As cool as this technically is - who is the target market for this? I think people building coding agents and coding agent platforms are for the most part building on non-Cloudflare sandboxes, and can tolerate minutes of latency for setup.
I am not sure what people who roll their own in-house solutions for coding agents do, but I suspect that the easy path is still one of the many sandbox providers + GitHub.
I would love to find out who would use this & why!