I looked at the repo again in more detail; and I must admit that I got distracted by the comments and missed out on the intent behind your demo.

While I am not a fan of the interactive demo before you can start using an app, I think that what you've shared is: 1. not that and 2. looks excellent for presentations and landing pages.

My feedback still stands, but I was imagining a much different use case which may not align closely with your product.

Random thought: it may be cool to see this implemented in a "picture-in-picture" fashion on a documentation site where the documentation scrolls to the relevant area as you navigate the app in the pip window.