cleanup-gitlisted

# Cleanup Git Clean local git branches and worktrees after work has merged. Dry-run first. Destructive commands require user approval. Prefer a repo-local `scripts/cleanup-git.sh` when the target repo ships one. If it does not, use the bundled skill script from this skill's `scripts/` directory. Do not improvise destructive cleanup commands outside the script workflow. ## Command Run from anywhere inside a repository: ```bash scripts/cleanup-git.sh scripts/cleanup-git.sh --apply scripts/cleanup-git.sh --apply --force scripts/cleanup-git.sh --base <ref> ``` ## Branch Detection The script fetches/prunes remotes, then chooses the comparison branch: 1. Remote default branch from `refs/remotes/<remote>/HEAD`. 2. Local `main`, `master`, `trunk`, `develop`, or `dev`. 3. Remote `<remote>/{main,master,trunk,develop,dev}`. Use `--base <ref>` only for unusual repositories. ## What It Removes - Worktrees whose branch has a GitHub PR in `MERGED` state, is merged into the detected base branch, or whose upstream is gone. - Local branches with the same criteria. When `gh` is available, PR `MERGED` state is the source of truth for squash/rebase merges. Do not miss those just because `git merge-base --is-ancestor` fails after history rewrite. If no PR is found, or `gh` is unavailable, fall back to the git-based checks. ## Guards Hard guards: - Skip the current worktree. - Skip the current branch. - Skip the detected base branch and common long-lived branches: `main`, `master`, `