cmd-fix-pr-review

Determine the current PR number. Create a git worktree at .trees/pr-<number>-review for the PR branch.

Fetch pending review comments using gh pr view and gh api for review threads.

For each unresolved comment:

1. Read the comment context and referenced code
2. Apply the requested change in the worktree
3. Commit with message referencing the review comment
4. Resolve the thread if possible via gh api

After all comments are addressed, spawn 3 parallel review subagents on the full diff:

1. Code quality reviewer — correctness, patterns, regressions
2. Business logic reviewer — requirements alignment, edge cases
3. Security reviewer — vulnerabilities, input validation

Aggregate findings. If any reviewer flags issues:

1. Fix flagged issues in the worktree
2. Re-run the review team (max 3 iterations)