[nerdponx]

Wow, this is great!

Conceivably someone could write an offline annotation viewer/editor as well? I would love for something like that to catch on.

Imagine Emacs and Pycharm plugins for viewing and editing these annotations, for example.

[Sir_Cmpwn]

Yep, you could. One thing which would be super cool is highlighting a snippet of code, entering an annotation, and having it uploaded to git.sr.ht right there.