My short answer: you're overthinking it way too hard and I think sticking that microSD-Card into the device you want to watch on is your best bet.
You're chasing ghosts.
korn
joined 1 week ago
Your post is very confusing. You want to use it only locally (on your home), but it can't be a local-only instance.
You want to e2ee everything, but fail to mention why. There is no reason to do that on your own network.
I do not know why you want to use a VPN and what you want to do with it. Where do you want to connect to?
What is the attack vector you're worried about? Are there malicious entities on your network?
Vielen Dank, Kapitän Offensichtlich.
... and that one judge.