The backup/restore tool runs in the browser, using the file management APIs. You could certainly script a browser to do that via selenium or something.
Another path could be to poke them using the APIs. Check out @pixie 's midnight commander plugin of example:
and @zranger1’s client library:
The .pbb format is a JSON file with base64 encoded files, so you could use the UI to get an archive and parse it in a tool to automate bringup for copies.
Regarding DHCP specifically, I don’t know if this would be easy to tap in to on the PB side for custom provisioning, like I’ve done with bootstrapping linux installs.
The APIs now are HTTP, fully curl-able and scriptable. Initial wifi setup could be scripted as well by scanning for new APs, connecting, and posting to the wifi config form endpoint.
I’ve definitely considered some kind of git integration. There’s a destructured format for patterns I have in mind that would make it much easier to manage via git, and having a repo backing the community patterns is on my list.