Enter Sean Manaea: once a starter with a paycheck and a plan, now more like a guest at the bullpen party he wasn’t invited to. With six games left before the postseason curtain rises, the Mets can’t afford a man who treats high-leverage innings like a casual stroll. The Mets can’t trust Sean Manaea as the playoffs hang in the balanceWhen Manaea first returned from the injured list in mid-July, he looked like the kind of midseason addition that could steady the Mets’ rotation. Sean Manaea has pitched his way out of trust, and the only role left for him is in the shadows of low-leverage bullpen duty. With the season hanging in the balance, every inning is precious, and the Mets can’t afford to let Manaea turn October dreams into September regrets.