yay it works, all set up.
am editing this with Obsidian on Boox, the md file was generated via markpress, all version-controlled.
OK I can either edit this in Markor or switch to Obsidian, select the newly created file from the vault and edit. there’s no way to immediately open an arbitrary md file.
Obsidian does not handle files the way other apps do. You cannot tell it to open arbitrary markdown files. You must open files from within your vaults. This thread represents the feature request for what you’re looking for, and it is not implemented