fix: My Computer hiển thị ổ đĩa/thư mục, fallback khi client handle hết quyền

app/static/js/app.jsx

@@ -9301,17 +9301,30 @@ const MediaExplorerPanel = ({ height }) => {
     let savedHandle = null;
     try { savedHandle = await loadClientRootHandle(); } catch (e) {}
     if (savedHandle && savedHandle.kind === 'directory') {
-      setComputerMode('client');
-      setClientRoot(savedHandle);
-      const rootEntry = { name: savedHandle.name, path: 'root', is_dir: true, handle: savedHandle };
-      setComputerRoots([rootEntry]);
-      setComputerPath('root');
-      setComputerFiles([]);
-      const browsed = await browseComputerDir(rootEntry);
-      if (browsed && browsed.dirs) {
-        browsed.dirs.slice(0, 10).forEach(d => browseComputerDir(d));
+      // Yêu cầu lại quyền đọc (permission có thể bị thu hồi sau reload)
+      let permitted = true;
+      try {
+        if (typeof savedHandle.queryPermission === 'function') {
+          const st = await savedHandle.queryPermission({ mode: 'read' });
+          if (st !== 'granted' && typeof savedHandle.requestPermission === 'function') {
+            const r = await savedHandle.requestPermission({ mode: 'read' });
+            permitted = r === 'granted';
+          }
+        }
+      } catch (e) { permitted = false; }
+      if (permitted) {
+        setComputerMode('client');
+        setClientRoot(savedHandle);
+        const rootEntry = { name: savedHandle.name, path: 'root', is_dir: true, handle: savedHandle };
+        setComputerRoots([rootEntry]);
+        setComputerPath('root');
+        setComputerFiles([]);
+        const browsed = await browseComputerDir(rootEntry);
+        if (browsed && browsed.dirs && browsed.dirs.length) {
+          browsed.dirs.slice(0, 10).forEach(d => browseComputerDir(d));
+          return;
+        }
       }
-      return;
     }
     // Auto-scan ổ đĩa/thư mục hệ thống (server API = máy local), không mở hộp thoại picker
     setComputerMode('server');