feat: add core domain types for Photo Gallery SDK including media items, albums, and annotations

vendor/photo-gallery-sdk/src/hooks/useMediaQuery.ts

@@ -0,0 +1,24 @@
+'use client';
+
+import { useEffect, useState } from 'react';
+
+/** SSR-safe media-query hook. */
+export function useMediaQuery(query: string): boolean {
+  const [matches, setMatches] = useState(false);
+
+  useEffect(() => {
+    if (typeof window === 'undefined' || !window.matchMedia) return;
+    const mq = window.matchMedia(query);
+    const update = () => setMatches(mq.matches);
+    update();
+    mq.addEventListener('change', update);
+    return () => mq.removeEventListener('change', update);
+  }, [query]);
+
+  return matches;
+}
+
+/** True on phone-sized viewports (the sidebar becomes an overlay drawer). */
+export function useIsMobile(): boolean {
+  return useMediaQuery('(max-width: 760px)');
+}