Does it have to be SFTP?
I use both Syncthing and Resiliosync - both are better on battery than conventional file transfer mechanisms, and they don’t require babysitting. They simply sync files as you define.
Alternatively if you must have FTP/SFTP, I have used FolderSync (Play store or Apk Mirror) since about 2010 - I’ve even bought it twice because it’s such a great app. Though I haven’t upgraded in a while because I don’t like the new UI.
The free version does pretty much everything the paid version does, and the devs have always been great.
But I’d use Syncthing, you can even set it to only sync on your wifi and while charging, though I’ve found even syncing a few gigs doesn’t impact my battery (I probably sync 10GB a day while on battery).







Its really to compensate for the lack of framers.
Five years ago the average age of a framer was 55.
This is what happens when you don’t have a new generation of people trained to do something - constructors have no choice but to use automation.
I’m not blaming anyone - its just an observation of pressures. Framing’s a tough job.
There will be massive outlays for the systems, they’ll probably be leased or you’ll have companies that specialise in managing the system, and as a GC you’ll contract them to implement the design.