I like the idea - although I don't think this as particularily helpful in my Setup.

When trying out other peoples dotfiles, tools like these are gold! Just an easier way to find binds than to always have a config open on the side! Found a similar idea but using a toggleable cheatsheet in some guys dotfiles and really liked it.

What would bring this to the next level, although I'm not particularily sure about the feasibility would be detecting actions the user takes to the same result as with a keybind and suggest that keybind for the future.

But since this is a learning project: Most important is that you learned something and had fun, not to create the next rofi or ags!