GPT Review — B3-F0a Sibling Policy Materialization Design + Prompt — Approved with Patches — 2026-05-12

Scope reviewed

Reviewed Opus artifacts:

• knowledge/dev/laws/dieu44-trien-khai/design/p3d-birth-system-b3f0a-sibling-policy-materialization-design.md
• knowledge/dev/laws/dieu44-trien-khai/prompts/p3d-birth-system-b3f0a-sibling-policy-materialization-prompt-DRAFT.md
• knowledge/dev/laws/dieu44-trien-khai/reports/p3d-birth-system-b3f0a-sibling-policy-materialization-design-report.md

Related governing review:

• knowledge/dev/laws/dieu44-trien-khai/reviews/gpt-review-b3f0-onboarding-gate-dryrun-partial-accepted-2026-05-12.md
• knowledge/dev/laws/dieu44-trien-khai/reviews/gpt-review-b3a2a-variant-function-equivalence-probe-pass-2026-05-12.md

Verdict

Status: APPROVED_FOR_AGENT_EXECUTION_WITH_GPT_PATCHES

Opus design direction is accepted. dot_config is accepted as the PG-native policy store for this scoped sibling birth policy. Agent execution is approved using the patched prompt revision 9 or latest.

PG-first / PG-native / PG-driven assessment

• PG-first: policy is materialized into dot_config, not left in chat/review prose.
• PG-native: future gate logic reads a PG row by key and parses the stored value; no external config file or app-side list is required.
• PG-driven: runtime sibling acceptance is driven by the policy row plus live trigger/function OID checks.

GPT patches applied

Patch 1 — add source provenance to policy value

The policy value is now a JSON object with:

• version=1
• source_review
• entries

This prevents orphan policy values with no review lineage.

Patch 2 — distinguish policy content from runtime hardcode

The 3 collection names are acceptable only as policy content, stored as PG data with source review reference. Future gate code must not embed this list.

Patch 3 — semantic JSON comparison

Existing policy values must be compared by parsed/canonical JSON semantics, not raw text string equality.

Patch 4 — duplicate policy key handling

If more than one row exists for the same policy key, Agent must STOP as BLOCKED_DUPLICATE_POLICY_KEY.

Patch 5 — advisory lock handling

pg_try_advisory_xact_lock must be checked. If false, rollback and report LOCK_BUSY.

Patch 6 — rollback precision

Rollback must delete only the inserted key if this run inserted it. This prompt does not allow overwriting conflicting existing policy.

Patch 7 — post-commit verification

Post-commit verification must confirm exactly one key row, JSON parse, version, source review, function entry, collection set matching live scope, and no other dot_config keys mutated.

Patch 8 — final response fields

Prompt final response now requires transaction, rollback, source review, out-of-scope sibling, trigger/function mutation, and policy-store mutation fields.

No-hardcode conclusion

The materialized value still contains the 3 approved exception collections, but this is policy data, not code hardcode. The flow is acceptable because:

1. the value is stored in PG policy storage;
2. it has an approved source review;
3. execution verifies the live sibling trigger set before inserting;
4. future gate reads the policy row rather than an embedded list;
5. future changes must update policy through a reviewed flow.

Execution approval

Agent may execute B3-F0a using:

• knowledge/dev/laws/dieu44-trien-khai/prompts/p3d-birth-system-b3f0a-sibling-policy-materialization-prompt-DRAFT.md revision 9 or latest.

Still forbidden

• No B3-F1 soft gate install.
• No hard gate.
• No trigger/function mutation.
• No duplicate-trigger cleanup.
• No description_policy cleanup.
• No Phase 5C2.
• No UI cutover.

Required execution report

Agent must write:

• knowledge/dev/laws/dieu44-trien-khai/reports/p3d-birth-system-b3f0a-sibling-policy-materialization-execution-report.md

Governance status

b3f0a_design_review_status=APPROVED_FOR_AGENT_EXECUTION_WITH_GPT_PATCHES
b3f0a_agent_execution_allowed=true
b3f1_soft_gate_allowed=false_until_b3f0a_review_and_b3f0_rerun
phase5c2_migration_allowed=false
next_recommended_action=AGENT_EXECUTE_B3F0A_SIBLING_POLICY_MATERIALIZATION