GPT Review — B3-A2b birth_registry Exemption Policy Update — PASS Accepted — 2026-05-12

Scope reviewed

Reviewed Agent report:

• knowledge/dev/laws/dieu44-trien-khai/reports/p3d-birth-system-b3a2b-birth-registry-exemption-policy-update-report.md

Related governing artifacts:

• knowledge/dev/laws/dieu44-trien-khai/design/p3d-birth-system-b3a2-blocker-resolution-design.md rev7
• knowledge/dev/laws/dieu44-trien-khai/reviews/gpt-review-b3a2a-variant-function-equivalence-probe-pass-2026-05-12.md
• knowledge/dev/laws/dieu44-trien-khai/prompts/p3d-birth-system-b3a2b-birth-registry-exemption-policy-update-prompt.md

Verdict

Status: PASS_ACCEPTED

B3-A2b correctly updated only the public.collection_registry row for collection_name='birth_registry' to exempt it from B3-A birth trigger installation.

Accepted evidence

• b3a2b_birth_registry_exemption_status=PASS
• rows_updated=1
• transaction_committed=true
• rollback_values_captured=true
• coverage_status=BIRTH_EXEMPT_SYSTEM_LOG_OR_AUDIT
• coverage_scope_status=IN_SCOPE
• system_managed_semantics_in_exemption_reason=true
• no_trigger_created=true
• no_ddl=true
• no_function_patch=true
• no_birth_registry_table_mutation=true
• no_species_mutation=true
• no_5c2_migration=true

Constraint compliance

Agent correctly verified B3-P CHECK constraints:

• coverage_status allowed BIRTH_EXEMPT_SYSTEM_LOG_OR_AUDIT.
• coverage_scope_status allowed IN_SCOPE.
• SYSTEM_MANAGED was not an allowed coverage_scope_status and was not written there.

The SYSTEM_MANAGED semantics were stored only in coverage_exemption_reason:

SYSTEM_MANAGED: self-referential birth system table — recursive trigger risk

First-attempt note

The initial failed/aborted attempt caused no committed mutation. The flawed GET DIAGNOSTICS gate was removed; final execution relied on UPDATE 1 plus post-update verification. This is acceptable because the final transaction included post-update verification and post-commit verification.

Governance conclusion

The birth_registry recursive/self-birth blocker is resolved by policy exemption. birth_registry must remain excluded from B3-A trigger installation. Existing non-birth-system triggers on birth_registry remain untouched.

B3-A2 blockers status

• Variant function blocker: resolved by B3-A2a PASS_ACCEPTED_WITH_NOTE; fn_birth_registry_auto_id accepted as scoped contract sibling with guardrails.
• birth_registry blocker: resolved by B3-A2b PASS_ACCEPTED; exempted as system-managed via allowed policy values.

Next action

Run B3-A readiness rerun after B3-A2a + B3-A2b.

The rerun must be READ-ONLY and should determine whether B3-A is now ready for B3-A3 trigger install design/prompt. It must not install triggers or mutate PG.

b3a2b_review_status=PASS_ACCEPTED
birth_registry_exemption_accepted=true
trigger_install_allowed=false
phase5c2_migration_allowed=false
next_recommended_action=B3A_READINESS_RERUN_AFTER_B3A2