[pvg]

Reading material usually can't be a Show HN but you can just post your work without that and say you're involved.

[macintux]

The repo includes runnable code.

> Show HN is for something you've made that other people can play with… On topic: things people can run on their computers or hold in their hands

[pvg]

A lot of writing includes runnable code and isn't a Show HN. It's a comparatively narrow category.