Not quite,

Actually...

plus it is aimed at a bbs which isn't the scope of what I want.

No, it is a forum not a BBS, exactly what you are trying to do but with caching. BBS have no point point in the last 20 years, that would just be a website. It's called TokenBB but it is exactly like your demo, it was used by Drug Wars, but that was about it, it died off pretty quickly. Even ChainBB never really seen much use as I believe it was mostly under dev but never promoted as an alternative until BuildTeam forked it to commericialize it.