- Each étape shows an "Ajouter une tâche" button at the bottom when expanded
- Clicking opens an inline text input with Enter to submit, Escape to cancel
- Created tasks are linked to the étape via parent_task_id
- Purple "Ajouter" button with instant feedback
- Uses existing useCreateTask hook with correct tablo_id and parent_task_id
Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>