Check out VR Chat if you have a computer (no VR headset needed). You can turn down the settings really far if your computer struggles with stuff.
If you haven't heard about it, it's basically a proximity chat game just centered around talking to people or playing social games. There are VR bars and stuff.
Signal dropping SMS support is just so confusing. Keep SMS until many people have converted. You can always remove SMS later when it finally fades away.
SMS support was dropped because people were using Signal thinking their conversations were encrypted and it was only through unencrypted SMS. It's hard to sell the privacy part of Signal when it's not actually guaranteed, so they got rid of that.
sqlite should be okay but redis helps with loading. It caches pages or something, basically does all the work of building the web pages before they're actually requested so it isn't done on the fly.
My Nextcloud set up on my i5-4690k was painfully slow as well because I didn't have redis. I never got it set up properly and gave up.
There's no hard limit or standard, but I think 14 TB might be the largest you could find in a consumer HDD. The WD EasyStore goes on sale pretty often and sells for a good deal. Those should be quiet and already come in an external case. Look for reviews about it before buying.
The sound is determined by what kind of drive it is. Consumer drives are for in-home use and are usually quiet. Enterprise drives are for dedicated server rooms or data centers and can get loud because it's loud in there already.
I would recommend sticking with consumer level HDDs if this is a concern. The cost per TB isn't as good.
I bought a 14 TB Seagate Exos and put it in a Fractal R5, which is a very good noise insulating case. I can hear clicking from anywhere on the same floor as that machine if I listen for it.
You could maybe pair two consumer drives together in JBOD to get the space you want, but that's more expensive.
The part itself don't need to be sterile. The important part is maintaining sterile technique, which is the main issue with catheters due to the area involved and the amount of tubing that goes in.
Whether or not the stuff is actually sterile doesn't matter.
I don't think it monitors stuff consistently, or if it does, I don't know how to utilize it.
YouTubeDL-Material supports playlists and subscriptions.