So you essentially have a DMZ between your VPS and home network that is divided by your reverse proxy?

Most users have no use for a static adress space. Those are usually business or power-user needs.
This you are classified as that. A power-user.

I saw several solutions on Github that could migrate it.
Assuming you use/-d trakt you could use that to re-import the watch history

Not listening habits. But symphonium can do genre and general mix.
And honestly it keeps you fron hearing all the same stuff in every mix like Spotify (and seemingly Plexamp) does

I find it how many useres here almost scream “The year of linux” every day for every little grain of news Windows comes up.
And yet they do literally the same with Plex.

My suggestion: Get Symphonium in addition/to replace Finamp.
Much more advanced in what it can do.
Only downsode: You can’t exclude libraries. If you have a soundtrack-like library separate from the regular music library, it can’t be separated.

*For now

If you wanna mirror the movies: syncthing
Remote: Depends on if you want to install a jump station you VNC/RDP/Teamviewer in or directly access it.

Tag them beforehand with Lidarr. Works very well for me.

Even if you arent sure and gemerated double entries.
IMO there should be a “Generate” button

Deploy the backup (or some part of it) to a test system. If it can boot or you can get the files back, they work.

Yes.
But the menu is after you generate a new password (at least in the extension)
Thus you might not know if the password is a new one or the one you generated. And that might confuse some.

Too bad it auto-generates a new one in the same menu :)