Thanks @edwardtfn, that allowed it to compile with Fahrenheit, but the only impact is that
The home screen (which has always been in Fahrenheit as I want) now shows 151°F (where it used to be accurate)
The climate page has the same behavior as described in the OP but the Fahrenheit temperature (which was Celsius before adding target_low: "60") is close to accurate (but a little higher than my phone), though the slider behavior is still in Celsius with the same behavior as in the video from the original post
Thanks @edwardtfn, that allowed it to compile with Fahrenheit, but the only impact is that
_Originally posted by @JS1Dev in https://github.com/Blackymas/NSPanel_HA_Blueprint/issues/1627#issuecomment-1892894035_