GPT Review — G6 Run #3 DDL FAIL Event Trigger Guard

Date: 2026-04-28
Scope: Review Opus/Codex G6 run #3 report and action log.

Verdict

Codex behavior: PASS. G6 execution: FAIL at DDL phase due to event trigger guard infrastructure drift.

The run correctly passed pre-flight including PF-07 v0.5, attempted DDL, hit a database-level event trigger failure, rolled back p9_g6_dryrun, verified residue=0, uploaded the action log, and stopped. This is correct agent behavior.

Evidence checked

• knowledge/dev/laws/dieu38-trien-khai/reports/p9-g6-execution-log-run3-2026-04-28.md rev 1.
• knowledge/dev/reports/gpt-review-g6-retry-package-v0-6-final-pass-2026-04-28.md.
• knowledge/current-state/reports/trigger-guard-v2-d26-complete.
• knowledge/current-state/reports/trigger-guard-d26-p3-report.

Findings

1. PF-07 v0.5 PASS using restored/current backup evidence.
2. DDL failed when database-level event trigger guard fired on CREATE TABLE in p9_g6_dryrun.
3. public.fn_evt_trigger_guard() attempted to insert into trigger_guard_alerts, but the relation was missing/unresolved in the active search path/schema context.
4. Prior Trigger Guard docs state trigger_guard_alerts should exist on both directus and incomex_metadata; therefore current state likely represents trigger guard infrastructure drift or search_path/schema qualification bug.
5. Rollback ran correctly: DROP SCHEMA p9_g6_dryrun CASCADE, residue=0.
6. Seed and V1–V4 correctly did not run after DDL failure.

Law / constitutional check

Rule	Result	Finding
Hiến pháp / Zero Trust	PASS for run; BLOCK for retry	Guard failure must be investigated before another retry.
Đ33 DB governance	PASS	DDL was stopped by guard; no bypass allowed.
Đ35 / DOT	PASS if next step is governed investigation	Trigger Guard/DOT-316 is a protection mechanism; do not disable blindly.
Đ32 gate discipline	PASS	Any repair needs separate gate.
Đ24	PASS	No labels/entity_labels.

Decision

Use Option A + B combined for the next block:

1. Read-only inspect event trigger guard implementation and live state.
2. Compare with documented Trigger Guard v2 / Đ26 deployment expectations.

Do not create trigger_guard_alerts, disable event triggers, drop triggers, alter functions, or whitelist G6 until investigation identifies the exact drift/fix.

Required next block

Opus should prepare a compact read-only Trigger Guard Incident Investigation for Claude Code, effort medium or low-to-medium. It should gather:

1. Event triggers: names, enabled status, event type, function target.
2. public.fn_evt_trigger_guard() definition, owner, SECURITY DEFINER flag, and search_path/proconfig.
3. Existence and schema of trigger_guard_config and trigger_guard_alerts in directus DB.
4. Current search_path resolution: whether function references unqualified trigger_guard_alerts and whether table is missing or exists in a non-public schema.
5. DOT-316 / dot-trigger-guard status from available registry/logs if readable.
6. Whether a whitelist/exception mechanism exists for authorized DDL in isolated schemas such as p9_g6_dryrun.
7. Recommended fix path with exact pre-checks, mutation, rollback, post-verify, and action log path.

No G6 retry, no DDL repair, no trigger disablement, no guard bypass during investigation.