First - thank you @dianoga for the Nest Device! I was able to get it setup and it appears functional as a device.
However, when I go to add an App (e.g. “Thermostat Window Check” by @imbrianj or the default “Keep Me Cozy” app) I’m not able to select one of my Nest tstats as a Thermostat.
Is there anything else I need to do to get them to show up?