GPT Decision S190 — D28 Execute R2 committed successfully, authorize read-only follow-up

Date: 2026-04-30
Phase: TAC MVP / P10B / D28
Decision: D28 insert commit accepted as successful. Execute R2 final verdict remains incomplete/FAIL only because a prompt query bug stopped lifecycle/render/diff steps. Authorize read-only follow-up.

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1. Evidence read

Read report:

knowledge/dev/laws/dieu38-trien-khai/reports/p10b-2c-r2-d28-execute-report-2026-04-30.md

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2. Data state confirmation

The production DB mutation has already occurred and is accepted as committed.

Confirmed evidence:

• Gate 0 PASS: SSH VPS vmi3080463.contaboserver.net, Docker postgres, DB identity directus/directus.
• Package fetched from KB and SHA-verified.
• Runtime preflight PASS: schema present, trigger count 3, collision 0/0, baseline captured.
• Run-file guard PASS: exactly one bare COMMIT;, zero bare ROLLBACK;.
• psql output shows 82 INSERT 0 1 lines and COMMIT.
• pub_id: cf8d4dc0-39b2-557e-8693-1053cbbbd332? Correction: actual pub_id in report is cf8d4dc0-3d70-55f8-8c35-e01da101d710.
• verify-counts.sql PASS:
  • publication=1
  • logical_unit=27
  • unit_version=27
  • publication_member=27
  • total=82
• Publication lifecycle check returned proposed.
• Review state check returned unreviewed = 27.
• Scope guard PASS:
  • publication doc_code DIEU-28 count = 1
  • logical_unit prefix D38-DIEU28-% count = 27
  • publication_member for pub_id count = 27
• BG-UV-02 live PASS:
  • has_desc=20
  • null_desc=7

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3. Root cause of FAIL verdict

The FAIL was caused by a prompt query bug:

SELECT lifecycle_status, count(*)
FROM tac_unit_version uv
JOIN tac_logical_unit lu ON lu.id = uv.logical_unit_id
...

Both tac_unit_version and tac_logical_unit have lifecycle_status, so PostgreSQL correctly returned:

ERROR: column reference "lifecycle_status" is ambiguous

Correct query:

SELECT uv.lifecycle_status, count(*)
FROM tac_unit_version uv
JOIN tac_logical_unit lu ON lu.id = uv.logical_unit_id
WHERE lu.canonical_address LIKE 'D38-DIEU28-%'
GROUP BY uv.lifecycle_status;

This is a verification-query bug, not a data bug. Agent correctly followed flow-control and stopped without retry/correction.

Additional note: T4 wrapper had a local shell issue because status is read-only in zsh. The insert was not retried and the DB evidence shows COMMIT succeeded. Future shell snippets should use a non-reserved variable name such as psql_status.

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4. Decision

Authorize a read-only follow-up:

P10B-2C-R2-FOLLOWUP — Complete D28 lifecycle verify + render/diff/tree from committed rows

This follow-up must not insert, update, delete, rollback, or execute package SQL.

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5. Direction to Opus

Opus should dispatch a compact read-only follow-up. Do not make it overly fussy.

Required scope:

1. Gate 0 SSH VPS identity.
2. Confirm existing committed D28 state:
   • exactly one publication DIEU-28/v2.0;
   • pub_id = cf8d4dc0-3d70-55f8-8c35-e01da101d710 or report mismatch;
   • LU=27, UV=27, PM=27;
   • BG-UV-02 live has_desc=20/null_desc=7.
3. Run corrected lifecycle query:

   SELECT uv.lifecycle_status, count(*)FROM tac_unit_version uvJOIN tac_logical_unit lu ON lu.id = uv.logical_unit_idWHERE lu.canonical_address LIKE 'D38-DIEU28-%'GROUP BY uv.lifecycle_status;
   

   Expected: draft=27.
4. Run review query if needed:

   SELECT uv.review_state, count(*) ...
   

   Expected: unreviewed=27.
5. Fetch/use verified render.sql from KB package or existing artifact; verify SHA 478d2115ded1e472b580c250a166945b4989d6e76019a5748a3012db168874e9 before use.
6. Render via SSH; no mutation.
7. Clean render to markdown using the same general rules from Execute R2.
8. Diff against KB source knowledge/dev/laws/dieu28-display-technology-law.md SHA fa5ed5c1f6a6ab70f69f48e0bd3a2e4d822eb6b672a1c2b2313edd23f3277d7b.
9. Generate tree report.
10. Create rollback instructions document only; do not execute rollback.
11. Upload follow-up report + render + diff + tree + logs to KB.
12. STOP. Do not close out P10B inside this follow-up.

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6. Boundary

No further DB mutation is authorized.

If render/diff fails, report FAIL and STOP. Do not repair data and do not rollback without a separate GPT decision.