I'd like a full GUI text editing tool that transparently opens and saves files over ssh or sftp as a built-in feature. I tested remote-edit with Atom and opening files doesn't work. Additionally the documentation for the workflow (add host, open file, save file) is missing or nonexistent and none appears to exist on the internet.
All of this must be built into one program, no extra side setup such as sshfs or remote disk mounts. Additionally the remote editing must use a standard ssh or sftp server backend with no additional setup such as rmate. I shouldn't have to do any more setup than providing hostname/IP address and login info for ssh/sftp.