Hmm ... I've thought about doing something like this with a self-hosted wiki. I do have a Pine64 en route, so maybe that can be something else to add to it....
It shouldn't be hard. As I said, I did mine with just HTML with some m4 macros for common variables and partials. I build my entire site and upload it with a "make install" command. A self-hosted wiki on a Pine64 shouldn't be much harder. :)