Love it! Same here. bin/ is a convention I picked up from Rails and thoughtbot over the years. I also have bin/staging and bin/prod for data fixes, deploy helpers, and querying the DB, alongside bin/test and bin/dev.
Yeah, I've used bin/ and scripts/ in the past as well as _scripts/ ... but I just like the ergonomics of run/foo... run/api, run/ui, run/api-test, ... etc.
I'm usually working in a subproject, so it's usually ../../run/foo in practice, but still.
I'm usually working in a subproject, so it's usually ../../run/foo in practice, but still.