Typing a hash (#) in VSC pulls up a bunch of datapacks, it'd be really awesome if this included recipes made in KubeJS so we don't have to go searching for old code if we need to copy something quickly.

I don't think it would be a good idea, KubeJS creates recipes with a dynamic, unique id, if such recipes are also pulled, there'll be a lot of noise in the recipe. (Like #kubejs:.../kjs_xxxxxx)