Strit

If you can live without the dedicated GPU for the media center, you can get an Intel CPU instead, which have QuickSync for media transcoding. It will use a fraction of the power a dedicated GPU does with the same workload.

That's likely the place you can gain most power effeciency.

Any caldav web app should be able to do it.

Any reason it needs to be a webapp and not a native app for your OS?

Can the peertube user actually read the mapped /dev/dri path?

You know what is running on your Pi, right? Just check the configs of those services and see if any are still using old.home.lab.

Thunderbird is my primary email client, so better dark-mode is a welcome addition. UI couuld use a lift in general, but I don't mind it looking a bit dated. As long as it does what it should and does not eat all my systems resources while doing it.

curl to sudo bash is not an install path I would recommend or choose. :P

Good thing I'm on Arch. They got the patched sudo package some days ago. :)

The hardware in your server should be able to handle 50-60 degrees for a long period of time, so going to 35 ambiant shouldn't be a problem.

It should. My comment was in relation to point 2, as I stated in the comment.

2. This will only work until the package containing the sounds gets updated again, then it's back to square one.

Reason. The default in packaging switched to the wayland session.

So my point still stands. You want to break the DRM on those downloads because you want to self-host it, but I still think it would be against their TOS. So in essence you are asking how to break Spotity DRM against their terms.