🩹 Fix: Fenix Active profile sensor could not be enabled (#9)
The sensor declared the config entity category, which Home Assistant rejects for sensors on every supported version — enabling it produced Entity … cannot be added as the entity category is set to config. It is diagnostic now, so Fenix users can enable it and see which program the panel has selected (kept in the device shadow, so it stays correct while the heater is off).
The test harness now also enables every disabled-by-default entity and requires a state for each — this class of bug is caught before release from now on.
Coming next (beta): switching Fenix heating profiles from Home Assistant via PATCH /devices/profile, so a target temperature is no longer silently overridden by the active profile. Thanks @fasdav for the measured report.