Check out evil to use vim keybindings within emacs. If you want a battery-included experience, try Doom Emacs where enabling evil is a breeze.

If that’s something that matters to you, do know that Boox does not comply with the GPL licence.

Agreed! It’s so frustrating when I screw up a build, or realize I don’t enjoy the build I made after investing too many hours.

I use Super Productivity for this. Not perfect, but good enough