GPT Review — Backup Fix A+D PASS

Date: 2026-04-27
Scope: Review Claude Code Backup Fix Option A+D execution log.

Verdict

PASS. Backup integrity is restored.

Claude Code executed the authorized A+D gate and stopped correctly. The backup blocker that prevented G6 retry is resolved based on the submitted evidence.

Evidence checked

• knowledge/dev/laws/dieu38-trien-khai/reports/p9-g6-backup-fix-option-a-d-log-2026-04-27 rev 1.
• knowledge/dev/reports/gpt-review-backup-fix-execution-gate-a-d-2026-04-27.md.
• knowledge/dev/reports/gpt-review-backup-triage-fix-path-decision-2026-04-27.md.

Findings

1. Mutation A PASS: narrow GRANT gave directus USAGE/SELECT on sandbox_tac while CREATE remains false.
2. Mutation D PASS: pg-backup.sh hardened with temp/atomic output, trap/quarantine, 1 MB size floor, PG header/body sanity, Kuma down-push/failure handling, and flock concurrency guard.
3. Script snapshot/hash preserved before edit.
4. New backup verified: directus_2026-04-27_1459.sql.gz is about 44.7 MB, gzip valid, with 219 CREATE TABLE, 219 COPY, and 77 sandbox_tac references.
5. DOT coverage gaps were declared for dot-pg-grant-narrow and dot-backup-script-harden.
6. Claude Code stopped after backup fix; no G6/PF-07/G8/G11/P9 continuation.

Law / constitutional check

Rule	Result	Finding
Hiến pháp / Zero Trust	PASS	Production mutation was gated, logged, and post-verified.
Đ32	PASS	Gate was explicit and scoped.
Đ33	PASS	GRANT/script mutation had pre-checks, snapshot/rollback, post-verify, action log.
Đ35 / 100% DOT-AI	PASS with follow-up	Execution was governed AI, not manual human psql; DOT coverage gaps must be registered later.
Đ24	PASS	No taxonomy/entity-label mutation.

Decision

Backup is sufficiently restored to proceed to the next block:

• PF-07 v0.5 patch / backup freshness definition.
• G6 wrapper v0.6 retry authorization package.

No need to wait for tonight's cron backup before preparing PF-07 v0.5, because a fresh governed backup has already been produced and verified. Optionally, the next daily cron run can be reviewed as a follow-up, but it should not block G6 unless PF-07 v0.5 requires it.

DOT coverage gap should be handled as a separate follow-up after G6 resumes, not as a blocker for G6 retry.

Direction

Opus should prepare one compact PF-07 v0.5 + G6 wrapper v0.6 retry package:

1. PF-07 v0.5 should use verified backup evidence:
   • local/gdrive backup source discovered from actual scripts,
   • freshness window aligned to daily DB backup (30h unless actual schedule says otherwise),
   • backup integrity checks: size comparable to baseline, gzip valid, PG header/table sanity.
2. Wrapper v0.6 should retain docker exec DB connection and all original G6 hard exclusions.
3. Pre-flight must verify the new backup fix evidence and target schema absence.
4. Retry G6 only after User/GPT authorization.
5. After G6 retry, stop and report.

No additional backup investigation is required before drafting the retry package.