https://github.com/phillipberndt/autorandr

What is your sleep setting in BIOS? I had some problems with Linux sleep that got fixed by switching to Windows sleep. Maybe try that?

Tailscale?

Onyx Boox eink tablet that runs android does all those things. I use Moon Reader on mine.

https://shop.boox.com/products/noteair3

I did this before. The airport is a short ride from the center on the subway, so it’s entirely possible to go to the center, wander around, and get back in time for your flight. It might be tough to find anything at 7am, though.

https://archive.ph/OLTJq

And use Vorta if you want a gui for Borg backup.