*All stelow- skills ship vendored, not just workflow.* The upstream sync discovers every top-level skills/stelow-/ directory (product playbooks included) and prunes retired names; worker prompts prefer the local copy with npx skills add as fallback only. Sync state moved to the stable plugin data dir (survives managed-install cache rotations) and one fail-soft pass runs at boot — About never shows "never" after a plugin update again.