Observe initial and changed state for one owner, without leaking owner IDs. State requests are coalesced; older epochs/revisions never roll back delivery. Unsubscribing stops this observer; only room-scope disposal releases its slot.
Observe initial and changed state for one owner, without leaking owner IDs. State requests are coalesced; older epochs/revisions never roll back delivery. Unsubscribing stops this observer; only room-scope disposal releases its slot.