use *;
/// Hub-internal LWW guard: the newest event applied per entity.
/// id = "{item_type}:{item_id}". `ApplyLogEntry` consults this before
/// emitting an unwrapped event so that out-of-arrival-order events cannot
/// clobber newer state (CLIs get the same guarantee by sorting the full log
/// before replay; the hub applies incrementally and needs the marker).