nas-samba: rebuilt as single Ubuntu image with Samba + CloudNAS (no MongoDB)

apps/nas-samba/source/app/frontend/src/App.js

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+import React, { useState, useCallback, useRef, useEffect } from 'react';
+import { Toaster, toast } from 'sonner';
+import { AuthProvider, useAuth } from './context/AuthContext';
+import { ThemeProvider, useTheme } from './context/ThemeContext';
+import LoginPage from './components/LoginPage';
+import Dashboard from './components/Dashboard';
+import SharePage from './components/SharePage';
+import LoadingScreen from './components/ui/LoadingScreen';
+
+function AppContent() {
+  const { user, loading } = useAuth();
+
+  // Handle /share/:token routes without React Router
+  const path = window.location.pathname;
+  const shareMatch = path.match(/^\/share\/([a-f0-9]+)$/);
+  if (shareMatch) {
+    return <SharePage token={shareMatch[1]} />;
+  }
+
+  if (loading) {
+    return <LoadingScreen />;
+  }
+
+  if (!user) {
+    return <LoginPage />;
+  }
+
+  return <Dashboard />;
+}
+
+function App() {
+  return (
+    <ThemeProvider>
+      <AuthProvider>
+        <Toaster 
+          position="top-right" 
+          richColors 
+          closeButton
+          toastOptions={{
+            style: {
+              fontFamily: 'Inter, system-ui, sans-serif',
+            },
+          }}
+        />
+        <AppContent />
+      </AuthProvider>
+    </ThemeProvider>
+  );
+}
+
+export default App;