08 - Cross-Layer Boundary Self-Review

The recheck-4 patch added a construction-document content-address (the approval envelope) + four authoring-time verification guards + guard-quality rule 9. It changed no runtime/cross-layer boundary and no invariant.

boundary / invariant	state	basis
implementation authoring	BLOCKED; PKG-A now also gated on a SEALED, verified envelope	doc 07; G-ACTIVE-AUTHORITY-APPROVAL-ENVELOPE
Stage 2.6B	BLOCKED_UNTIL_AUTHORITY	doc 08 §A
qt001_backfill_permit / permit	BLOCKED (distinct from operator_authorization)	doc 07/08; G-NO-QT001-PERMIT-DURING-FIX7
REAL_RUN / QT001 apply	BLOCKED_UNTIL_AUTHORITY	doc 08 §A
manifest activation / repoint / owner-ACL cutover	OPERATOR_GATED, blocked	doc 04/07
27 authority surfaces	PRESERVED	the envelope is non-runtime; adds no surface
11 runtime-evidence tables	PRESERVED	unchanged
14 readiness gates (DATA)	PRESERVED; 0 new	the 4 new guards are TEST/VERIFICATION, not gates
7 top-level runtime hash contracts H01..H07	PRESERVED; the envelope is NOT an 8th	doc 06 + doc 00 explicit
0 new #20 column / catalog family	PRESERVED	the envelope is document metadata, not a DB object
Option Beta / set separation / STUB removal / DO_NOT_TOUCH removal / PG-native-final	NOT reopened	preserved verbatim (recheck-4 accepted)

The envelope is an authoring-time construction-document integrity artifact. It governs which blueprint documents may be authored from, not any runtime DB object. Codex recheck-4's INVARIANTS_BOUNDARY_FINAL_ACCEPTED and PG_NATIVE_FINAL_ACCEPTED are preserved.

Verdict

Cross-layer boundaries PASS — every live gate remains blocked; no invariant regressed; no runtime design changed.