Change AI escalation rules and knowledge-gap behavior

Update the existing guest-facing escalation policy using a fresh get_ai_handoff_policy read and expectedPolicyVersion. enabled and the complete intents array are required; preserve IDs/fields of rules you intend to retain. Omit knowledgeGapBehavior or workingHours to preserve them. New rules may omit id and receive a service-generated stable ID; inspect returned IDs. Normally at most eight rules; existing oversized policies can only shrink without adding IDs. propertyIds must reference active properties from list_properties. Working hours require all seven distinct days with valid HH:mm times in the business timezone. A 409 conflict requires reload/reconciliation. The service schedules existing handoff projections after saving; on uncertain failure read current policy before retrying. This affects future escalation and projection state; it does not resolve cases, send a guest reply, or enable server knowledge-gap rollout gates. Required permission: ai_settings:write. Connected business only.