GPT Review — R1/R2 Results + DIEU-32 Root-Cause Required Before Policy — 2026-05-14

Scope reviewed

Reviewed:

• Consolidated status: knowledge/dev/laws/dieu44-trien-khai/reports/p3d-phase5c2-r1-r2-consolidated-status-report.md
• DIEU-32 block report: knowledge/dev/laws/dieu44-trien-khai/reports/p3d-phase5c2-r2-dieu32-pilot-migration-execution-report.md
• Opus review: knowledge/dev/laws/dieu44-trien-khai/reviews/opus-review-r1-retry-r2-consolidated-results-2026-05-14.md
• Historical DIEU-32 TAC execution: knowledge/dev/laws/dieu38-trien-khai/reports/p10b-1c-d32-execute-report-2026-04-29.md
• DIEU-32 segmentation candidate: knowledge/dev/laws/dieu38-trien-khai/reports/p10b-1a-d32-segmentation-candidate-2026-04-29.md

Verdict

Status: ACCEPT_63_ROWS_PASS__DO_NOT_CLASSIFY_DIEU32_AS_BAD_SOURCE__ROOT_CAUSE_REQUIRED

DIEU-35 and DIEU-28 PASS are accepted.

DIEU-32 must not be concluded one-sidedly as a bad/defective law. Historical TAC evidence shows DIEU-32 was a complete law in TAC and round-tripped with 0 content drift. Current R2 block is a schema/policy impedance mismatch that requires root-cause classification before deciding whether to synthesize body from title, patch TAC, or adjust IU cutter policy.

Accepted results

phase5c2_retry_r1_status=PASS
r2_dieu28_status=PASS
r2_dieu32_status=BLOCKED_BEFORE_BEGIN
total_publications_committed=2
total_iu_created_committed=63
total_uv_created_committed=63
total_birth_created_committed=63
tac_source_untouched=true
pre_existing_iu_untouched=true
ui_cutover_performed=false
vector_work_performed=false
bulk_migration_performed=false
v3_patched_semantics_used=true
cross_system_hash_equality_used_as_gate=false

DIEU-32 facts

The R2 executor found:

DIEU-32 source_count_live=23
body_null_count=4
NULL-body rows:
- D38-DIEU32-ROOT
- D38-DIEU32-S2
- D38-DIEU32-S3
- D38-DIEU32-S4
all section_type=heading

The historical TAC execution report says DIEU-32 P10B-1C PASS:

• 1 publication + 23 logical units + 23 unit versions + 23 publication members inserted.
• Clean render produced 5601 chars.
• Diff original vs reconstructed = empty.
• Normalized comparison identical.
• Round-trip 0 content drift confirmed.
• Conversion rules intentionally rendered ROOT/title/headings from title plus child/body composition.

Therefore, the four NULL bodies are not enough to call DIEU-32 “law lỗi”. They may be intentional heading/container units in TAC where title carries the visible content and body is absent.

Why Opus recommendation is incomplete

Opus recommended synthesize_title for heading NULL bodies. This is plausible, but not yet sufficiently proven as the correct general rule.

We must classify the root cause first:

1. INTENTIONAL_TAC_HEADING_CONTAINER — TAC allows heading-only units with body NULL; render uses title as visible content. Then IU cutter needs an explicit heading-body policy.
2. TAC_INSERT_PACKAGE_BUG — the original insert package should have populated body but did not; render hid this because title was enough.
3. TAC_TO_IU_MODEL_GAP — IU fn_iu_create requires body, while TAC can represent title-only structure. Then solution is a sanctioned conversion rule, not content repair.
4. DATA_LOSS_OR_DRIFT — unlikely because P10B-1C reports 0 drift, but must be ruled out by comparing current TAC render to original KB law.

Interim decision

Do not retry DIEU-32 yet.

Do not patch TAC blindly.

Do not synthesize title blindly.

Do a read-only root-cause investigation comparing:

• current TAC rows for DIEU-32;
• historical segmentation candidate;
• historical execution/render report;
• original KB law knowledge/dev/laws/dieu32-approval-law.md if available;
• current TAC render behavior;
• IU fn_iu_create requirement that body is non-null.

Likely policy direction, not final until investigation

If root cause is confirmed as INTENTIONAL_TAC_HEADING_CONTAINER or TAC_TO_IU_MODEL_GAP, then approve a governed policy:

heading_null_body_policy=synthesize_title_for_IU_body

Conditions:

• Only applies when section_type='heading' and source body IS NULL.
• Use title as IU body because title is the visible textual content of the heading unit.
• Mark provenance explicitly:
  • identity_profile.body_source = 'synthesized_from_title_due_to_tac_heading_null_body'
  • content_profile.body_source = same
  • preserve src_body_was_null=true
  • preserve source title and source IDs.
• V-3b must become conditional:
  • if source body non-null: IU body equals source body;
  • if heading body null and approved policy applies: IU body equals source title and provenance flags are present.
• This is not semantic repair and not content invention; it is a representation conversion from TAC heading model to IU body-required model.

If root cause is TAC_INSERT_PACKAGE_BUG, then fix TAC upstream first and retry with body preservation.

If root cause is DATA_LOSS_OR_DRIFT, stop and escalate.

Strategic automation direction

The user’s target is correct: eventually the interface should be as simple as:

Cắt luật A

The system must then know how to:

• locate source;
• segment or read existing TAC;
• classify unit types;
• apply governed heading/container policies;
• validate vocab;
• create IU via canonical writer;
• birth objects;
• write rollback keys;
• attach provenance;
• propose/create typed professional edges;
• render/assemble/check drift.

The current manual run is acceptable only as bootstrapping. The next mainline after finishing the 86 TAC units must be dot-iu-cutter / automated cutter design.

Next action

Create and run read-only Agent prompt:

knowledge/dev/laws/dieu44-trien-khai/prompts/agent-dieu32-null-heading-root-cause-investigation-2026-05-14.md

No mutation. No TAC fix. No IU write.

Final flags

gpt_review_status=PASS_WITH_DIEU32_ROOT_CAUSE_GATE
dieu35_accepted=true
dieu28_accepted=true
dieu32_not_classified_as_bad_law=true
dieu32_retry_allowed=false_until_root_cause_review
synthesize_title_policy_allowed=false_until_root_cause_review
automated_cutter_design_next_after_dieu32_resolution=true