#64 FTX-64: Review page conformance

UB-AW-4 fields (tenant name, title, step+policy version, expiry/SLA, submitter, proposed_action, context, banners); reason_code select from policy snapshot catalog + reason_text (AC-4 web, AC-14); non_actionable page (ST-AW-1); done/expired pages; mobile-usable (NF-AW-1). Phase 6.