Check I - Invariants and Boundary Recheck

Verdict: INVARIANTS_BOUNDARY_FINAL_ACCEPTED

Preserved: exactly 27 authority surfaces, 11 runtime-evidence non-authority tables, 14 readiness gates, and 7 top-level runtime hash contracts. The five added guards are verification guards only. No new runtime authority surface, #20 column, catalog family, or readiness gate is authorized.

Implementation, Stage 2.6B, qt001_backfill_permit, REAL_RUN, QT001 apply, manifest activation, repoint, and owner/ACL cutover remain blocked. Governance reconciliation, registry pivot, Đ43, and harness alignment remain later work.