What problem does it solve? Merging pull requests manually risks racing stale heads, losing contributor attribution, or leaving stale worktrees behind. This Skill enforces a deterministic squash-merge workflow that verifies the prepared head SHA, required checks, and branch freshness before merging. ## Core Features & Use Cases - Deterministic Squash Merge: Uses gh pr merge --squash --match-head-commit to guarantee the merged head matches the prepared SHA from /prepare-pr. - Attribution Metadata: Builds a merge body with Co-authored-by and Reviewed-by trailers, with a one-time fallback retry on author-email validation errors. - State Verification & Cleanup: Polls until the PR reaches MERGED state, records the merge SHA, posts a confirmation comment, and removes the worktree only after success. - Use Case: After running /review-pr and /prepare-pr on a contributor's PR, invoke this Skill to land it on main with verified checks, proper attribution, and automatic worktree cleanup. ## Quick Start Ask the agent to merge PR number 123 using the merge-pr workflow after preparation is complete.