I had the some problem, and several months ago (8?) I put together a small python script that I run that handles saving for me seamlessly. It also keeps around

I had the some problem, and several months ago (8?) I put together a small python script that I run that handles saving for me seamlessly. It also keeps around a handful of backups for each wiki, and provides an index page so I can swap between different wikis as I need to. I'm now all-in on TiddlyWiki and I've never been happier. I manage about a dozen or so wikis this way. I haven't yet gotten around to properly hosting the source code publicly, but it's just a single python file that I run locally. To actually replicate the wikis between my devices, I use Syncthing. I'll be happy to put the source code up if folks are interested...it'll probably take only an hour or so.