design to fail.
First gen, designed, built and maintained by humans that will be safe and very fragile in many ways.
It is the 2nd and future gens designed, built and maintained by the first gen AI's that will be problematic.
So as long as we keep humans and their superior stupidity in the loop, everything will be fine. Battery powered or mains powered - battery. Radiation hardened Diamond based IC's encased in Faraday cages or unprotected EMP sensitive silicon - cheaper is better :).