I think code documentation works best when it lives side by side with the code it is documenting rather than being written in a separate document. When it's separate, it becomes easy for documentation to become stale. Out of sight, out of mind!
Have you struggled to figure out a good way to test your Netlify Functions? As you start to make more use of functions, you really need to have good unit tests in place for peace of mind during production deploys.
Core Web Vitals are all the rage right now because of effect they might have on search rankings. I'm passionate about website performance and thought it might be nice to make more of a feature of Core Web Vitals on my personal site.