GPT Review — 09 Minimal Implementation Planning Pack

Date: 2026-05-04 Method: GPT checked actual KB document knowledge/dev/laws/dieu44-trien-khai/design/09-iu0-minimal-implementation-planning-pack.md rev 1, not only Opus report.

Verdict

PASS as planning direction, but NOT ready to ask User to open P44-6 yet.

Plain image: the plan sketches the foundation for the new cabinet, but before pouring concrete we must mark the exact load-bearing joints: birth order, U9/container rule, delete field, and pilot mode boundaries.

Checks

• Header/range: planning only, no DDL/code, no P44-6 opened — PASS.
• Core schema direction: information_unit + unit_version + JSONB profiles aligns with IU-0 modular baseline — PASS.
• CRUD hot path: PG-local only, vector via outbox cold path — PASS.
• Legacy vector safety: no mutation of production_documents — PASS.
• Conflict requiring patch before next gate:
  1. Circular birth sequencing: information_unit.version_anchor_ref points to unit_version, while create flow inserts information_unit before unit_version; birth gate timing must be clarified.
  2. deleted_at is used in CRUD delete flow but absent from the logical table sketch.
  3. U9 is described as nullable while Tier-0 strict language says 15 elements; need clarify root/container handling for pilot.
  4. Publication required fields are said to be resolved via parent/publication, but publication table is deferred; need explicit pilot placeholder/warn semantics.
  5. Implementation sequencing says each step is one APR/prompt; too granular. Group into 3 bounded packs to reduce handoff overhead.

Directive

Opus should patch 09 to 09.1 only, not rewrite:

• Add a §2.4 Creation transaction/birth gate timing.
• Add deleted_at / retired_at or explicitly mark delete lifecycle field in logical schema.
• Clarify U9/container/publication handling in pilot mode.
• Clarify publication profile required fields under pilot warn mode.
• Compress I-1..I-8 into 3 implementation packs: vocab + schema, CRUD/version smoke, outbox/vector-prep.
• Add a “P44-6 pre-open checklist” and stop there.

After 09.1, GPT/User can decide whether to open P44-6. No Agent dispatch yet.