Agent-Skills.md

Agent Skills: Merge Queue

Inspect and drain the local deferred-merge queue. Shows worktree merges that /finish deferred (transient block — e.g. the main checkout was on the source branch with WIP) and that a local launchd drainer retries until they land. Use when the user says 'merge queue', 'what merges are pending', 'drain the merge queue', or invokes /merge-queue.

UncategorizedID: alienfast/claude/merge-queue

Repository

alienfast/claude
alienfastLicense: MIT
11

Install this agent skill to your local

pnpm dlx add-skill https://github.com/alienfast/claude/tree/HEAD/skills/merge-queue

Skill Files

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skills/merge-queue/SKILL.md

Skill Metadata

Name
merge-queue
Description
Inspect and drain the local deferred-merge queue. Shows worktree merges that /finish deferred (transient block — e.g. the main checkout was on the source branch with WIP) and that a local launchd drainer retries until they land. Use when the user says 'merge queue', 'what merges are pending', 'drain the merge queue', or invokes /merge-queue.

Merge Queue

A /finish … merge (or /full … wt) that can't advance the source branch right now but could later — the transcript case where the main checkout sat on the source branch with another session's uncommitted WIP — is deferred, not failed. scripts/finish-merge.sh exits 3, self-enqueues a marker under <repo>/.claude/merge-queue/<issue>.json, and emits the DEFERRED-MERGE lifecycle tag. A local launchd drainer (scripts/drain-merge-queue.sh → merge-queue.sh drain) retries every ~15 min until each merge lands. This skill is the manual window into that queue.

All logic lives in scripts/merge-queue.sh; this skill only dispatches to it and narrates the result.

Arguments

/merge-queue [list | drain | <ISSUE-ID>]

  • (none) or list — show the queue.
  • drain — run a drain pass now across all registered repos (don't wait for launchd).
  • <ISSUE-ID> (e.g. PL-361) — drain just that one issue now (its repo is resolved automatically from the registry), then report its status. Other queued issues in the same repo are not touched.

Behavior

list (default)

Run and show the output verbatim:

~/.claude/scripts/merge-queue.sh list

Each row is ISSUE | REPO | AGE(min) | TRIES | STATUS / REASON. Interpret the status for the user:

  • queued — transient block; the drainer will keep retrying. No action needed.
  • NEEDS-RESOLUTION — the deferred merge hit a real conflict. It needs a human: resolve it (see below), the drainer cannot.
  • HARD-FAIL — a hard precondition failed (worktree removed, source branch gone, etc.). Inspect; the marker won't clear on its own.

If the queue is empty, say so and stop. (list reads the repos in ~/.claude/merge-queue-repos.txt, which a repo self-registers on its first deferral — so an "empty" result for a repo that never deferred is expected, not a lost marker.)

drain / <ISSUE-ID>

Run a drain pass (the script serializes against the launchd drainer via a per-repo lock, so this is always safe to run):

~/.claude/scripts/merge-queue.sh drain               # all registered repos
~/.claude/scripts/merge-queue.sh drain '<ISSUE-ID>'  # just that one issue (repo auto-resolved from the registry)
~/.claude/scripts/merge-queue.sh drain '<repo-root>' # one whole repo's queue

The drainer prints one line per marker: DRAINED (merged, marker removed), STILL-BLOCKED (transient, will retry), NEEDS-RESOLUTION (conflict — needs you), or HARD-FAIL. Surface those lines and summarize.

Resolving a NEEDS-RESOLUTION entry (conflict)

The drainer deliberately never resolves conflicts unattended — that would land code on a shared branch without review. Resolve it in a normal session, exactly like /finish Step 9's exit-2 path:

  1. Read the marker for the worktree path: jq . '<repo>/.claude/merge-queue/<issue-lower>.json'. The worktree is mid-merge of the source branch.
  2. For each conflicted file under <wt_dir>, resolve both sides.
  3. git -C '<wt_dir>' add <resolved-files>
  4. Run pnpm check from <wt_dir> — must be green before committing.
  5. git -C '<wt_dir>' commit -F '<wt_dir>/tmp/git-merge-msg-<issue-lower>.md'
  6. Re-drain that issue: ~/.claude/scripts/merge-queue.sh drain '<ISSUE-ID>'. On success the marker is removed and the worktree torn down.

Installing the drainer

The queue is inert without the launchd agent loaded. ~/.claude/update.sh installs and refreshes it automatically (it renders the plist template for the current $HOME and bootstraps it idempotently — macOS only), so a normal update.sh run is all that's needed. To (re)install by hand without a full update (see the plist header for the exact commands):

sed "s|__HOME__|$HOME|g" ~/.claude/launchd/com.alienfast.merge-queue-drain.plist \
  > ~/Library/LaunchAgents/com.alienfast.merge-queue-drain.plist
launchctl bootstrap gui/$(id -u) ~/Library/LaunchAgents/com.alienfast.merge-queue-drain.plist

To remove: launchctl bootout gui/$(id -u)/com.alienfast.merge-queue-drain.

Drainer activity is logged to ~/.claude/logs/merge-queue-drain.log. Notifications fire (macOS desktop) only for NEEDS-RESOLUTION / HARD-FAIL / long-stuck entries — never for routine retries.