fix: Remove unused import in ProtectedRoute (Refs #2)

Frontend/src/api/client.ts

@@ -1,5 +1,5 @@
-import { LoginRequest, RegisterRequest, AuthResponse, RegisterResponse } from '../types/auth';
-import { User } from '../types/user';
+import type { LoginRequest, RegisterRequest, AuthResponse, RegisterResponse } from '../types/auth';
+import type { User } from '../types/user';
 
 const API_URL = import.meta.env.VITE_API_URL || '';
 
@@ -24,10 +24,12 @@ class ApiClient {
       throw new Error('Unauthorized');
     }
     
-    if (!response.ok) {
-      const errorData = await response.json().catch(() => ({}));
-      throw new Error(errorData.message || `Error ${response.status}`);
-    }
+if (!response.ok) {
+       const errorData = await response.json().catch(() => ({}));
+       // Handle both { error: "message" } and { message: "..." } formats
+       const errorMessage = errorData.error || errorData.message || `Error ${response.status}`;
+       throw new Error(errorMessage);
+     }
     
     return response.json();
   }