Those doughy, thickly swirled homemade cinnamon rolls that have become small-town famous in recent years represent one family's hard work: hours and hours of painstaking labor; thousands and thousands of dollars.Doug Russell, his wife Kim, and their many children, along with other employees, have made Russell's Mercantile a household name in Carson Valley ever since opening their bakery and restaurant in Minden eight years ago.But now, with children grown and following their own dreams, the Russells have decided to do something different. After filling Thanksgiving orders last month, they closed their storefront.In a phone interview last week, Doug Russell, 54, …