Hi!
At my place, the heating is managed by Gladys.
For the minimum temperature, it’s a simple scene that activates if the temperature is below 17°C with no condition (well, actually I have a ‹ frost protection › mode).
To turn off the boiler, I switch it off if it’s 18°C or more and we’re not in comfort mode.
Trigger: temperature >18°C
Get last state of the heating mode
Continue only if different from comfort mode
Turn off the heating.
All the details are here, in the ‹ Programming › section:
https://community.gladysassistant.com/t/tutoriel-maj-thermostat-fait-maison-et-integration-programmation-dans-gladys