Migration guide from json-render

Is your feature request related to a problem? Please describe.

Nice library. I'm currently using json-render for generative ui. This new lib seems more promising. If there is a migration guide, that'd be great.

Describe the solution you'd like

A migrate guide on the doc website.

Describe alternatives you've considered

I can ask ai to do the migration directly. (Tradeoff is there might be some gotchas we miss.)

Additional context

A more convicing comparison between json-render and openui would be greater.