Yeah, that’s exactly what I meant. But I get that you want to avoid HTML if possible.
If you find a pure markdown alternative, let me know, I was looking at options a while back for a repo and settled on the HTML tag.

Github accepts the details HTML tag as part of Markdown. You could use that to put there a description and it would only be visible if you expand it.

I’ve used it with Python for data extraction and visualization last week. It worked worked surprisingly well 90% of the time. But when it failed to produce the code I wanted, it was difficult to trouble shoot and find a way around.
It helped a lot to break the tasks down as much as possible. It also remembered stylistic guidelines from several prompts ago

I’ve failed to get that to work. How do you actually get additional languages?

I have used both used GitHub for sync and Syncthing. Both work pretty flawless, but I prefer Syncthing (or rather Syncthing-fork).

As far as I remember, synching to mobile is not easy with the GitHub solution (I only used it to sync between two desktops), but Syncthing works great on both mobile and desktop.

I second GitHub Pages! I host a professional website/online CV there with a dot com domain for less than 10€/year. There are Jekyll templates to do that or pay someone to make you some custom CSS and Html that’s easy to maintain.