Thermostat card not resolving hvac action

[abenak]

Admittedly, I am on 0.106.6 of Home Assistant Core; however, looking at the code on the dev branch still confirms this.

I have a GC-TBZ48 GoControl Z-Wave thermostat. This thermostat does support your standard idle, cooling, and heating. I've found that it also supports pending heat and presumably the flipside as well.

When it is pending heat, the thermostat does not display the current action. From what I see, line 189 of the thermostat card shows it trying to resolve the string with localization. In localization line 34 , this string is unmapped.

How should I go about extending the localization object? I tried to add a local (inside /config) translations dir, adding a sensor.en.yaml. Nothing happened.

Thanks in advance.