Hacker News Reader

I was looking for such a tool (I use Markdown), but in the end I kept using Git. It turns out it’s also pretty good for non-code content :)

Agreed. But I need non-coder noobs to also use it (i.e., an Editor, fellow writers without dev background).

I suppose I could write them something with big easy buttons that only performs the actions they need.

Git has plenty of open source GUIs that would help.