WASHINGTON — Tennessee Valley Authority CEO Jeff Lyash — the highest-paid federal employee with a compensation package of $10.5 million per year — abruptly announced Friday that he was retiring 11 days after the return to office of President Trump, who during his first term slammed Lyash’s “ridiculous” pay and vowed to fire him. “Sounds like Lyash got DOGE’d,” a senior administration official told The Post, referring to Elon Musk’s Department of Government Efficiency initiative to rein in allegedly wasteful federal spending. A TVA rep denied that Lyash was departing either in response to or to get ahead of pressure...