Why did HA cloud turn on my heater without my knowledge or explicit authorization?

[grand vector]

I woke up to my shop wood burning pellet stove being turned on by HA CLOUD (not by me or any automation) after explicitly turning it off yesterday. I was nowhere near my shop at 7:47PM. It was locked, and furthermore, nobody but me knows how to turn it on.

This is VERY concerning....

changed to Heat triggered by action Climate: Turn on
7:47:23 PM - 13 hours ago - Home Assistant Cloud

turned off triggered by action Climate: Turn off
4:53:52 PM - 16 hours ago - Jazzmonger

Shop Wood Pellet Stove changed to Heat triggered by action Climate: Turn on
3:28:57 PM - 18 hours ago - Jazzmonger

I have no automations on this entity to control on/off.
This has NEVER happened before in the 7 years I've been a Nabu Casa paid subscriber. How can I find out WHY this happened.
Is there a dev debug log somewhere?

Why did HA cloud turn on my heater without my knowledge?

Why did HA cloud turn on my heater without my knowledge or explicit authorization?

[sour field]

Do you use Alexa or Google Assistant?

For instance, using the Alexa app to turn something on or off, I will get logbook entries such as this:

So Frosty light turned off through Home Assistant Cloud. Without the context of the other entry below it, this might appear as though it were done "by Home Assistant Cloud".