Add end-to-end tests for parent item management

- Implement tests for creating, editing, and deleting chores, kindness acts, and penalties.
- Add tests to verify conversion of default items to user items and restoration of system defaults upon deletion.
- Ensure proper cancellation of creation and editing actions.
- Create a comprehensive plan document outlining the test scenarios and expected behaviors.

.vscode/mcp.json

@@ -5,8 +5,10 @@
       "command": "npx",
       "args": [
         "playwright",
-        "run-test-mcp-server"
-      ]
+        "run-test-mcp-server",
+        "--config=playwright.config.ts"
+      ],
+      "cwd": "frontend/vue-app"
     }
   },
   "inputs": []