I have an Slimbook Zero, and I am quite happy with it (not a laptop). I have had an Schenker Via Pro for more than 5 years now, and it is still going strong. The support has been awesome, a couple years ago I asked about where to get a battery replacement, as mine had bulged. They sent me a new one (I was already out of standard warranty period), at no cost!
Edit: little to none support if you use linux, but still recommending them.
What are the specs, hardware wise, of both your laptop and your nas?
I wanted to get rid of my chromecast, so I initially planned on reusing an old minipc I had, tried installing SteamOS on it but failed miserably.
Then I went with Opensuse Aeon, instaled Kodi but I really don’t like the interface, so I am using the Jellyfin client, the SteamApp, and Firefox with my usual adblock setup. All via flatpaks.
This setup autoupdates, so it is cool to have it up 24/7 and just turn on the tv. I can control it via my dualshock, but it is more usable with a 2.4Ghz remote control w/keyboard I got for less than 20€
Sound goes via hdmi to the tv, and from there to my soundbar via ARC, so no sound directly to the pc.
Next, I may setup the Jellyfin server on this machine, so I can leverage its hardware for transcoding (better specs that the nat)
Iirc, you are entitled to have/create a backup of your physical media, as long as it is for your personal use.
Nice homework you got there. Imo you need to read the manpages for cron or systemd timers, to schedule your tasks. Any cloud based calendar app can help you for the notification. And I think any genai tool can get you a suitable chunk of code depending on your specifics about the scripting.
TPM storage, perhaps?
I do tech support on a global company, and some customers have started to demand their cases not to be readable for our usa based colleagues, nor the shared info hosted on usa clouds. So that wall is somewhat already there.