@mtross @chhitz so.. this is the version where everything should work, however it's implemented vs a not yet existing API and is thus untested. In addition some minor changes will be required when the API gets modified as we discussed.
What should be testable so far: since no devices marked as "FCU" via the model features are around, the "Edit device value" dialog in the zones tab and the dialogs in the scenes tab, both integrated and in the apartment view, should behave the same as before for all present devices.
implements #16120