I don’t see that there’s any sort of integration for writing code to process information from HA entities like Node Red + Companion. Am I missing something and this is more than just an interface for the config files and maybe a git client for those config files?
VSCode in HA is primarily useful for editing config files and with all the latest pushes towards config in the UI it’s not as useful as it used to be. That said, it does integrate with HA to provide completion for entities and some basic yaml validation.
I also use it to work on ESPhome configs as well as some simple file management. I never got SSH working correctly on the HA VM and VSCode has been a convenient workaround.