Thanks! This is indeed originally intended as a note-taking tool. After a prototype for that I realized its potential to become a generic UI framework, so I worked towards this library instead.

At some point I'll probably link it back to the original tool, so keep watch if you're interested.

That's quite true. It's not meant to be a panacea, but I hope it can be useful in situations where tree-like relationships are pervasive (like comment sections, for example).

I agree some aspects of the mobile experience is suboptimal so far. I hope it can be improved in the future :)

Thank you for your advice. I would very much like to depend on native scrolling for managing positions, except that I ran into some roadblocks early on and resorted to javascript. But I will look into CSS scroll snap for this.