Function stopPolling

src/pages/PrescriberPage.tsx:78–83

()

  }, [loading]);

  const stopPolling = () => {
    if (pollTimer.current) {
      window.clearInterval(pollTimer.current);
      pollTimer.current = null;
    }
  };
  useEffect(() => () => stopPolling(), []);

  // ── 寻书 ──