[cschanhniem]

Summary

• SyntheticBoundaryAuditRecord (SBR-): 14 fields, makes proof-ladder boundary enforcement an evidence artifact
• 16 validation rules: SBR- prefix, pipeline_version+batch_id non-empty, audit_date ISO, evidence_source vocab (4: synthetic/simulation/computational/mixed_synthetic_lab), total_candidates_checked ≥1, total_violations bounds, violation_rate [0,1] and consistent (tol 0.01), blocked_upgrades in [0,total_violations], max_proposed_ladder_level [1,6], synthetic-only cannot propose level ≥4 without violations, policy_enforced=True enforced, enforcement_outcome vocab (3), summary non-empty ≤400 chars, notes ≤300 chars
• 3 warnings: violation_rate >0.3, partial block, notes empty
• 63 tests; BASELINE 6044→6107
• CLI: openamp-foundry synthetic-boundary-audit-record-check
• Implements Phase G G8 — anti-overclaim policy is now an auditable artifact with machine-verifiable boundary enforcement