>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #3538880. --> Reported by: [d34dman](https://www.drupal.org/user/751698) >>> <ul> <li>Maintain a single reactive store for: <ul> <li>Node list and positions</li> <li>Edges with source/target references</li> <li>Selected node and edge state</li> </ul> </li> <li><del>Support undo/redo in-memory for node/edge placement (optional for MVP)</del>.</li> </ul>