I built a similar idea as a hobby project to see what was possible with harnesses. My idea was give a model a chat input, but outputs can be data models (sqlite), and panels that are custom react components that can be generated and mounted on the fly by the model.

The basic idea in todo list form was:

"Let's build a todo model to manage my daily tasks, then build a task list panel where i see today's todos."

It got more interesting from there as I kept building ontop of it. For example, I added data hooks (trigger something when data changes, e.g. custom code or even webhooks) and it felt like an AI native Airtable.

Everything persists and becomes the UI of the app itself.