Add onboarding flow improvements

frontend/src/hooks/useAuth.ts

@@ -0,0 +1,18 @@
+// Mock auth hook for testing
+export const useAuth = () => {
+  return {
+    user: {
+      id: 'user_123',
+      tenant_id: 'tenant_456',
+      email: 'user@example.com',
+      name: 'Usuario Demo'
+    },
+    isAuthenticated: true,
+    login: async (credentials: any) => {
+      console.log('Mock login:', credentials);
+    },
+    logout: () => {
+      console.log('Mock logout');
+    }
+  };
+};