>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #3538845. --> Reported by: [d34dman](https://www.drupal.org/user/751698) >>> <ul> <li>Manual testing: <ul> <li>Verify API endpoints return JSON data for nodes and workflows.</li> <li>Confirm Svelte UI loads correctly on the admin route.</li> <li>Drag-and-drop mock nodes on the canvas.</li> </ul> </li> <li>Add a kernel test for the API endpoint permissions and serialization.</li> </ul>