Checkpoint — Codex FIX7 N7/N8/P7 Authority-Seal Authoring

• Final status: CODEX_FIX7_N7_N8_P7_AUTHORITY_SEAL_REJECTED
• Production mutation: NO
• Implementation execution: NO
• N7/N8/P7 authored: NO / NO / NO

All engineering packets and Codex-owned probes pass. Official authoring is rejected atomically because exact owner A5 OPT-3_... violates the pinned encoder's [A-Z0-9_] decision-token grammar and raises SEAL_FIELD_BAD_ENUM.

No authority input was normalized or fabricated. No partial seal exists.