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Governance Addendum — T2 FIX7 P0 Dry-Run/Execution-Readiness Independent Review (2026-06-11)

• Host: T2 / CLAUDE CODE / FABLE · Authority: REVIEW_NON_AUTHORITY
• Type: standalone governance addendum reservation. APPLY_NOW = NO. Canonical registry/index NOT folded in this macro.
• Canonical baseline (untouched): registry JSON rev20 (max id 224) / 00-index rev114.
• Ceiling at start: 417 (T1 workspace-sync reserved TKT-OBJ-413..417). This addendum reserves strictly above 417.

Object reservation — TKT-OBJ-418..429 (PROPOSED, APPLY_NOW=NO)

Object	Artifact / purpose
TKT-OBJ-418	T2 independent review report (…independent-review-2026-06-11.md)
TKT-OBJ-419	T2 machine review JSON (…independent-review-2026-06-11.json)
TKT-OBJ-420	T2 independent bad-input probe report (…independent-bad-input-probes-2026-06-11.md)
TKT-OBJ-421	T2 independent bad-input probe JSON (…independent-bad-input-probes-2026-06-11.json)
TKT-OBJ-422	T2 checkpoint (checkpoint-t2-…-2026-06-11.md)
TKT-OBJ-423	T2 current-state (…current-state-2026-06-11.md)
TKT-OBJ-424	This governance addendum
TKT-OBJ-425	Authority-seal digest verification record (N7/N8/P7 + P7-alone boundary)
TKT-OBJ-426	Four-tree byte-exact reconstruction record (dry-run/planning/seal/bundle)
TKT-OBJ-427	Independent fail-closed record (22 T2 probes + tamper, no PASS leak)
TKT-OBJ-428	Rollback hardening recommendation T2-REC-ROLLBACK-HARDENING-1
TKT-OBJ-429	Anti-duplication / duplicate-resolution record

• Existing reserved ranges (collision-checked, 0 collisions): [263–304], [305–325], [326–342], [343–377], [378–388], [389–406], [407–412], [413–417]. This block 418–429 is contiguous above 417.
• Collision scan vs canonical max 224 + all reserved ranges: 0.
• Orphan objects: none (standalone addendum). Canonical fold applied: false.

Duplicate-resolution table (per URGENT ADDENDUM)

Candidate artifact	Existing equivalent?	T2 action	Classification
Dry-run packet	YES — T1 fix7-p0-dryrun-and-execution-readiness-packet-2026-06-11/	reviewed only; not recreated	(existing T1 — not duplicated)
Execution-readiness packet	YES — T1 fix7-p0-execution-readiness-review-packet-…	reviewed only	(existing T1)
Evidence bundle	YES — T1 fix7-p0-codex-review-evidence-bundle-2026-06-11/	reviewed only	(existing T1)
Owner-decision packet	YES — T1 fix7-p0-post-dryrun-owner-operator-decision-packet-…	reviewed only	(existing T1)
Planning packet	YES — T1 fix7-p0-implementation-planning-packet-…	reviewed only	(existing T1)
Authority-seal packet	YES — codex-fix7-n7-n8-p7-authority-seal-reauthor-with-valid-a5-…	reviewed only	(existing T1/Codex)
T2 independent review report/json	NO	created (allowed §6)	KEEP_AS_INDEPENDENT_REVIEW_EVIDENCE
T2 bad-input probe report/json	NO	created (allowed §6)	KEEP_AS_INDEPENDENT_REVIEW_EVIDENCE
T2 checkpoint / current-state / gov addendum	NO	created (allowed §6)	KEEP_AS_INDEPENDENT_REVIEW_EVIDENCE

• Artifacts checked for existing equivalents: 6 (all already exist from T1/Codex).
• Duplicates avoided: second dry-run packet, second execution-readiness packet, second evidence bundle, second owner-decision packet — none authored.
• Duplicates found: none. Duplicates already created by T2: none.
• Resolution recommendation: REVIEW_NOTE_ONLY — every T2 output is review-only and points to existing T1 artifacts; T2 re-authored nothing.
• Objects marked DO_NOT_FOLD / SUPERSEDED: none.
• Deletion performed: NO — nothing to delete; no duplicate created; no evidence-chain artifact touched; auditability preserved.
• Scratch note: /tmp/t2-fix7-verify, /tmp/t2-tamper are local-only verification scratch — non-authority, not referenced by any manifest/HASH_MANIFEST/packet_tree/current-state/checkpoint, not part of any evidence chain.

Fold blocker

T1/T2 canonical-fold race remains open (TKT-BASE-GOV-FOLD-1 / V02-NVSZ-GOV-FOLD-1). Fold is owner/GPT-only and out of scope for this review macro. This addendum stays APPLY_NOW=NO until an authorized ascending fold of the backlog (225..429).