Refactor Site Builder Integration and Update Docker Configuration

- Merged the site builder functionality into the main app, enhancing the SiteBuilderWizard component with new steps and improved UI.
- Updated the Docker Compose configuration by removing the separate site builder service and integrating its functionality into the igny8_sites service.
- Enhanced Vite configuration to support code-splitting for builder routes, optimizing loading times.
- Updated package dependencies to include new libraries for state management and form handling.

sites/src/shared/ProtectedRoute.tsx

@@ -0,0 +1,44 @@
+import { useEffect, useState } from 'react';
+import { Navigate, useLocation } from 'react-router-dom';
+
+/**
+ * ProtectedRoute component that checks for authentication token.
+ * Redirects to login if not authenticated.
+ */
+interface ProtectedRouteProps {
+  children: React.ReactNode;
+}
+
+export default function ProtectedRoute({ children }: ProtectedRouteProps) {
+  const [isAuthenticated, setIsAuthenticated] = useState<boolean | null>(null);
+  const location = useLocation();
+
+  useEffect(() => {
+    // Check for JWT token in localStorage
+    const token = localStorage.getItem('auth-storage');
+    if (token) {
+      try {
+        const authData = JSON.parse(token);
+        setIsAuthenticated(!!authData?.state?.token);
+      } catch {
+        setIsAuthenticated(false);
+      }
+    } else {
+      setIsAuthenticated(false);
+    }
+  }, []);
+
+  if (isAuthenticated === null) {
+    // Still checking authentication
+    return <div>Checking authentication...</div>;
+  }
+
+  if (!isAuthenticated) {
+    // Redirect to login (or main app login page)
+    // In production, this might redirect to app.igny8.com/login
+    return <Navigate to="/login" state={{ from: location }} replace />;
+  }
+
+  return <>{children}</>;
+}
+