feat(stock): /stock/screener 페이지 골격 + hooks 4개 + 컴포넌트 stub 6개

src/pages/stock/screener/hooks/useScreenerMeta.js

@@ -0,0 +1,11 @@
+import { useEffect, useState } from 'react';
+import { getScreenerNodes } from '../../../../api';
+
+export function useScreenerMeta() {
+  const [meta, setMeta] = useState(null);
+  const [loading, setLoading] = useState(true);
+  useEffect(() => {
+    getScreenerNodes().then((m) => { setMeta(m); setLoading(false); });
+  }, []);
+  return { meta, loading };
+}