You can then access the note on every computer where you replicate that folder.
This doesn't cover accessing from mobile or computers you don't own but it's just a different kind of a problem of auth.
Edna is actually a self-contained go binary that you could run yourself on a server or your desktop.
Currently the backend (Go server) is there to just serve HTTP files but it wouldn't be hard to add storage API to Go server and modify Edna to use that. I already have 2 storage backends: local storage and file system api.
I would say it would be at most a few days of work to make it work similarly to SB but that's not something I plan right now. I still have some UI functionality to add to Edna and then we'll see.
Earlier I also made a fork of silverbullet: https://notedapp.dev/ with similar goals to Edna (which is a fork of heynote).
But don't use it. I stopped working on it half-way. In retrospect, I've made a mistake there of doing my note storage backend.
Then I was thinking about re-starting it and re-doing the backend for notedapp but then I saw heynote and used that as a based and I'm quite happy with the result.
I do like SilverBullet so it's a possibility that I'll do another project which combines the UX ideas of Edna with SilverBullet editing UI. But for now I still have some ideas for Edna, will keep me busy for at least a week :)
SB can be hosted on Docker, which has the benefit of being able to access your data from any device. Do you have any such plans for Edna?