Okay, but then why not make this a new sort of fuzzy language, rather than building a new app with it's own UI?

I think having to open a web interface is a big entry barrier.

Imagine if those pseudocode files could live in your codebase, and the CLI tool would just “build” the actual code, with sourcemaps. You could edit the code in your favorite editor and run “build” commands in your favorite shell.

(TBH, I haven't looked deeply inside the repo and maybe it's exactly how it works. I just saw that demo and readme tell you to open a http://localhost:5173 as if you can use it only via custom UI.)

I'm not sure how to do syntax highlighting for this pseudocode in any IDE, but you could start with supporting something like Alabaster theme, the whole point of which is to highlight as little as possible.

I say this because I really think that if the setup was simpler lots of people would use it. It's a kind of concept that when you read about it, you think “Wait, how did I not came up with this”. Finally some interesting concept in this endless stream of skills, MCPs, loops etc.