Ultra action button - unlock door without unlocking phone?

I am the new owner of an Apple Watch Ultra. Really enjoying the look and features (ok, mainly the look). I was excited about the Action button functional possibilities, but am limited in my knowledge of Shortcuts. I really need to just buy McSparky’s filed guide (or Rosemary’s book - or both!). Maybe one day…

All I was really hoping to do was be able to assign a shortcut to unlock my Front Door with that button. My lock is a Yale lock that works with the August app. I have it set up in HomeKit, and Siri works with it. But, as far as I can tell, I don’t know of a way to have a shortcut run without the phone being unlocked.

I was hoping to push the action button, and voila – unlock my door. Surely this is possible?