mimi_governance_binding_missing· reason_code· applies to service_call, state_resolutionA MIMI facade attempted to project room state, groupInfo, key material, or message data into a Arkret Realm without a verifiable Arkret MLS governance binding. Receiver MUST quarantine or reject fail-closed instead of accepting unauthenticated MIMI state as Realm authority. See zh/extensions/mimi-interop.md §4.