feat: User onboarding finished

frontend/src/core/auth/Auth0Provider.tsx

@@ -26,8 +26,12 @@ export const Auth0Provider: React.FC<Auth0ProviderProps> = ({ children }) => {
 
   const onRedirectCallback = (appState?: { returnTo?: string }) => {
     console.log('[Auth0Provider] Redirect callback triggered', { appState, returnTo: appState?.returnTo });
-    const target = appState?.returnTo || '/garage';
-    navigate(target, { replace: true });
+    // Route to callback page which will check user status and redirect appropriately
+    // Pass the intended destination as state for after status check
+    navigate('/callback', {
+      replace: true,
+      state: { returnTo: appState?.returnTo || '/garage' },
+    });
   };
 
   return (

frontend/src/core/auth/useUserStatus.ts

@@ -0,0 +1,25 @@
+/**
+ * @ai-summary React Query hook for user status (email verification + onboarding)
+ * @ai-context Used by CallbackPage to determine routing after Auth0 callback
+ */
+
+import { useQuery } from '@tanstack/react-query';
+import { useAuth0 } from '@auth0/auth0-react';
+import { authApi } from '../../features/auth/api/auth.api';
+import { UserStatusResponse } from '../../features/auth/types/auth.types';
+
+interface UseUserStatusOptions {
+  enabled?: boolean;
+}
+
+export const useUserStatus = (options?: UseUserStatusOptions) => {
+  const { isAuthenticated, isLoading: isAuthLoading } = useAuth0();
+
+  return useQuery<UserStatusResponse>({
+    queryKey: ['userStatus'],
+    queryFn: authApi.getUserStatus,
+    enabled: (options?.enabled !== false) && isAuthenticated && !isAuthLoading,
+    retry: 2,
+    staleTime: 30000, // Cache for 30 seconds
+  });
+};