Method send

api/src/websocket/collab/room.ts:667–670

(client: ClientID, message: BaseServerMessage)

	}

	send(client: ClientID, message: BaseServerMessage) {
		// Route via Messenger for multi-instance scaling
		this.messenger.sendClient(client, { ...message, type: WS_TYPE.COLLAB, room: this.uid });
	}

	/**
	 * Close the room and clean up shared state