Looks like a neat little language. I didn't see anything especially novel that other languages would want to steal though. The CLI parsing stuff is very similar to Typer, or clap_derive. Arbitrary precision integers are in Python (though I wish more scripting languages would do this too). Zig has great C interop.

I wish it was an embeddable language like Lua though - there are a gazillion languages that are similar to this that you can use for non-embeddable cases... But there are very very few statically typed embeddable scripting languages. The only ones I know of are Gluon, which leans waaaay too far into the obscure functional stuff for a scripting language... and AngelScript which is just a bit too ancient and Javaesque for me.