Thanks to this response and this one, I realized that I Orgzly actually can be used with the local file system, I was just trying to sync a whole folder hierarchy and Orgzly wants to do it folder-by-folder (and manage everything in one big flat file).
I’ve been using it for about a day now and it’s actually working for me! Thanks @ryanprior and @hanno!
@pganssle @hanno I'm glad that's working so far!