fix(ui): CommandPalette outside Router context — white page fix; remove PWA; fix CSP for Google Fonts

frontend/src/App.tsx

@@ -7,8 +7,7 @@ import { useThemeStore } from '@/store/themeStore';
 import { ErrorBoundary } from '@/components/common/ErrorBoundary';
 import { useToast } from '@/components/ui/Toast';
 import { useOnlineStatus } from '@/hooks/useOnlineStatus';
-import { CommandPalette } from '@/components/search/CommandPalette';
-import { useCommandPalette } from '@/hooks/useCommandPalette';
+
 
 function QueryClientWrapper({ children }: { children: React.ReactNode }) {
   const toast = useToast();
@@ -81,7 +80,6 @@ export default function App() {
       <ErrorBoundary>
         <AppRouter />
       </ErrorBoundary>
-      <CommandPalette />
     </QueryClientWrapper>
   );
 }