Or maybe something like this:
https://www.securemeters.com/uk/product/room-thermostats/hrt4-zw-asr/
The unit with the buttons on is a simple relay, which hass can control to turn things on and off, and use a heating control with a temperature sensor.
But if you hit the button on the front, it also gives 30 minutes of on, which can be handy if the system had issues.
Or you could have a hass controlled relay, but also leave the old controller wired in on a manual switch.
So if there was a failure, you could go back to the old control by manually flipping it over.
Nice to see NC becoming involved with the board.
I don’t run that much z-wave due to cost, but I’m all for improvements and tighter integration.
Especially since when I do want to spend money, ZW works very well.