GPT Review — 23-P3D4C1U Execution PASS and Next Directive

Date: 2026-05-08
Reviewer: GPT-5.5 Thinking / Incomex Hội đồng AI
Reviewed:

• knowledge/dev/laws/dieu44-trien-khai/reports/23-p3d4c1u-universal-core-implementation-report.md
• knowledge/dev/laws/dieu44-trien-khai/reviews/opus-review-23-p3d4c1u-execution-pass-2026-05-08.md

Verdict

P3D4C1U PASS confirmed.

Opus review is accepted. Agent execution report is accepted. No immediate repair pack is required before proceeding to handoff / P3D4C2U prompt planning.

Universal event core PoC is now LIVE in production PG for the system_issues domain, using the minimal immediate-only model.

Accepted implementation state

Implemented:

• 5 core tables:
  • event_outbox;
  • event_read;
  • event_subscription;
  • event_type_registry;
  • event_pending as empty delayed-lane seam.
• 1 registry enforcement trigger on event_outbox.
• 1 immediate capture trigger on system_issues.
• 2 access functions:
  • fn_event_unread;
  • fn_event_mark_read.

Not implemented, correctly:

• no worker function;
• no pg_cron install/query/schedule;
• no polling;
• no fn_event_board;
• no event_worker_log;
• no Directus mutation;
• no Nuxt code;
• no IU runtime mutation.

Accepted evidence

• system_issues preflight: 8937 rows, actor source = source_system, tag field = code, 8 existing triggers inventoried.
• IU pre/post snapshot: iu_notification_event=0, iu_notification_read=0, md5 hashes for all three IU functions identical.
• event_outbox idempotency key: (event_domain, event_type, event_subject_table, event_subject_ref) for immediate lane, no occurred_at.
• Registry trigger validates event type, stream and delivery lane.
• Capture trigger is O(1): durable insert + conflict lookup if needed + implicit self-read insert.
• 3 active immediate event types and 1 inactive delayed type seeded.
• 11/11 tests PASS, including idempotency duplicate test and implicit-self to explicit read test.
• event_pending remained empty for immediate PoC.
• Test cleanup complete; zero test residue.
• Rollback plan verified and not executed on success.

Minor deviations — accepted but must be carried forward

D1 — event_subject_ref is text, not uuid

Accepted. system_issues.id is integer, and universal event substrate must support integer, uuid and potentially composite/canonical refs across future domains. Using text is pragmatic and compatible with universalization.

Directive: P3D4C2U projections and future docs must treat event_subject_ref as text, not uuid.

D2 — read_status_source uses explicit instead of explicit_read

Accepted as non-blocking because tests passed and behavior is correct. But this is a contract drift from the prompt wording.

Directive: do not repair immediately unless a future compatibility issue appears. P3D4C2U must reflect the actual live values:

read_status_source IN ('explicit','implicit_self')

If a rename to explicit_read is desired later, it must be a separate tiny normalization pack with data migration and compatibility review. Do not mix it into Directus exposure.

D3 — subscription seed uses actual role/agency conventions

Accepted. Agent seeded agency:sysop and role:health_owner, which is better aligned with governance conventions than the earlier placeholder actors.

Operating lesson confirmed

This pack validates the simpler architecture:

Common single events → immediate durable insert.
Batch/noisy events → delayed pending/worker only when needed.

Do not introduce a worker, cron job, queue or delayed processing unless the event type demonstrably requires debounce, grouping or noise control.

Next required action

Because the session is long and this is a major live production milestone, first create a handoff for the next GPT session.

Directive to Opus — create handoff, not implementation

Create handoff:

knowledge/dev/laws/dieu44-trien-khai/handoffs/gpt-handoff-pack23-p3d4c1u-universal-event-core-live-2026-05-08.md

The handoff must include:

1. Timeline from IU notification to universal PG-to-outside signal architecture.
2. Reason P3D4C1U switched from polling worker to hybrid immediate/delayed.
3. Current live implementation state.
4. Exact objects created.
5. Tests PASS summary.
6. Minor deviations D1/D2/D3 and how to treat them.
7. Hard boundaries still active.
8. Why old IU-specific P3D4C1 remains absorbed/paused.
9. Next likely pack: P3D4C2U_DIRECTUS_DOT_READONLY_EXPOSURE_PROMPT_REVIEW.
10. Warning: no Directus/Nuxt exposure has been approved yet.
11. First action for next GPT session.

After handoff

After GPT/User review the handoff, Opus may be asked to draft P3D4C2U prompt.

Expected P3D4C2U scope, not yet approved:

• Directus DOT-driven read-only exposure for universal event board.
• Read-only views/projections only.
• No Nuxt code unless explicitly approved.
• No mutation/write/mark-read from Directus yet unless separately reviewed.
• Must expose actual live schema values, including event_subject_ref text and read_status_source='explicit'|'implicit_self'.
• Must not touch IU notification runtime.
• Must not add worker/cron.

Hard boundaries for next step

• No implementation during handoff creation.
• No PG mutation.
• No Directus mutation.
• No Nuxt code.
• No Hermes.
• No Codex dispatch.
• No old IU-specific P3D4C1 resume.
• No worker/cron unless future delayed-lane pack explicitly justifies it.
• No body/raw payload/vector/secret exposure.

Final status

phase_status=PASS
universal_event_core_live=true
poc_domain=system_issues
delivery_model=HYBRID_WITH_IMMEDIATE_POC
worker_created=NO_DEFERRED
pg_cron_used=false
idle_polling_avoided=true
iu_runtime_unchanged=true
next_required_action=CREATE_HANDOFF
next_likely_pack=P3D4C2U_DIRECTUS_DOT_READONLY_EXPOSURE_PROMPT_REVIEW