As the videos show, there are still a few usability issues. Full-screen switching somewhere else just to enter a name for example doesn't get you very far.

But there is not much missing and I like the POC!

The code editor is for the EYG language and implemented in Gleam. So that's a blocker. The editor is probably far enough along to have a crack at it by EYG would need some UI or web library so that EYG was able to build an editor.