Detect stale or foreign files in package-specific extraction directories before starting fresh work while excluding current and atomic ownership markers.
Keep recursive directory inspection confined to the start-conflict boundary and let archive cleanup prune empty package directories directly.
Register German-audio, auto-rename, collection, hybrid, and legacy fixtures through real complete PackageOutputScope records with current method signatures.
Verify plain stops only persist after active work drains, while update-restart parking keeps both its immediate checkpoint and final queued state.