HANDOFF — IU-0 Full Draft (từ phiên S190+ sang phiên mới)

Tạo: 2026-05-03 | Phiên: S190+ | Mục tiêu phiên sau: IU-0 Full Draft

Tóm tắt phiên S190+

P11E upload → VRC investigation → OGV-0 root cause (zombie resurrection) → OGV-P0 fix (2-layer defense, orphan 47→0) → Track A residual (trigger persist + audit + backup + re-audit PASS) → IU-0 outline A→E.1 upload → Track A DONE → sẵn sàng IU-0 full draft.

5 quyết định chốt

1. Legacy KB vector giữ nguyên. Track A DONE.
2. IU vector = hệ song song (Phase 0 mapping → Phase 1 IU collection → Phase 2 search adapter → Phase 3 unit-aware chunking).
3. Duplicate KB+IU = collection separation + freshness-based dedup.
4. Vector async delayed outbox (120s, debounce unit_version_id, worker poll 30s, retry 3x). PG CRUD hot path = local PG only.
5. Track A completion = tiền đề đã thỏa.

SSOT cần đọc (batch_read full=true)

1. knowledge/dev/laws/dieu44-trien-khai/design/07-iu0-information-unit-minimum-standard-outline.md — baseline
2. knowledge/dev/laws/dieu44-trien-khai/design/04-information-unit-profile-schema.md — P38-XC UMC
3. knowledge/dev/laws/dieu44-trien-khai/design/03-profile-registry-design.md — P44-3 Profile
4. knowledge/dev/laws/dieu38-trien-khai/reports/vector-reality-check-agent-data-qdrant-2026-05-02.md — VRC
5. knowledge/dev/laws/dieu38-trien-khai/reviews/gpt-review-track-a-residual-complete-2026-05-03.md — Track A DONE

Defaults chốt (không hỏi lại)

Outbox V1-B | quiet 120s | delete 30-60s | all paths enqueue-only | poll 30s | retry 3 | dead-letter manual+alert | debounce IU=unit_version_id | freshness 5 states | Phase 0 = collection separation.

Scope IU-0 Full Draft

Expand OUTLINE-E.1: §0-§13. Focus: §5 Packaging + §5.A CRUD contract + §8 Slice editing. §6 vector giữ VRC evidence, không giả định mới. Design document, không implementation spec. Schema sketch = NON-NORMATIVE. Không DDL/code/P44-6.

Bài học phiên này

"Không chắc đúng = sai" — User nhắc 3 lần. Không viết thiết kế trước khi biết thực tế. §6 vector đã dựa VRC evidence thật — không lặp lại lỗi.