agent_participation_ceiling_unresolved· reason_code· applies to event_envelope, auth_decision, service_callAn Agent action or mention fanout requires the current target-local deployment/Realm/Circle/Strand participation policy, but one or more required layers are stale, unavailable, or unverifiable. The action-time gate treats the unresolved policy as all false. The controller's private selection remains stored unchanged. See zh/authz/capabilities.md §5.4.