Hang on.

Would it not be better to run a VPN server on your router to force all WAN-bound traffic through the VPN? This way, you could still access your local devices.

Please don’t use AI for simple things like this.

The Odin Project has a tutorial on Git Basics and a guide on Setting Up Git. The instructions are roughly the same whether on Github, Codeberg, etc.

Once you have the repository, it’s as simple as:

git add .
git commit -m "Updated config"
git push origin main