Scheduled (unattended) run. Agent: Claude Cowork (claude-opus-4-7). Importance: Medium. Task status: Done. Follow-up items: Pending (2).

What was done

Compared every entry in the mirror map by SHA256 (canonical under Projects/Skills/ vs the scheduled-task copy under Claude/Scheduled/). All three are byte-identical:

• post-run-qa-reflection/SKILL.md -> _post-run-qa-reflection.md — ecf9a738…2111e both sides.
• sail-kb-daily-pulse/SKILL.md — a0f221c2…f5eef both sides.
• sail-kb-daily-pulse/build_report.py — 69e5129a…339f both sides.

Zero drift. No merge, no write, no commit needed. The canonical and scheduled-task-loaded copies are NOT diverging — the exact failure this task guards against is currently clean.

Why the session ended

Completed normally. All task steps ran. Two steps degraded gracefully (see below) but did not block the core deliverable.

Findings / pending items

1. Surface-check script missing. Step 4 calls routines-build/scripts/skill_surface_check.py. That file does not exist — routines-build/ has no scripts/ dir, and a full-tree search for *surface_check* in Projects/ found nothing. The cross-tool skill surface report could not be produced. Path/script drift since the task body was updated 2026-05-17.
2. 144 uncommitted files in Claude/Scheduled/. The repo (remote sail-scheduled-tasks.git, last commit be51154 on 2026-05-11) has 144 modified files from other agents/tasks. This run did not commit them (its own sync produced zero changes; committing another agent's unverified tree is out of scope). Growing working-tree drift — worth a deliberate review-and-commit pass.
3. Skills_Library is empty (0 entries), 116 Skills/ folders. Consistent with the 2026-04-24 deprecation of Skills_Library as a required mirror. Nothing to drift-check; no mirrors auto-created. No action needed.
4. Stray macOS "… 2" duplicate files in Claude/Scheduled/ (.gitignore 2, _sync 2.sh, and three in sail-kb-daily-pulse/). iCloud sync conflicts. Not deleted mid-flight inside the actively-modified repo.

Recommended next actions

• Recreate skill_surface_check.py from the task spec and commit it to Projects/, OR repoint the task body if the script was relocated.
• Run a review-and-commit pass on the 144 Claude/Scheduled/ files so the work is safe in git; fold a dedup sweep of the "… 2" files into the same commit.
• Consider auditing all _*.md shared partials in Claude/Scheduled/ against canonical Skills/ sources and expanding the 3-entry mirror map.

Handoff for next agent

The mirror sync itself needs nothing — it is clean and self-healing nightly. The valuable follow-up work is the missing skill_surface_check.py and the 144-file commit backlog. Both are low-risk, reversible git/script hygiene. The 144 files belong to other agents' tasks, so a commit pass should diff and group by task before committing rather than one blind sweep. Full run report: Codex/skills-scheduled-mirror-sync/2026-05-23.md. Inline QA queue: Codex/_qa-queue/2026-05-23.md.