Gloria Nagy and RIchard Saul Wurman work and live in a 19th-century copy of a French country house.Credit...Trent Bell for The New York Times NEWPORT, R.I. “ISN’T it pretentious?” That was Richard Saul Wurman, a slight figure in cargo shorts, T-shirt and sandals, at the door of his “super mansion” — to use the words of his friend the designer Massimo Vignelli — otherwise known as the Orchard. Its