git');
+      fs.mkdirSync(path.join(gitDir, 'refs', 'heads'), { recursive: true });
+      fs.writeFileSync(path.join(gitDir, 'HEAD'), 'ref: refs/heads/main\n');
+      fs.writeFileSync(path.join(gitDir, 'refs', 'heads', 'main'), 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n');
+
+      const entry = path.join(dir, 'entry.ts');
+      fs.writeFileSync(entry, '// noop');
+
+      expect(resolveGitSha(pathToFileURL(entry).href)).toBe('aaaaaaaa');
+
+      fs.rmSync(path.join(gitDir, 'refs', 'heads', 'main'), { force: true });
+      fs.writeFileSync(
+        path.join(gitDir, 'packed-refs'),
+        ['# pack-refs with: peeled fully-peeled', 'bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb refs/heads/main', ''].join(
+          '\n',
+        ),
+      );
+      expect(resolveGitSha(pathToFileURL(entry).href)).toBe('bbbbbbbb');
+    });
+  });
+
+  it('resolves git sha from .git file gitdir pointer', () => {
+    withTempDir((dir) => {
+      const realGitDir = path.join(dir, '.realgit');
+      fs.mkdirSync(realGitDir, { recursive: true });
+      fs.writeFileSync(path.join(realGitDir, 'HEAD'), 'cccccccccccccccccccccccccccccccccccccccc\n');
+      fs.writeFileSync(path.join(dir, '.git'), 'gitdir: .realgit\n');
+
+      const entry = path.join(dir, 'entry.ts');
+      fs.writeFileSync(entry, '// noop');
+
+      expect(resolveGitSha(pathToFileURL(entry).href)).toBe('cccccccc');
+    });
+  });
+
+  it('returns null when no git directory exists', () => {
+    withTempDir((dir) => {
+      const entry = path.join(dir, 'nested', 'entry.ts');
+      fs.mkdirSync(path.dirname(entry), { recursive: true });
+      fs.writeFileSync(entry, '// noop');
+
+      expect(resolveGitSha(pathToFileURL(entry).href)).toBeNull();
+    });
+  });
+
+  it('formats version line with version + sha when both available', () => {
+    withTempDir((dir) => {
+      fs.writeFileSync(path.join(dir, 'package.json'), JSON.stringify({ version: '3.3.3' }));
+      const gitDir = path.join(dir, '.git');
+      fs.mkdirSync(gitDir, { recursive: true });
+      fs.writeFileSync(path.join(gitDir, 'HEAD'), 'dddddddddddddddddddddddddddddddddddddddd\n');
+
+      const entry = path.join(dir, 'entry.ts');
+      fs.writeFileSync(entry, '// noop');
+
+      expect(formatVersionLine(pathToFileURL(entry).href)).toBe('3.3.3 (dddddddd)');
+    });
+  });
+
+  it('returns a CLI version string', () => {
+    const value = getCliVersion();
+    expect(typeof value).toBe('string');
+    expect(value.length).toBeGreaterThan(0);
+  });
+});

tsconfig.oxlint.json

@@ -0,0 +1,9 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "noEmit": true,
+    "rootDir": "."
+  },
+  "include": ["src/**/*.ts", "tests/**/*.ts", "scripts/**/*.ts"],
+  "exclude": ["node_modules", "dist", "coverage"]
+}

vitest.config.ts

@@ -9,7 +9,13 @@ export default defineConfig({
       provider: 'v8',
       reporter: ['text', 'html'],
       include: ['src/**/*.ts'],
-      exclude: ['src/index.ts'],
+      exclude: ['src/cli.ts'],
+      thresholds: {
+        statements: 90,
+        branches: 80,
+        functions: 90,
+        lines: 90,
+      },
     },
   },
 });