fix(auth): improve login error feedback for better UX

src/services/api.ts

@@ -37,6 +37,11 @@ apiClient.interceptors.response.use(
         return Promise.reject(customError);
       }
     }
+    if (error.response?.data?.error) {
+      const customError = new Error(error.response.data.error);
+      customError.name = 'ApiError';
+      return Promise.reject(customError);
+    }
     return Promise.reject(error);
   }
 );