Run Repo Cleanup

You ran a project. You spawned branches and parallel worktrees. Now you are done and the repo is a mess: live branches, worktrees, a dirty tree, and AI/dev artifacts scattered around. This skill sweeps all of that into a clean end state:

• Every live branch and worktree is reviewed like a human dev and merged into the main branch — locally, with git merge --no-ff. No PRs. No fork. No remote review process.
• Zero dangling branches afterward — none local, none on the remote.
• Every stale or conflicting branch is reported, never silently dropped.
• Every non-essential file (including hidden ones) is moved to a gitignored to-delete/ trash; docs are consolidated into a gitignored docs/.
• A trustworthy report tells you exactly what happened — and a re-run on an already-clean repo says "nothing to do."

This is a finishing tool. Run it when the work is done, not mid-feature.

When To Use

Trigger on phrases and git states like:

• "clean up this repo", "tidy up — I'm done", "sweep this before I move on"
• "merge my branches into main", "I have N worktrees from parallel agents — merge them in"
• "retire the stale branches", "no dangling branches left anywhere"
• Git state: ≥1 unmerged branch, or git worktree list shows ≥2 entries, or a dirty working tree after a finished task.

Do NOT use this skill for:

• Mid-feature work — this finalizes; it assumes the work is done.
• Opening pull requests — this skill deliberately does not. If you want fork-PRs, that is a different tool.
• Reviewing someone else's PR — use review-pr.
• Runtime debugging — use the repository's debugging workflow.

Pinned Defaults

Decided once; override per-project only if the repo says otherwise (AGENTS.md / CLAUDE.md / CONTRIBUTING.md win over this skill).

Non-Negotiable Safety Rails

1. Read the diff and commit messages before merging any branch. A merge is a decision, not a button. You must be able to say in one sentence what each branch does. See references/merge-rules.md.
2. Never blind-resolve a conflict. Read both sides, read the commit messages, understand intent. Resolve only when you understand it; otherwise abort the merge and report the branch as skipped-conflict. A skipped branch is a clean outcome; a wrongly-resolved conflict is silent data loss.
3. Move, don't rm. Anything non-essential goes to to-delete/ (gitignored), never deleted outright. The owner reviews later. See references/to-delete-and-docs.md.
4. Commit the dirty tree before merging anything. You cannot merge into a dirty working tree. Diff-walk the dirty files into conventional commits first (Phase 1).
5. Never force-push or rewrite published history unless explicitly asked. This skill works locally; deletion of merged remote branches is the only remote mutation, and only after git fetch --prune.
6. Stale ≠ delete. A branch older than the cutoff is reported and skipped by default, not merged and not deleted, unless you confirm it is real work worth keeping. Old + disconnected from current code is the classic "ignore it" case.
7. Every mutating script defaults to dry-run. --execute is required to change state. Always read the dry-run first.

The Six Phases

        live branches + worktrees + dirty tree + AI artifacts
                              │
   Phase 0 — Inventory: every branch w/ age + merged-status, worktrees, dirty files
                              │
   Phase 1 — Commit the dirty tree (diff-walk → conventional commits)
                              │
   Phase 2 — Merge plan: order live branches foundation→leaf; flag stale
                              │
   Phase 3 — Reviewed merge into main: read diff, subagent if big, --no-ff, skip-on-conflict
                              │
   Phase 4 — Aggressive sweep: non-essential → to-delete/, docs → docs/, both gitignored
                              │
   Phase 5 — Retire + verify + REPORT: prune merged branches local+remote, remove worktrees
                              │
        main holds all live work · zero dangling branches · clean tree · a report you trust

Each phase gates the next. If you are tempted to skip one, re-audit instead.

Phase 0 — Inventory

Think first: "What branches exist, how old is each, what's already merged, and what's genuinely live work?"

Run the read-only inventory:

python3 scripts/audit-state.py --base main           # human report
python3 scripts/audit-state.py --base main --json    # machine-readable, for the report

It reports, per branch (local and remote-only):

• last-commit date + age in days
• commits ahead/behind main
• already merged into main? (these go straight to Phase 5 retirement)
• files touched, dirty status

…plus all worktrees (branch, dirty count, ahead-of-main) and the dirty working tree grouped by directory.

Classification (the script does this; you verify):

• already-merged → nothing to merge; retire in Phase 5.
• active (≤ 7 days) → merge in Phase 3.
• stale (> 7 days, unmerged) → report and skip by default. Merge only if you confirm it is real, still-relevant work. Old + philosophically disconnected from current code → leave it, note it in the report.

Gate → Phase 1 when: you have the branch inventory and no in-progress rebase/merge/cherry-pick (the script warns on mid-operation; finish or abort it first).

Phase 1 — Commit the Dirty Tree

Think first: "You can't merge into a dirty tree. What concern does each uncommitted hunk belong to?"

For every modified file git diff <file>; for every untracked file read it. Then stage and commit one concern at a time — never git commit -am:

git diff <files-for-this-concern>
git add <files-for-this-concern>
git diff --cached
git commit -m "<emoji> <type>(<scope>): <imperative subject>"

Type/scope/gitmoji registry: references/conventional-commits.md. Uncertain files do not get committed — they get swept in Phase 4.

Gate → Phase 2 when: git status --short is empty (the only remaining untracked items, if any, are headed for to-delete/).

Phase 2 — Merge Plan

Think first: "If I merge A before B, does B then conflict or rebase cleanly? Which branch is the foundation?"

Skip to Phase 3 if there is exactly one live branch. With two or more (the parallel-worktree case — could be 25):

python3 scripts/plan-merge-order.py --base main --stale-days 7
python3 scripts/plan-merge-order.py --base main --stale-days 7 --json

The heuristic: a branch whose files are also touched by other branches is more foundational (merge it first so later branches merge onto a more-complete base); independent leaves merge last; stale branches are listed separately for skip-unless-confirmed. Recency is a factor — newer foundational work sorts ahead of older.

You decide the final order. The script suggests; override when semantics demand it (e.g. "tests for X must merge after X"). Reasoning model + the 25-worktree worked example: references/merge-rules.md.

Gate → Phase 3 when: you have an ordered list of active branches to merge and an explicit decision on each stale one.

Phase 3 — Reviewed Merge Into Main

Think first: "Would a human dev merge this branch as-is? What does it actually do?"

Get on the main branch first, working tree clean. Then, for each branch in the planned order:

1. Read it. git log --oneline main..<branch> for the commit messages, git diff main...<branch> for the change. Name what the branch does in one sentence.

2. Subagent-review if significant (>300 lines or >10 files): dispatch a subagent to read the branch's diff and report whether it's safe to merge, what it touches, and any risk. Treat its report as a claim — spot-check before trusting.

3. Merge with --no-ff:

   # dry-run the whole set first to see which branches conflict
   python3 scripts/merge-branches.py --base main --branches feat/a feat/b docs/c
   
   # then merge for real, in your chosen order
   python3 scripts/merge-branches.py --base main --branches feat/a feat/b docs/c --execute

   The script merges each branch --no-ff --no-commit to detect conflicts without committing; clean merges it commits, conflicted merges it git merge --aborts and records as skipped-conflict. It never resolves conflicts — that's your judgment call.

4. On a reported conflict: do it by hand. Read both sides + the commit messages, understand the intent, resolve, git diff --cached, commit. If you can't resolve it confidently, leave the branch unmerged and let the report flag it. Do not guess.

Gate → Phase 4 when: every active branch is either merged into main or explicitly recorded as skipped-conflict / skipped-stale.

Phase 4 — Aggressive Sweep

Think first: "What in this tree is needed to run, build, or understand the project? Everything else is trash."

Move aggressively — it's reversible (everything goes to a gitignored trash, nothing is deleted):

python3 scripts/sweep-artifacts.py            # dry-run: shows what moves where
python3 scripts/sweep-artifacts.py --execute  # move for real

The script:

1. Ensures to-delete/ and docs/ exist and are in .gitignore (adds them if missing).
2. Moves non-essential files into to-delete/ — including hidden files/folders: handoff notes, *.claude-session*, .aider*, derailment-notes/, scratch scripts, stray plans, secrets, unknown binaries. Be aggressive.
3. Consolidates docs into docs/ — stray *.md (outside the keep-list) and doc-like folders (agent-docs/, notes/) are merged into a single docs/. Multiple doc folders always unify into one docs/.
4. Keeps at root: README*, AGENTS.md, CLAUDE.md, LICENSE*, and everything required to run/build (source, package.json, lockfiles, configs).

Anything the script is unsure about it lists rather than moving — you make the call. Full keep/move rules + the rationale for gitignoring docs/: references/to-delete-and-docs.md.

Gate → Phase 5 when: the working tree contains only essential, tracked files (plus the gitignored to-delete/ and docs/).

Phase 5 — Retire, Verify, Report

Think first: "Did I leave anything dangling? Can I prove the repo is clean?"

5.1 Retire merged branches + worktrees

git fetch --all --prune                                          # accurate remote view first
python3 scripts/retire-merged-branches.py --base main            # dry-run
python3 scripts/retire-merged-branches.py --base main --execute  # delete merged local + remote + worktrees

The script refuses to delete the main branch, the current branch, or any branch not fully merged into main. It removes worktrees whose branch is merged. Stale, unmerged branches you chose to skip are kept and named in the report — they are not dangling, they are deliberately retained.

5.2 Verify — all must be true

• git status --short empty.
• git worktree list shows only the main worktree (or only deliberately-kept ones).
• git branch -vv shows only the main branch + deliberately-kept stale branches. No merged branch lingering.
• git branch -r (post-prune) shows no merged remote branch lingering.
• python3 scripts/audit-state.py --base main reports CLEAN (exit 0).

5.3 The report

Produce the report the owner actually wants — generate it from the JSON the scripts emit:

python3 scripts/audit-state.py --base main --json   # before/after states feed the report

The report must state, per branch:

And the artifact summary: how many files moved to to-delete/, what got consolidated into docs/.

Idempotency: on a re-run of an already-clean repo, every branch is already-merged or absent, nothing moves, and the report says "Repo is clean — nothing to do." That is the success signal for "I ran it again and everything was fine."

Common Mistakes

Scripts

All Python 3 stdlib only — no deps, no .env, no secrets. Every mutating script defaults to dry-run.

References

• references/merge-rules.md — recency policy, foundation→leaf ordering, the 25-worktree example, conflict handling, when to dispatch a review subagent, --no-ff rationale.
• references/to-delete-and-docs.md — what's essential vs sweep-eligible (incl. hidden files), the to-delete/ trash pattern, docs consolidation into a single gitignored docs/, .gitignore management.
• references/conventional-commits.md — type + scope registry, gitmoji, body/footer, breaking-change notation (for Phase 1).

Bottom Line

Inventory by age → commit the dirty tree → plan the merge order → review each branch and merge it into main → sweep the trash → retire every merged branch local and remote, then report. Nothing dangling, nothing merged blindly, nothing deleted that you didn't see. Run it when you're done; run it again and it tells you you're clean.