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  @@ -42,7 +42,15 @@ NotificationsDrawer  const { items } = useNotifications();− useEffect(() => { if (open) refetch(); });+ const socket = useNotificationSocket();+ useEffect(() => {+   if (!open) return;+   return socket.on('notification:new',+     (n) => setItems((p) => [n, ...p]));+ }, [open, socket]);  return <Drawer open={open}>

  @@ -8,6 +8,18 @@ useNotificationSocket  const socket = useSocket();+ const on = useCallback((evt, fn) => {+   socket.on(evt, fn);+   return () => socket.off(evt, fn);+ }, [socket]);− return socket;+ return { on };

  @@ -0,0 +1,4 @@+ it('appends a pushed notification',+   async () => {+   render(<NotificationsDrawer open />);+   socket.emit('notification:new', n);+   expect(await findByText(n.title))+     .toBeVisible();