feat(skills): /prm — the "PR, CI green, then merge" wrap-up door

[Jammy2211]

What

Adds /prm — a composition door for the sentence typed at the end of nearly every task: "PR CI green then merge". Three keystrokes instead of the sentence.

1. Resolve the feature PR — argument (/prm 380, PyAutoArray#42, URL) → current branch → the claimed task's library-pr:/workspace-pr: in Mind's active.md → gh pr list. More than one candidate → lists them and asks once, never guesses.
2. Judge CI honestly — enumerates every workflow run for the head sha (push and pull_request) and every job inside each, plus mergeable/mergeStateStatus. One green row is 1 of 4 signals.
3. Wait or stop — polls ~90s, caps at ~30 min; on red it fetches the failing job log immediately (GitHub purges the blob) and stops.
4. Merge in gate order — library PR first, workspace PR only once that reads MERGED. No --delete-branch (it would kill the local branch under a task worktree).
5. Finish the ship — hands back to ship_*: Shipped comment, lifecycle.py record, Mind push, cleanup.

Why it owns no gate

The merge gates stay with /ship_library / /ship_workspace, the verdict stays with GitHub Actions. /prm only sequences them. It refuses on red / pending / conflicting / unmerged upstream library PR, never force-merges, and asks before closing the issue — typing /prm authorizes the merge, not the close.

Agent-agnostic + mobile

Every step is gh (2.4.0-safe — no gh search), so no checkout is required. The skill detects local vs remote (mobile Claude Code chat / Codex) and skips only the local-only cleanup with a note. Installed to all four surfaces; the committed .claude/ + .codex/ discovery links in this PR are what make it register in web/cloud sessions.

Changes

• skills/prm/{SKILL.md,prm.md,reference.md} — 127-line mandatory load, gh mechanics in the lazy reference.md
• skills/COMMANDS.md — registered as a tier-4 composition door
• AGENTS.md — named in the command-surface prose
• skills/ship_library + skills/ship_workspace — their merge steps point at /prm
• regenerated committed discovery (also picks up the previously-missing sizing links)

Checks

• bin/check_skill_line_counts.sh → OK, all 46 skills within the 200-line budget
• bin/install.sh --check-project-discovery → OK (5 repos)
• bin/install.sh --check-agents-surface → OK

🤖 Generated with Claude Code

https://claude.ai/code/session_01UrgmL8WMK82GxQJjPL8ZCs