feat: add --json-full flag to include raw API response in _raw field

Add a new --json-full flag to tweet-fetching commands that outputs JSON
with an additional _raw field containing the full GraphQL response.

This provides power users access to additional data not exposed in the
curated TweetData interface (media, entities, hashtags, cards, etc.)
while maintaining backward compatibility with --json.

Supported commands:
- read, replies, thread (TweetDetail API)
- search, mentions (SearchTimeline API)
- bookmarks (Bookmarks API)
- likes (Likes API)

Not supported: following, followers (uses mixed GraphQL/REST fallback
with different response structures)

Implementation:
- Add _raw?: GraphqlTweetResult optional field to TweetData type
- Add includeRaw option to mapTweetResult() and parseTweetsFromInstructions()
- Add TweetFetchOptions, SearchFetchOptions, TimelineFetchOptions interfaces
- Update client methods to accept options parameter
- Add --json-full flag to CLI commands
- Update help text to document the new flag
- Add comprehensive test coverage (16 tests)

Co-authored-by: Christian Catalan <[email protected]>

tests/help-output.test.ts

@@ -21,6 +21,8 @@ describe('root help output', () => {
 
     expect(help).toContain('bird <tweet-id-or-url>');
     expect(help).toContain('--json');
+    expect(help).toContain('--json-full');
+    expect(help).toContain('_raw');
   });
 
   it('shows global options in subcommand help', () => {
@@ -48,4 +50,51 @@ describe('root help output', () => {
     expect(help).toContain('--timeout');
     expect(help).toContain('--quote-depth');
   });
+
+  it('shows --json-full option in read command help', () => {
+    const ctx = createCliContext([]);
+    const program = createProgram(ctx);
+    const cmd = program.commands.find((c) => c.name() === 'read');
+    if (!cmd) {
+      throw new Error('Expected "read" command to be registered');
+    }
+
+    let help = '';
+    const output = {
+      writeOut: (s) => {
+        help += s;
+      },
+      writeErr: () => {},
+    };
+    program.configureOutput(output);
+    cmd.configureOutput(output);
+
+    cmd.outputHelp();
+
+    expect(help).toContain('--json-full');
+    expect(help).toContain('_raw');
+  });
+
+  it('shows --json-full option in search command help', () => {
+    const ctx = createCliContext([]);
+    const program = createProgram(ctx);
+    const cmd = program.commands.find((c) => c.name() === 'search');
+    if (!cmd) {
+      throw new Error('Expected "search" command to be registered');
+    }
+
+    let help = '';
+    const output = {
+      writeOut: (s) => {
+        help += s;
+      },
+      writeErr: () => {},
+    };
+    program.configureOutput(output);
+    cmd.configureOutput(output);
+
+    cmd.outputHelp();
+
+    expect(help).toContain('--json-full');
+  });
 });