fix login

frontend/src/services/api.ts

@@ -41,7 +41,10 @@ class ApiClient {
         if (error.response?.status === 401) {
           localStorage.removeItem('access_token');
           localStorage.removeItem('refresh_token');
-          window.location.href = '/login';
+          // Redirect only if not already on login/register page
+          if (!['/login', '/register'].includes(window.location.pathname)) {
+            window.location.href = '/login';
+          }
         }
         return Promise.reject(error);
       }