A rogue’s folly it is in the kingdom of the Ozark Mountains. Lord Smith Treuer builds for himself and his fair lady a grand castle looking out over the bluff. But the folly be not of sand, rather of stone and stick taken from the land."It’s been called a castle or a folly in terms of architecture," Treuer says of his project on the bluff above Table Rock Lake and the town of Beaver. The golden …