Query DarkReader if dark mode is enabled or not

[listvin]

Somewhat related to Disable Dark Reader on my website

Consider the following case:
I have a page, that manages dark mode on it's own: supports auto via media-query, user can override to dark or light.
The problem is not all browsers on all platforms support system's dark mode detection. I believe quite common combo: Chrome on Linux Mint with Cinnamon (afair it's even worse on xfce even with Firefox).

So I added <meta name="darkreader-lock">, but then comes the user with poor browser<->OS communication, who is vampire enough to manually toggle dark reader twice a day like myself.

As a workaround I see that I can dynamically add darkreader-lock, only when I already activated page's dark theme, so DR can kick in and override. After that I can observe mutations and when I see "meta[name=darkreader]", switch to my own dark and disable DR with lock. As to me it seems a bit over-complicated bicycle...

Is there a better way already?
Is there any APIs exposed by DR? I believe some other use cases could beneift, e.g. #11450