Objective

Nightly sync of canonical Skills/X/SKILL.md into the Claude/Scheduled/_X.md paths scheduled tasks load, preventing version drift.

What was accomplished

• Mirror-map drift check (Step 1): CLEAN. All three entries SHA256-identical to canonical, so 0 mirrors synced and (correctly) no commit/push (Step 2 skipped).
  • _post-run-qa-reflection.md (partial) — SAME
  • sail-kb-daily-pulse/SKILL.md (full-skill) — SAME
  • sail-kb-daily-pulse/build_report.py (binary) — SAME
• Step 0 dirty-tree heads-up: Claude/Scheduled working tree has 17 dirty entries (other agents' work). Mirror-map files in that set: M build_report.py (uncommitted but byte-identical to canonical) and untracked pulse_history.json (generated artifact). Left untouched per Step-0 governance.
• Step 3 Skills_Library: 138 canonical Skills folders, 1 has a Library counterpart (SHA matches, 0 drift), 128 with no counterpart left alone per 2026-04-24 deprecation. No auto-create.
• Step 4 surface check: clean — 129 canonical skills, all MCP/editor/manifest surfaces covered, 0 flags.

Decisions made

• Routed all host-side reads/writes through Desktop Commander because the Cowork bash sandbox mounts only /Users/samaguiar/Documents/Projects; Claude/Scheduled/ and Codex/ are outside the mount.
• Did not commit the pre-existing dirty build_report.py — this task only commits files it actually syncs, and no sync occurred this run.

Improvement candidates (pending Sam, QA: Open)

1. Surface-check root-detection bug. routines-build/scripts/skill_surface_check.py find_projects_root() stops at the first ancestor containing both CLAUDE.md and Skills/ — and routines-build/ itself matches, so it resolves root as routines-build and undercounts canonical skills (11 vs 129) and misses AGENT-TOOL-MANIFEST.md. Re-running with SAIL_PROJECTS_ROOT env var produced the correct result. Fix options: hardcode env in the task invocation, or tighten the sentinel to a root-only marker (e.g., FOLDER-INDEX.md + AGENT-TOOL-MANIFEST.md).
2. Uncommitted-but-canonical build_report.py in Claude/Scheduled (a prior sync updated the working tree but never committed). Could be committed by the owning task to clear the dirty flag.

Pickup prompt for next run

Mirror map is in sync as of 2026-05-31. If build_report.py still shows M next run, a prior sync left it uncommitted — confirm it matches canonical, then decide whether to commit. Consider invoking skill_surface_check.py with SAIL_PROJECTS_ROOT=/Users/samaguiar/Documents/Projects (or fix root detection) so the surface report is accurate by default.

Evidence

• SHA256 compares run via Desktop Commander shasum -a 256 on host.
• Codex log: /Users/samaguiar/Documents/Codex/skills-scheduled-mirror-sync/2026-05-31.md.
• Surface check re-run output captured with correct root.

QA status: Open (no drift, but two improvement candidates awaiting Sam's call).