NEW YORK — Commuters beware, conductors be timely and rats, well, run for your lives. It’s Subway Series time again this weekend in New York City, where the No. 7 line will be clogged with pinstripes so close to the autumnal equinox for first time since 2000. The trains will be full with orange and blue too, like they typically are, those colors sparkling particularly bright at the moment. Mets fans are ravenous now, able to sense their team’s first postseason birth since 2006, thanks to a comfortable 7 1/2 lead in the National League East.