Cleanup Artifacts — Orchestrator

Meta — Single-agent orchestration with built-in critic gate. Audits and grooms the project's .agents/skill-artifacts/ tree, classifying every artifact and (with explicit per-category confirmation) MOVING stale/orphan/legacy/ephemeral files to a dated archive. Never deletes.

Core Question: "Is this artifact still load-bearing for the project, or is it accumulated cruft from a skill run that finished weeks ago?"

Critical Gates — Read First