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The source-agnostic failure ontology shared by the FMEA library and the CE hazard side: Component → FailureMode → Mechanism → Effect → Hazard → Harm → Control, each row source+licence tagged. A licence ALLOWLIST (FailureKnowledgeLicenseAllowed) rejects copyrighted/proprietary/NC sources up front (© IITRI, DIN/ISO, AIAG, OREDA, CC-BY-NC) — the discipline learned from the FMD-91/NPRD-91 licence finding. Seeded with a curated NASA NTRS lessons-learned starter (5 real entries, public domain). GET /iace/failure-knowledge (+ ?domain=). Tests pin the governance invariant: every entry must carry a commercially-usable licence. Next: Playwright+OCR bulk loader (NTRS API → PDF/OCR → tuple extraction) to grow the corpus from NASA/OSHA/CPSC/MAUDE/NTSB. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>