The agent session ids currently in the room.
The facilitator agent session id, when one is designated; otherwise null.
Epoch-ms the current floor holder took the floor, or null when the floor is free.
The agent session id currently holding the floor (speaking), or null when the floor is free.
The room's external id (the shared external connection id / ConversationID all agents key on).
The live floor state of a room, returned by MultiAgentRoomCoordinator.GetRoomState for observability and tests.