This was just a quick physical swap of the seats. I still need to work on the wire harness. That will take care of the airbag issue and restore the seat heating.
Adding padding to the seat isn't the answer for me. The Bolt seat is simply too narrow in the seat bottom. The part of the seat bottom that curves up to hug the outside of the thighs are too close together, too tall, and too steep.
The plastic airbag cover digs into my leg getting into and out of the car.
It's like the entire Bolt seat bottom is just wrong.