I recently setup my home lab in a way that kind of replicates their end goals and it wasn't hard:

1. Beefy M6 Mini as the server. UTM managed MacOS VMs with screen sharing enabled. 1 VM per project. Set the Mini and VMs to never go to sleep. 2. Secondary Macbook Air -- I screenshare into the VM for the project I want to work on and do work from there. I can close the laptop at any time and not worry about agents stopping. 3. With Tailscale on all machines I can work from anywhere.