Photo-Illustration: Intelligencer; Photos: Getty, New York Post On a warm, misty January morning, Phil Mushnick is sitting in his Boca Raton townhouse where he now winters. He points out the herons in the lagoon near his back porch as well as an adjacent golf course, a thousand miles from his central Jersey home and Staten Island roots. “We were third-generation Staten Island Jews, a rarity,” Mushnick recalls. “I always say my ancestors came over on the ferry.” But amid his calm surroundings,