This is cool. It took me a while to figure out that you want people to click the test button on the sidebar to try it out, not the "Test model" buttons unit tests in the bottom right side. Unit tests might benefit from a different kind of icon. I tried the "Interactive Mode" toggle button too, and that didn't do anything obvious.
Thanks for checking us out! We sort of anticipated that — we just launched the unit test feature this week, and it’s not easily distinguished from the test panel. We’ll probably rename the test panel to something more descriptive, like API runner.
Interactive mode is a feature to set interactive breakpoints in your code, it’s really useful for iterating on individual blocks of code without having to run the entire app E2E.
