00 — Codex FIX7 Final Design Approval — Readme First

Date: 2026-06-08 Reviewer: Codex (design owner, final-approval authority) Mode: READ-ONLY production. No mutation of production DB / roles / grants / triggers / functions / scheduler / UI / REAL_RUN / permits / ledgers / QT001 apply / source IU / services. No live SQL applied. No manifest activated. No ownership/ACL change. No permit opened. Stage 2.6B not entered. KB design-approval artifacts only.

Purpose

Final design-approval review after T1 returned DESIGN_READY_FOR_CODEX_FINAL_APPROVAL on the FIX7 chain. This is not implementation, not a redesign, not a from-scratch re-audit. Per the quota-saving directive, Codex verifies T1's final PASS, confirms the final design state, and formally approves the design only if no direct contradiction is found.

State transition

From: FIX7_CP06_HASH_SPEC_PATCHED_READY_FOR_T1_FINAL_SHORT_REVIEW To: FIX7_DESIGN_OFFICIALLY_APPROVED_FOR_IMPLEMENTATION_PLANNING

Headline

FIX7_DESIGN_OFFICIALLY_APPROVED_FOR_IMPLEMENTATION_PLANNING. All six final-approval checks A–F PASS. Zero blocking proposals. One optional, non-blocking editorial note (OBS-01) carried forward for optional cleanup at promotion. No contradiction found in T1's final review; no old issue reopened.

Six checks (one line each)

• CHECK A — T1 final PASS integrity: T1_FINAL_PASS_CONFIRMED. T1 returned DESIGN_READY_FOR_CODEX_FINAL_APPROVAL; checkpoint + 11 report docs readable; 0 blocking proposals; OBS-01 editorial only.
• CHECK B — CP-06 micro-patch acceptance: CP06_PATCH_ACCEPTED. P-01 evidence-deref, P-02 eight-key H04_SCOPE_V1, P-03 H05/H02 membership + total orders, P-04 fail-closed extra-index disposition all accepted; T1's reading matches the patch text exactly.
• CHECK C — Non-regression: NON_REGRESSION_ACCEPTED. Exactly 27 authority surfaces; 11 non-authority runtime-evidence tables; 0 new readiness gates; 0 new hash contracts; no RP-01..08 / CP-01..09 regression; all hard blocks intact.
• CHECK D — Zero-hardcode: ZERO_HARDCODE_FINAL_ACCEPTED. No hardcode / disguised hardcode / hidden CASE / numeric-literal-as-authority / mutable denominator / Directus-editable authority / arbitrary identity string / MD5-delimiter hash / source-text-as-authority / existence-as-proof / routed-later-without-blocking-now.
• CHECK E — PG-first/native/driven: PG_NATIVE_DRIVEN_FINAL_ACCEPTED. Truth in PostgreSQL; PG-native enforcement; manifest/rule-driven; no policy embedded in functions; exact-set sealed readiness; control-plane-forced writer; Directus cannot mutate authority after cutover; readiness blocked before cutover.
• CHECK F — Feasibility/scale: FEASIBILITY_SCALE_FINAL_ACCEPTED. Feasible on PG16.13 + pgcrypto; object-count-independent; no hot-path full scan / row-by-row apply / unbounded hash / unbounded recursion / production-blocking lock introduced; rollback returns safe-blocked; implementation can proceed later without guessing after explicit authorization.

What approval means — and does NOT mean

• Means: the FIX7 design is the official approved design baseline; the next phase (a separate implementation-planning / authoring phase) may be authorized.
• Does NOT mean: production implementation may start now. Implementation, Stage 2.6B, permit, REAL_RUN, QT001 apply, and owner/ACL cutover remain BLOCKED until each is explicitly authorized at its own gate later.

Doc map

01 T1 final PASS confirmation (CHECK A) · 02 CP-06 patch acceptance (CHECK B) · 03 non-regression (CHECK C) · 04 zero-hardcode (CHECK D) · 05 PG-native/driven (CHECK E) · 06 feasibility/scale (CHECK F) · 07 final approval verdict.

Inputs read

• T1 final short-review: …/t1-fix7-final-short-review-after-cp06-patch-2026-06-08/00..10 + checkpoint (all 12 readable).
• CP-06 micro-patch: …/codex-fix7-cp06-hash-micro-patch-from-t1-proposals-2026-06-07/00..06 + checkpoint.
• Prior design-correction checkpoint: …/checkpoint-codex-fix7-design-correction-from-t1-rp-refinements-2026-06-07.md (rev 2).
• BIRTH_GATEWAY_DESIGN_INDEX.md (rev 25) — 27-surface / hard-block baseline.
• Law prompt-muc-tieu-mo-for-claude-code.md (v1.3, confirmed) — read-only / design-only / phase-gate posture; full text not re-read per the quota-saving directive (T1 already verified §3.4/§4F/§4G/§4H/§4I/§5/§6 alignment; index + prior record corroborate).

Hard blocks unchanged

Implementation, Stage 2.6B, permit, REAL_RUN, QT001 apply, owner/ACL cutover — all BLOCKED. Production READ-ONLY throughout.