Writer-director Jordan Peele’s chilling “Us” continues to haunt long after the theater lights go up.Peele (“Get Out”) seeds the brain-teasing film with clues until the very end, when viewers must mentally reconstruct the story fragments rattling around their shaken brains.After an opening night screening of “Us,” the audience did not buzz with appreciation or rumble with applause. It sat dazed in stunned silence wondering what had just happened.So many portends, parental fears and …