It may come across harsh but IMHO the only interesting thing about this project is that it is written in Zig. That's it.

Everything else in the harness is largely the same just Vercel-flavoured.

The portability benefit is also a bit over-sold imho. I wrote a harness in Go and it is as portable as this ... in fact it deploys straight into Vercel's own sandbox environment on demand without any issues.

That being said, did you say GLM 5.2 free? I need to look into that. GLM is remarkably capable model and that alone is worth using the harness in my books.