Add end-to-end tests for parent rewards management

- Implement tests for creating, editing, canceling, and deleting rewards in parent mode.
- Include scenarios for converting default rewards to user items and verifying restoration of default rewards after deletion.
- Create a comprehensive test plan outlining the steps and expectations for each scenario.

frontend/vue-app/e2e/.auth/user.json

@@ -2,17 +2,17 @@
   "cookies": [
     {
       "name": "refresh_token",
-      "value": "UF34Tu177HoT6vAaeXU_57FWzSrn4cxis22kSm-blbY",
+      "value": "lEN8eJ_pJ1tcLjsFgkyzCxzsZXn3rjDvdUqoQlcGD1w",
       "domain": "localhost",
       "path": "/api/auth",
-      "expires": 1781108068.947755,
+      "expires": 1781149918.627695,
       "httpOnly": true,
       "secure": true,
       "sameSite": "Strict"
     },
     {
       "name": "access_token",
-      "value": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJlbWFpbCI6ImUyZUB0ZXN0LmNvbSIsInVzZXJfaWQiOiI4ZWM1MDFlYi04ZmY5LTRmZTMtOWY2YS05NGRhMTdlOWIzYjUiLCJ0b2tlbl92ZXJzaW9uIjowLCJleHAiOjE3NzMzMzI5Njh9.7yWiBikfB8RIwvGwEysUO1cjQHGTYVSYgRFPliMVwKs",
+      "value": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJlbWFpbCI6ImUyZUB0ZXN0LmNvbSIsInVzZXJfaWQiOiJkYTM5MDQ0OC04YzFiLTRjYmQtYWNjNi1lNWFmNzM5OTRkNzMiLCJ0b2tlbl92ZXJzaW9uIjowLCJleHAiOjE3NzMzNzQ4MTh9.Imxrgn0cjIfrNne918fLKfsLNcWAG_5FaF0crvYroic",
       "domain": "localhost",
       "path": "/",
       "expires": -1,
@@ -27,11 +27,11 @@
       "localStorage": [
         {
           "name": "authSyncEvent",
-          "value": "{\"type\":\"logout\",\"at\":1773332068608}"
+          "value": "{\"type\":\"logout\",\"at\":1773373918495}"
         },
         {
           "name": "parentAuth",
-          "value": "{\"expiresAt\":1773504869163}"
+          "value": "{\"expiresAt\":1773546718838}"
         }
       ]
     }