Thank you! I was looking into doing something like this myself, but hadn't taken much effort yet to figure it out.
Backstory: I've been using Joplin as my primary note taking system / personal information manager for a few years. While I'm generally happy with it, I do wish I could just use the filesystem itself rather than an abstraction layer on top of it, as I'd love to be able to perform bulk operations using standard *nix tools, and perform versioning with git. Since I'm using Hugo for my personal homepage and looking to use it with a few other projects, I find myself doing a lot of copypasta between when an idea becomes enough of a "thing" to warrant becoming a post or page. I think something like this could help me bridge that gap.