SUPERSEDED - Codex FIX7 Final Hardcode / PG-Native-Driven Design Review

T1 deep verification found this architecture review insufficient as an implementation specification. Current authority is knowledge/dev/reports/architecture/checkpoint-codex-fix7-implementation-spec-completion-2026-06-07.md. T1 must review the completed specification before implementation. Historical architecture verdict is not implementation authorization. Stage 2.6B/apply/permits remain blocked.