US planes were in the air and armed boarding teams were ready to seize a Chinese ship over nuclear weapons material. Then officials checked the intel. A chatbot had misidentified the cargo. Four sources told CNN the report was entirely false and almost started a war. Chatbots misidentify things constantly. What let this one reach airborne aircraft is the mechanism worth understanding. The report carried a special operations analyst's name, so it moved through the chain of command with the…