a large part of the benefit to an agentic ai is that it can coordinate tests that it automatically wrote on an existing code base, a lot of time the only way to get decent answers out of something like that is to let it run as bare metal as it can. I run cursor and the accompanying agents in a snapshot'd VM for this purpose. It's not much different than what you suggest, but the layer of abstraction is far enough for admin-privileged app testing, an unfortunate reality for certain personal projects.

I haven't had a cursor install nuke itself yet, but I have had one fiddling in a parent folder it shouldn't have been able to with workspace protection on..