Refine the REQ-THREAT-ITEM fix per review: recipes taking scrap as input participate in an item threat computation only when no scrap-free recipe produces that item, mirroring the existing reprocessing-path rule instead of a blanket exclusion. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01DyCu8vwChKMbLJQ3xosYEN