I built HostsTray https://github.com/maxmart/hoststray

It's kind of like SwitchHosts but also has a reverse HTTPS proxy builtin, that installs a self-signed CA and generates certs on-the-fly. Also it forces browser to "flush" their DNS by killing the keep-alive connections that for example Chrome keeps open. And it can be controlled by your local coding agent through a simple API (which also serves the skill for it)