Last January, Mayor Brandon Johnson said he was already preparing City Hall for a potentially painful round of midyear layoffs if revenue fell short, infuriating the rebel bloc that muscled an alternative budget through the City Council after rejecting Johnson’s corporate head tax. Now, the mayor has what he views as black-and-white proof that his dire prediction has come true—without saying what he intends to do about it. The midyear budget report shows that the alternative revenues approved by