What was done

• Pre-flight resolved on first lookup (Projects/admin/scheduled-tasks/SKILL-PRELOAD-AND-DRIFT-GUARD.md).
• Verified vault, mount, canonical/mirror SHA256s for all 3 mapped pairs.
• Checked Skills_Library compatibility surface: 1 entry (_fixes-2026-04-23/), no real skill mirrors, deprecation honored.
• Wrote run log to /Users/samaguiar/Documents/Codex/skills-scheduled-mirror-sync/2026-05-12.md.
• Pushed Workflow entry to SAIL Knowledge Base (this is the companion session entry).

Why the session ended

Task completed cleanly. No drift to fix, nothing to commit, no pending items.

Recommended next actions

• Pending approval: Build an auto-discovery pass that scans Claude/Scheduled/**/*.md prompts for _<slug>.md partial references and cross-references against Projects/Skills/<slug>/SKILL.md. Today's snapshot: 61 canonical skills vs only 2 partials in the mirror map. The map is hand-maintained, so new partials added by other agents would silently drift.
• Pending approval: Drop the resilience overlay's stale note that skills-sync / drift-prevention Tags are not in the SAIL KB tag pool. Both tags ARE present (verified today by fetching the data source schema). Update the task body to drop the workaround comment so future runs don't second-guess.
• No-touch items: 20+ pre-existing modified files in Claude/Scheduled/ working tree are owned by other agents — leave alone.

Handoff for new agent

This is a low-stakes, idempotent scheduled task. If the next agent runs it tomorrow:

1. Compare SHA256 between each canonical and its destination.
2. If different, merge preserving the <!-- preload-header-v1 --> block on the destination if present.
3. Commit + push only the files actually touched. Other modified files in the repo belong to other agents.
4. Log to Codex/skills-scheduled-mirror-sync/<date>.md. Push to SAIL KB as Type=Workflow.
5. Tag QA: Clean if no drift, QA: Open if drift was found.

Not demanding, just for continuity — today's run gave you a clean baseline. The system is healthy.