Merge two Roam Databases?

symlinks is a good solution for a part of the problem but I specifically am looking for a way to merge two existing databases. I’m visualizing something akin to resolving merge conflicts with git would work reasonably well, just need to account for the fact that the file names aren’t actually the same because they include a timestamp. (Now that I think about it, I guess rsync wouldn’t work for the same reason)

Btw, I haven’t used the tags feature yet, is there a place this is documented? All I can find is this discussion but the links from there are 404