P3D Pack 1 Phase 5C1 — rev3 Advisory Lock + Log Patch Report

Date: 2026-05-11 Author: Opus 4.7 Mode: PROMPT PATCH ONLY — no execution

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1. Status flags

phase5c1_rev3_status                 = PASS
advisory_lock_added                  = true
mandatory_execution_log_added        = true
rollback_reference_fallback_added    = true
species_identity_unchanged           = true
transaction_structure_unchanged      = true
prompt_dispatch_allowed              = false_until_GPT_FINAL_REVIEW_AND_USER_GO

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2. Top 5 rev3 fixes

1. §1B Mandatory execution log — VPS log opened BEFORE any DB action. Captures: introspection, precommit targets, advisory lock, captured ids, COMMIT/ROLLBACK outcome, KB upload status, committed rollback keys. If log cannot be opened → ABORT.

2. §4.0 Advisory lock — pg_advisory_xact_lock(hashtext('p3d_pack1_phase5c1_information_unit_species_mapping_backfill')) inside transaction, before stale rechecks. Transaction-scoped (auto-released on COMMIT/ROLLBACK). Prevents concurrent Agent runs from double-inserting species/mapping. Lock string is pack-scope constant.

3. Rollback reference fallback rule — 4 states: both (KB + VPS), vps_log (KB failed = PARTIAL_LOGGED), kb (VPS missing), none (CRITICAL FAILURE → immediate GPT/User alert).

4. Report flags added — advisory_lock_acquired, execution_log_path, execution_log_contains_committed_keys, kb_report_upload_status, rollback_reference_available.

5. No content changes — species identity, transaction steps, stop gates, capture lifecycle, default introspection all unchanged from rev2. Rev3 is purely additive safety.

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3. Confirmation

✓ Advisory lock prevents concurrent execution
✓ Execution log = last-resort rollback key reference
✓ Fallback rule covers KB upload failure
✓ Species identity, transaction, gates unchanged
✓ rev3 DISPATCH CANDIDATE — GPT final review + User GO required

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Phase 5C1 rev3 Patch Report | Advisory lock + execution log | 2026-05-11