So awesome! Actually, working on something somewhat similar called Codeflow (https://usecodeflow.com/). Right now, we have a web app where people can create these walkthroughs/tours but wanted to ultimately create an IDE extension. Love what you've done thus far.
Oh cool! Yeah, we are definitely kindred spirits :) I wanted to start with VS Code (in order to scratch my own itch), but I’m now working on a browser “player” and looking into GitHub integration (https://github.com/vsls-contrib/codetour/issues/10).
I love seeing other folks investing in this space. Thanks for sharing!