Very cool. I’ve done similar layouts but not so far as creating my own highlighting and keywords. Tbh, I prefer pen and paper for my “real life” stuff as I don’t want to be so tied to the computer/phone. But for work, where I’ll be at the computer anyway, I might steal some of these ideas.

I use chezmoi for tracking dotfiles and used to use a fancy Ansible setup. Now, I just occasionally backup a list of explicitly installed packages and track the major changes made to the system in a simple Markdown file.