[cschanhniem]

Summary

• CertificateClaimBoundary (CCB-): 10 fields, negative complement of PLC-, prevents score-to-proof drift
• 13 validation rules: CCB- prefix, pipeline_version+certificate_id+candidate_id non-empty, boundary_date ISO, unsupported_claim_classes non-empty with 8-value vocab (biological_activity/human_safety/clinical_utility/animal_efficacy/therapeutic_indication/regulatory_approval/mechanism_proof/resistance_profile), ≥3 classes required, boundary_statement non-empty ≤600 chars, dry_lab_only=True enforced, all_listed_classes_unsupported=True enforced, no duplicate classes, notes ≤300 chars
• 2 warnings: incomplete class list (missing classes reported), notes empty
• 63 tests; BASELINE 6268→6331
• CLI: openamp-foundry certificate-claim-boundary-check
• Implements Phase B B2 — requires explicit enumeration of what is NOT supported before certificates can be shared externally