I'm always wondering about the, I don't even know what to call this, etiquette? of proposing PR's to projects like these that add a feature or a demo or whatnot to the main branch of a very focused project by adding something that is very different in interface, language, set and setting etc. So in this case, Tobi made this awesome little web interface that uses minimal HTML and JS as to stay in line with llama.cpp's…
My view is you get so many people blatantly ripping off your code to try and pass it off as their own that you actually appreciate when you come across someone doing something novel or interesting that users like. That was my view anyway.