Sounds like a guide to me ☺️
The registry is one of the reasons I was thinking I would need separate prefixes that I can copy. But, I also understand that games that actually use the registry are few and far between. If I actually come across one that needs registry edits I can just pack that differently.
I use obsidian for my notes/wiki. I use the git plugin to backup/sync my notes. I self-host forgejo as my gut server. Works great!
Caddy is my favorite reverse-proxy. The setup is just a config file.