It's public, but I doubt it still compiles against recent LLVM versions! I started it 8 years ago to get a better understanding how features like classes & operator overload would work in a JS-like language. It was really fun!
I remember that at the time there were very few resources on personality functions, even in the LLVM doc - I had to make a lot of research before finding your articles, which were extremely helpful!
I got reminded of them yesterday after someone pinged me on a Stack Overflow answer I made at the time, asking for an updated link; after I found your long-form article I figured it would be a good topic for HN as well :)
I tried to set http301s but gave up when I had to pay for it :)