Hi! Prodigy is a fully standalone compiled React app already – so the easiest way to integrate it into your existing app would be to load it within an iframe, using the local URL you'll use to serve Prodigy.
You could also add some functionality to your app that lets you enter the Prodigy command and starts the Prodigy server. For instance, add a text field, post the result to your endpoint, call prodigy.serve on the server and then load the host/port in your iframe.