global fix and add tauri app

tauri_app/src/App.tsx

@@ -0,0 +1,32 @@
+import { useState } from 'react';
+import { MobileShell, type MobileTab } from './components/mobile-shell';
+import { LoginScreen } from './features/auth/login-screen';
+import { ChatsScreen } from './features/chat/chats-screen';
+import { SecurityScreen } from './features/security/security-screen';
+import { TotpScreen } from './features/totp/totp-screen';
+import { MobileAuthProvider, useMobileAuth } from './lib/auth';
+
+function AppContent() {
+  const { isAuthenticated } = useMobileAuth();
+  const [activeTab, setActiveTab] = useState<MobileTab>('security');
+
+  if (!isAuthenticated) {
+    return <LoginScreen />;
+  }
+
+  return (
+    <MobileShell activeTab={activeTab} onTabChange={setActiveTab}>
+      {activeTab === 'chats' ? <ChatsScreen /> : null}
+      {activeTab === 'totp' ? <TotpScreen /> : null}
+      {activeTab === 'security' ? <SecurityScreen /> : null}
+    </MobileShell>
+  );
+}
+
+export function App() {
+  return (
+    <MobileAuthProvider>
+      <AppContent />
+    </MobileAuthProvider>
+  );
+}