Handle PR Comments

Evaluate review comments on the PR (from the current branch, or a PR number/URL if given). For each unresolved comment: summarize the feedback, suggest a resolution, ask the user how to resolve it, apply their choice, commit if needed, and resolve the thread.

1. Find the PR. Use the given number/URL, else derive it from the current branch (gh pr view). Stop if no PR exists.

2. Fetch unresolved review threads via the GraphQL reviewThreads field on the pull request — request each thread's id, isResolved, isOutdated, path, line, and comments. Filter to isResolved == false. (Use GraphQL, not REST: only it exposes thread ids and resolution state.)

3. Loop one comment at a time. For each: (a) summarize the feedback + file/line, reading surrounding code; (b) suggest a concrete fix; (c) ask via AskQuestion with options — apply suggested fix / apply a different fix / reply only / skip; (d) apply the choice; (e) if applicable, summarize what was changed and ask whether to commit; (f) resolve the thread via the GraphQL resolveReviewThread mutation.

4. Report an overview of what was changed, committed, replied to, skipped, and resolved. Include links.

Notes

• Handle real-user comments before addressing AI agents' (Copilot, CodeRabbit).
• Group duplicate comments; when the same/similar issue is mentioned multiple times, handle them all at once.
• Make a separate commit for each change.