Pr Cleaner Master

IRON LAW: NEVER POST A COMMENT, APPROVE, OR MERGE A PR WITHOUT SHOWING THE EXACT CONTENT TO THE USER AND GETTING EXPLICIT CONFIRMATION FIRST. NEVER PASTE CODE SNIPPETS TO CONTRIBUTORS — pasting code to a contributor is condescending. The only exception is a fix-and-merge row where the user has explicitly asked for a suggested fix in the current turn.

PR Cleaner Master

Maintainer's daily sweep over open PRs. The goal is "inbox zero for PRs": scan all open PRs in seconds, classify each, and surface only the ones that need you today. Unchanged PRs since the last sweep are folded away.

This skill does NOT do deep single-PR review — for that, use pr-eval. This skill does NOT merge PRs automatically — merge is a manual step you take after seeing the verdict, or invoke pr-merge-runner to land snapshot merge rows hands-off.

Use the loaded skill base directory as SKILL_DIR when referencing bundled files (e.g. references/reply-templates.md).

Argument Parsing

Resolve target repo:

1. If --repo given → use it.
2. Else → gh repo view --json nameWithOwner --jq .nameWithOwner.
3. If neither works → error: "Not in a GitHub repo. Pass --repo owner/repo."

Phase 0: Snapshot Load ⛔ BLOCKING

• Compute snapshot path: ~/.claude/projects/<project-dir-slug>/pr-cleaner-state.json
  • <project-dir-slug> is the same slug used by the memory system for the current project root (e.g. -Users-x-git-clawwork--bare).
• If the file exists, load it. If not, treat as {}.
• Snapshot shape:

  {
    "repo": "owner/repo",
    "lastSweep": "2026-04-13T14:32:00Z",
    "prs": {
      "123": {"headSha": "abc...", "comments": 2, "verdict": "merge", "at": "2026-04-13T14:32:00Z"}
    }
  }
  

• If snapshot repo differs from target repo, treat as empty. One snapshot per repo — do not mix.
• If --fresh, skip loading and treat as empty.

Phase 1: Batch Fetch ⛔ BLOCKING

One command gets the batch metadata for a full sweep. Do NOT loop per-PR in this phase unless the user explicitly passed PR numbers. Before selecting fields, verify gh pr list --help and request only fields listed under JSON FIELDS. If a field is not exposed by the installed gh, omit it and use the fallback behavior below; never pretend unsupported fields exist.

gh pr list --repo <repo> --state open --limit 100 --json \
  number,title,author,headRefOid,mergeable,mergeStateStatus,\
state,isDraft,reviewDecision,labels,updatedAt,additions,deletions,changedFiles,\
statusCheckRollup,latestReviews,reviews,comments

If the user passed one or more PR numbers, fetch exactly those PRs instead of listing all open PRs. A bare number such as 123 is equivalent to #123.

gh pr view <number> --repo <repo> --json \
  number,title,author,headRefOid,mergeable,mergeStateStatus,\
state,isDraft,reviewDecision,labels,updatedAt,additions,deletions,changedFiles,\
statusCheckRollup,latestReviews,reviews,comments

For multiple explicit PR numbers, repeat gh pr view only for those requested numbers and combine the results into the same in-memory list shape used by the full sweep.

• If gh is not authenticated → error with gh auth login hint.
• If a requested PR does not exist or is not open → report that PR and do not fabricate a row for it.
• If no open PRs in a full sweep → print No open PRs in <repo>. Nothing to sweep. and exit.
• authorAssociation is not available in all gh pr list versions. If it is unavailable, do not display a *first-time* marker. Do not infer it from author age, commit count, or prior local snapshots.
• Also fetch the PR template once (best effort, non-blocking):

  gh api "repos/<repo>/contents/.github/pull_request_template.md" 2>/dev/null \
    || gh api "repos/<repo>/contents/.github/PULL_REQUEST_TEMPLATE.md" 2>/dev/null \
    || gh api "repos/<repo>/contents/PULL_REQUEST_TEMPLATE.md" 2>/dev/null
  

  Hold it in memory for this sweep only. If not found, no problem — PR template compliance is informational.

Phase 2: Fast Classify ⚠️ REQUIRED

For each PR, apply the decision tree below. First matching rule wins. This phase uses metadata only — do NOT read diffs here.

CI is a hard gate. A PR with red or pending CI is the contributor's responsibility to fix before maintainer review. Do not comment, do not classify further — just list it under Waiting. A contributor with a failing CI does not need the maintainer pinging them; GitHub already notified them.

Phase 3: Deep Decide ⚠️ REQUIRED (only for PRs that survive Phase 2)

For each PR entering this phase, decide between merge / fix-and-merge / request-changes. This is where diffs and files get read — and only here.

• Read existing review activity first using fields supported by the local gh (latestReviews, reviews, comments). Do NOT re-raise points another reviewer already made.
• If exact unresolved review-thread state is needed and the local gh does not expose reviewThreads, fetch it best-effort through the GitHub API/GraphQL. If it still cannot be fetched, do not claim the PR has no unresolved threads; classify conservatively and mention that thread state was not locally exposed.
• If existing threads are known to be unresolved and the author has not responded, reclassify as Waiting: awaiting-author.
• For small PRs (additions + deletions <= 20 AND changedFiles <= 3): read the full diff, lean toward merge or fix-and-merge.
• For larger PRs: list changed files first, then read only the load-bearing ones (entrypoints, shared types, files crossing layer boundaries defined in project rules).

Decision rules

Scope rules of thumb:

• Prefer fix-and-merge over request-changes when the issue is simple, mechanical, low risk, and likely caused by the contributor not knowing local project conventions. Do this to avoid needless review round-trips for small PRs.
• Do not use fix-and-merge to paper over real uncertainty. Correctness, security, data behavior, public API, architecture direction, and cross-layer ownership questions still require request-changes.
• A PR that widens public API, touches shared types, or crosses package boundaries without prior discussion → request-changes (flag the scope, don't judge the code).
• A PR that violates a project rule (e.g. comments in code, hardcoded colors, content-based dedup, forbidden message persistence paths) → request-changes with a one-line reference to the rule name. Do not paste the offending code back at the contributor.
• Uncertainty → request-changes. Never merge when in doubt.

Phase 4: Present Table ⚠️ REQUIRED

Output exactly this three-section structure. Only sections with content are shown. The Cached section is folded by default (summary line only) unless --all was passed.

## PR Cleaner — <repo>  (sweep <UTC timestamp>, N open / M action / K waiting / C cached)

### 🟢 Action needed (M)

| PR | Author | Title | Action | Why | Draft Reply |
|---|---|---|---|---|---|
| #123 | @alice | feat: X | `merge` | Clean, 40 LOC, tests included | Thanks @alice, looks good to me! |
| #124 | @bob | fix: Y | `fix-and-merge` | Missing DCO sign-off, otherwise LGTM | (locally add sign-off — no reply needed) |
| #125 | @carol | refactor: Z | `request-changes` | Widens shared API without discussion | Thanks @carol! Could we align on the scope of the public surface change before landing? |

### 🟡 Waiting (K) — no action from you

| PR | Author | Reason | Since |
|---|---|---|---|
| #126 | @dave | CI not passing | 3h |
| #127 | @eve | Conflicts | 1d |
| #128 | @frank | Awaiting author response | 2d |

### ⚪ Cached (C)

2 PRs unchanged since last sweep: #101, #115. Run with `--all` to show.

Column notes:

• Author: if an actually fetched authorAssociation is FIRST_TIME_CONTRIBUTOR or FIRST_TIMER, append *first-time* after the handle (display only — reply template is NOT auto-switched). If the field is not available from local metadata, show only the handle.
• Action: one of merge / fix-and-merge / request-changes.
• Why: max ~10 words, factual, no hedging.
• Draft Reply: the exact comment text that will be posted if confirmed. If no reply is needed, write (no reply) or a short parenthetical note.

Phase 5: Confirmation Gate ⛔ NEVER SKIP

After the table, wait for the user. Common commands the user may type:

Never post without an explicit green light. No --quick flag bypasses this gate — if added later, it must still stop here.

Phase 6: Execute Approved Replies

For each approved reply:

gh pr comment <N> --repo <repo> --body "<draft text>"

• Use gh pr comment, NOT gh pr review --approve or gh pr review --request-changes. This skill keeps review state lightweight and avoids tangling with project-specific approval settings.
• For fix-and-merge rows, the skill does NOT fix code. It prints a one-liner telling the user what needs fixing locally. The user then uses /commit or /ship or manual git to handle it.
• The skill NEVER runs gh pr merge. Merging is always a manual step taken by the user after the sweep.

After posting, report:

Posted: #123, #125
Skipped: #124 (local fix), #127 (aborted)

Phase 7: Write Snapshot

Update pr-cleaner-state.json:

• For every PR seen this sweep (action + waiting + cached), write {headSha, comments, verdict, at}. Skipped drafts are NOT written.
• Set lastSweep to now (UTC ISO8601).
• Set repo to the target repo.
• Atomic write: write to <path>.tmp, then rename over the target.
• If the parent directory doesn't exist, create it. Do NOT create any sibling memory files — this snapshot is the only file this skill writes in that directory.

Reply Style ⚠️ REQUIRED

See references/reply-templates.md for the four canonical templates.

Global rules (IRON LAW scope):

• English only. No CJK in GitHub-facing text.
• Open with Thanks @<user>! or Thanks @<user>, .... No "We really appreciate", no "Thank you so much for your contribution".
• One or two short sentences. No walls of text.
• Never paste code blocks to contributors. Reference files by path/to/file.ts:42 at most. Explaining how to fix something is the contributor's job — the maintainer's job is to point at what.
• PR template non-compliance: mention it as FYI in parentheses, never block on it. Example: (FYI, we have a PR template at .github/PULL_REQUEST_TEMPLATE.md — no need to backfill).
• Conflicts: one line. Never explain how to rebase.
• Never apologize on behalf of the project for a contributor mistake.
• Never promise a timeline ("I'll review this next week").

Do Not

• Never post a comment without explicit user confirmation — never.
• Never paste code snippets to contributors, even for "helpful" suggestions.
• Never run gh pr merge automatically.
• Never run gh pr review --approve or --request-changes. Use plain gh pr comment.
• Never close a PR, even if it looks like spam. Flag for user judgment.
• Never modify PR labels — that is the triage skill's job.
• Never re-raise a point another reviewer already made. Read existing review activity first, and use reviewThreads only when it is actually exposed or fetched.
• Never classify a Draft PR.
• Never skip the Phase 5 confirmation gate.
• Never read PR diffs in Phase 2 — metadata only until Phase 3.
• Never cache a verdict across repos — the snapshot is keyed to one repo.
• Never fabricate PR data, author handles, or commit SHAs.
• Never claim "CI is green" without verifying statusCheckRollup.
• Never ping a contributor about a failing CI run — GitHub already did.