After a lot of back and forth I went with a simple syncthing everywhere. Lightweight, no server, easy to use, all files are replicated. It sounds like I'd need

After a lot of back and forth I went with a simple syncthing everywhere. Lightweight, no server, easy to use, all files are replicated. It sounds like I'd need a lot of storage space but it's not that much and in the end it forces me to think about whether everything is worth remembering. "Losing" data that turned out to not be that important definitively lifts a weight off your shoulders