skills-scheduled-mirror-sync — 2026-06-03 (drift found + auto-resolved)

Result: DRIFT FOUND + AUTO-RESOLVED

Daily sync of canonical Projects/Skills files into the Claude/Scheduled paths that scheduled-task prompts load. Ran via Desktop Commander (host FS) because Claude/Scheduled/ and Codex/ sit outside the Cowork mount.

Mirror map (5 entries)

#	Destination	Mode	Pre-sync	Action
1	_post-run-qa-reflection.md	partial	MATCH	none
2	sail-kb-daily-pulse/SKILL.md	full-skill	BODY DRIFT	merged, preload header preserved
3	sail-kb-daily-pulse/build_report.py	binary	DRIFT	byte-copied canonical→dest
4	_skill-preload.md	binary	content MATCH but untracked	staged + committed (now tracked)
5	Codex/_fallback/SKILL-PRELOAD-AND-DRIFT-GUARD.md	binary	MATCH	none (outside repo)

Drift detail: dest sail-kb-daily-pulse was missing the canonical v3.3.0 (2026-06-03) changelog line (restored kb_live_backlog.py helper, live_backlog_count aggregate, Section C cap at 30 exports). build_report.py drift is the matching Section C change — a coherent pair. Preload header preserved byte-identical.

Verification (QA)

SKILL.md body-drift re-check after write: False (in sync). PASS.
build_report.py cmp -s byte-equal: PASS.
Header preservation diff: identical. PASS.
Rollback backups: Codex/skills-scheduled-mirror-sync/_backups/2026-06-03/.

Git

Stale-lock janitor: no stale locks. Only the 3 explicit mirror files staged (no git add -A); 18 unrelated dirty files left untouched.
Commit 7c0d43f → pushed 7418658..7c0d43f main to sail-scheduled-tasks.

Cross-checks

Step 3 Skills_Library: checked=1, drift=0, 43 without mirror (deprecated surface; no auto-create). Clean.
Step 4 discovery: discover_unmapped_partials.sh absent → ran manual equivalent. One candidate: skills-scheduled-mirror-sync (own mirror, not in map) but byte-identical, no drift. Flagged for manual map-add.
Step 5 surface check: all loader/MCP/API surfaces covered or manifest-referenced. Flags: none.

Open items (non-blocking, QA: Open)

Recreate Projects/Skills/skills-scheduled-mirror-sync/discover_unmapped_partials.sh so Step 4 is deterministic instead of a manual fallback.
Optionally add skills-scheduled-mirror-sync (self) to the mirror map so the task's own mirror is drift-guarded.