Why did Denise Chung resign from the Department of Justice and what is significant about the timing?

Denise Chung, head of the DOJ's criminal division, resigned amid a wave of high-ranking DOJ official departures. Her resignation came just one day after President Trump formally nominated Ed Martin as U.S. Attorney for Washington, D.C., the office responsible for most January 6th prosecutions. Martin is a controversial figure who has defended numerous January 6th defendants and pledged to investigate anyone interfering with Elon Musk's Department of Government Efficiency (DOGE). This timing suggests potential concerns about the changing direction of the Justice Department under Trump's administration.