KB-4213

T1 FIX7 Recheck-5 Canonical-Envelope Patch - Final Verdict

5 min read Revision 1

12 - Final Verdict

Final status

FIX7_REFACTOR_BLUEPRINT_T1_PATCHED_AFTER_CODEX_RECHECK_5_READY_FOR_CODEX_RECHECK_6

Summary

Codex recheck 5 accepted the approval-envelope direction, the guard rebinding, and the invariants/boundary, but did not seal — six canonical-encoding / seal / anchor blockers. T1 patched all six in-blueprint; no runtime design amendment; nothing accepted reopened.

  • A Canonical hash encoding FIX7-CANON-V1 (byte-exact, domain-separated, ordered, reproducible) for every aggregate; membership recomputed over full doc_ids = f2bda8ef…fe251. +G-CANONICAL-ENCODING-CONTRACT.
  • B envelope_manifest_sha256 binds the complete authority-field roster (closed set); unknown/missing field fails closed. +G-ENVELOPE-MANIFEST-AUTHORITY-COMPLETE.
  • C doc 00 self-reference resolved (Option 1): full_document_sha256 diagnostic; normalized_active_content_sha256 excludes the envelope region.
  • D blueprint checkpoint = NON_AUTHORITY_INDEX (REPORT_ONLY); not a member/self-host; consumed by no guard/package.
  • E Codex detached seal anchor with a compensating fail-closed rule for the missing crypto signature (revision + SHA-256 + MCP read-back + mismatch guard). +G-CODEX-DETACHED-SEAL-ANCHOR.
  • F five fail-closed guards re-bound to the canonical digests + detached seal; guard-quality rule 10.

Guards 51 → 54. Invariants 27/11/14/7 preserved (non-runtime construction-document content-address; no 8th runtime hash contract; H01..H07 stay 7). Adversarial canonicalization self-audit 12/12 PASS, computationally verified.

Self-check (Codex-style)

# check verdict
1 canonical encoding byte-exact per aggregate (domain tag/order/sort/separators/newline/null/bool/path/revision/trailing-LF/command) PASS (doc 02)
2 no aggregate hash prose-only or unordered-serialization PASS (G-CANONICAL-ENCODING-CONTRACT)
3 manifest binds the complete authority-field roster; unknown/missing → fail closed PASS (doc 03)
4 doc 00 self-reference resolved cleanly (one model, no contradiction) PASS (Option 1, doc 04)
5 blueprint checkpoint classified; no guard/package relies on it PASS (doc 05)
6 Codex detached seal anchor defined; immutable by revision+SHA-256+read-back; signature-absence compensated PASS (doc 06)
7 fail-closed guards depend on canonical hashes + detached seal PASS (doc 07)
8 adversarial canonicalization self-audit (12 tests), hash cases computed PASS (doc 08)
9 hardcode/PG-native: no disguised hardcode; no runtime surface added PASS (doc 09)
10 cross-layer: 27/11/14/7 preserved; all hard blocks intact; nothing reopened PASS (doc 10)
11 membership hash reproducible (shasum == hashlib) = f2bda8ef…fe251 PASS (doc 02/08)
12 self-reference second-order hole found in self-review, not at recheck PASS (doc 08 test 5)

Internal self-check: 12/12 PASS.

Why READY_FOR_CODEX_RECHECK_6 (not the other allowed statuses)

  • Not ..._NEEDS_MORE_T1_WORK: all six blockers are patched in-blueprint; the canonical encoding, complete manifest, self-reference resolution, checkpoint classification, detached-seal contract, three new guards + five re-bound guards are in place; the 12-scenario self-audit passes (hash cases computed, not asserted).
  • Not ..._FAIL_HARDCODE_OR_PG_NATIVE_GAP: the patch REMOVES mutable-authority paths by content-addressing them; it adds no runtime authority/surface; Codex's accepted invariants/boundary are preserved.
  • Not READ_PATH_BLOCKED: the recheck-5 package, the recheck-4 patch, the current blueprint, and the approval sources were all readable read-only.

What Codex must do at recheck 6 (the seal)

Compute every aggregate by FIX7-CANON-V1 over the approved content; confirm the canonical membership f2bda8ef…fe251; record the per-document/aggregate content hashes + the complete manifest; set the approval metadata; flip envelope_state to SEALED; and author the CODEX_DETACHED_SEAL block in the recheck-6 checkpoint (the immutable copy of record). Blueprint doc 12 asks 8–14 enumerate this.

Boundaries

Do not claim implementation approval. Implementation, Stage 2.6B, qt001_backfill_permit, REAL_RUN, QT001 apply, manifest activation, repoint, and owner/ACL cutover all remain BLOCKED. Production was READ-ONLY throughout. Next is Codex recheck 6 only — which seals the canonical envelope and writes the Codex detached seal.

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