Hello, and thanks a lot for this amazing project. i really love it.
Just one suggestion. there is a library called: ReadLine that will add a lot of cool features to console applications. for example, you can provide auto-suggestion, auto-completion, etc.. with it.
Clink extensively use it and to be honest, clink+cmd is an amazing experience for me:
https://chrisant996.github.io/clink/
I hope TermiC also integrates it into itself.