fix(library): resolve root folder rename, open in explorer, open at location centering, UPDATE rescan bug, and optimize scan RAM memory usage

docker/frontend/src/api.ts

@@ -353,4 +353,7 @@ export const api = {
     if (!res.ok) throw new Error(body.error ?? `HTTP ${res.status}`);
     return body as unknown as { user: User };
   },
+
+  // Open photo location in native system file manager (Windows Explorer / Finder / Linux file manager)
+  openExplorer: (path: string) => call<{ ok: boolean }>('/open-explorer', { method: 'POST', body: JSON.stringify({ path }) }),
 };