[cschanhniem]

Summary

• New schema: CandidateRejectionCertificate (CRC-) in src/openamp_foundry/evidence/candidate_rejection_certificate.py
• 12 fields: crc_id, pipeline_version, candidate_id, sequence, rejection_date, rejection_gate, rejection_reason, evidence_summary, proof_ladder_level_at_rejection, dry_lab_only, scores (opt), notes (opt)
• VALID_REJECTION_GATES: 10 values (wave0_5_safety_gate, novelty_gate, activity_threshold, diversity_filter, hemolysis_gate, toxicity_gate, synthesis_feasibility_gate, manual_review, claim_boundary_gate, calibration_gate)
• VALID_REJECTION_REASONS: 12 values (safety_score_below_threshold, activity_score_below_threshold, insufficient_novelty, hemolysis_risk_too_high, toxicity_risk_too_high, synthesis_infeasible, duplicate_of_known, diversity_cluster_full, human_reviewer_rejected, claim_boundary_violation, calibration_refused, overclaiming_language_detected)
• dry_lab_only=True enforced; proof_ladder_level_at_rejection capped at multi_signal_candidate_evidence
• 2 warnings: short evidence_summary, empty notes
• 63 tests covering valid records, ID/version rules, sequence/date, gate/reason, proof ladder/dry lab cap, notes/warnings, validate_dict edge cases
• BASELINE 6520→6583
• Closes Phase B B7 — pipeline rejections are now first-class auditable artifacts, not just missing entries