0aaea8efb5
Assign logged only the assignee (user_id), archive/unarchive logged nothing. Migration 018 adds actor_user_id/actor_service_account_id to incident_events for 'assigned'; archive/unarchive now log archived/unarchived events with the caller via callerActorIDs. Timeline JSON gains actor_* fields; web timeline renders them. Service accounts are still not assignable.