Add Rust authoring Skills

[gvozdvmozgu]

I haven’t looked into Agent Skills yet (I’m using Codex; I think they recently added support too), but it seems useful to add this: https://gist.github.com/davidbarsky/8fae6dc45c294297db582378284bd1f2

[benfdking]

It looks like it tries to enforce standards. Which were you thinking might be useful?

[gvozdvmozgu]

I think it makes sense to explicitly encourage using let ... else, since it’s a relatively new feature, and I’ve noticed Codex (at least) rarely uses it—if at all.

The Type Safety part also seems appropriate.

Also, there’s a SKILL-3.md that explains how to do search/replace via rust-analyzer. Not sure if it’s actually better than standard search (maybe it will keep the context less cluttered?).

[benfdking]

Go for it. Happy to try it. It doesn't really add/clutter anything in the core code base. It just makes our generation better. My only concern is that it might become slop we don't maintain as things evolve. Slightly like the current CLAUDE.md file that I have forgotten to keep up to date fully.