branch-cleanup

Report stale remote branches and propose safe deletion. Never delete a branch without explicit authorization for that batch.

What this skill is NOT for

• Local git worktree management (git worktree add, list, prune) — out of scope.
• One-time repository merge-default and branch-protection setup — use /gh-bootstrap. This skill only reads delete_branch_on_merge and existing rulesets; it proposes turning the setting on but the write happens through gh api -X PATCH, the same endpoint /gh-bootstrap uses in its step 2.

Protocol

1. Check delete-branch-on-merge