Check K - Authoring Planning Readiness

Verdict: AUTHORING_PLANNING_NEEDS_T1_FIX

Package boundaries and phase order remain usable; no runtime design amendment is open. Implementation-authoring planning cannot be approved because Codex could not execute the complete seal.

Required next phase: T1 narrow patch for executable canonical extraction/escaping/schema and a non-circular detached trust anchor, followed by focused Codex seal recheck. Production implementation remains unauthorized.