AI bots have now spun up almost 3 billion throwaway computers through one company most people have never heard of, and that company just got valued at $15.75 billion. A year ago it was worth $1.1 billion. It's called Modal, and the reason bots need all those computers is kind of funny once you see it. When an AI coding tool writes code, it has no idea whether the code actually works until it runs it. And you really don't want a bot running untested code on your laptop or on the servers your…