Re-runnable pre-PR quality gate for the current branch. Composes two existing passes over the branch diff: a broad pr-reviewer pass (read-only review via the branch's open PR, which `pr-reviewer` requires) and a code-quality simplify pass (applies Class M mechanical refactors behind a confidence ≥ 90 % gate, reverting on failure). Run bare for the full review + simplify works; scope it with `review`, `simplify`, or the light `quick` mechanical pass. Commits each pass separately for traceability (`--no-commit` to skip). Use standalone any time mid-development to clean a branch. Note that `/create-pr` delegates its quality step to `review-loop` (the bounded convergence loop) post-draft, and the `review-loop` skill calls only `polish simplify` — never full `polish`. Triggers on "polish my branch", "clean this up before the PR", "review and simplify", "tidy up", "prep my branch", "/polish".