From the landing page:

> 66,183 lines of hand-written real-mode assembly

Goes to the github - contributers jggonz and CLAUDE. The README.md doubles down on this at the bottom with the license.

> Everything here is hand-written; no third-party code is vendored into the OS, so the whole tree is covered by that one license.

That's what happens when you let an LLM write your ad-copy...