git-merge-prlisted

# Merge the PR Take an accepted, merge-ready PR across the finish line. Deliberately non-diagnostic: it fixes nothing - if any guard fails it STOPS and names the companion skill. Fail-fast applies to every step: an error, an unexpected state, or `gh` opening an interactive prompt means stop, surface the exact output, act no further. ## Guards (STOP on any failure) 1. `git branch --show-current` - never a protected branch. 2. `git status --short` prints nothing - never merge with uncommitted local work. 3. `git rev-parse HEAD` equals `git rev-parse @{u}` - the reviewed commit must equal local HEAD; unpushed work goes through `git-commit-push` first. 4. Open PR for THIS branch: `gh pr list --head <branch> --state open --json number,headRefName --jq '.[0]'`. An explicit pr-number argument must have `headRefName == <current branch>` - otherwise refuse: never merge a PR that is not the current branch's. 5. CI green on HEAD (latest-SHA filter, same probe as `git-finalize-pr`) - red or pending: hand off to `git-finalize-pr`. 6. Zero unresolved review threads (GraphQL `reviewThreads.isResolved`) - unresolved: hand off to `git-review-pr-comments`. 7. `gh pr view <pr> --json mergeable,mergeStateStatus,reviewDecision` - `CONFLICTING`: the profile `conflict_skill` (default `git-resolve-conflicts`); `BLOCKED` / `BEHIND`: report and stop. ## Steps 1. Merge per profile `merge_method` (default squash): `gh pr merge <pr> --squash` (or `--merge` / `--rebase`). Delete the remote branch per