Manage skills across configured Codex skill roots by discovering, registering, installing, updating, rolling back, auditing, and maintaining them with provenance and fingerprints. Also use when users ask which skills are rarely or never used, underused but potentially useful, redundant, worth adopting, or why usage metadata is empty or inaccurate. Do not use as the router for choosing a skill for one unrelated current task; use ask-matt for that.
