A man who fired thousands of federal workers with zero concern for timing or process just lost his biggest lawsuit because he didn't file on time. The jury deliberated less than two hours. Due diligence and deadlines turn out to matter—whether you're cleaning out someone else's desk or trying to protect what was on yours. (Musk can endure the L. The scores he put through his chainsaw can’t.) giftarticle.ft.com/gift…