When Halloween spirits frolic in the shadows, children costumed as ghouls, goblins, cats, frogs and princesses will be trick-or-treating at one of Carson City's finest homes.Gov. Brian Sandoval and first lady Kathleen Sandoval will hand out candy at the Governor's Mansion 5-8 p.m. Wednesday. They'll be accompanied by Irish dancers, clowns cycling through the crowd, a magician, juggler, a musician and even crash-test dummies to engage and entertain the Halloween crowd.Zombo, of late-night local television fame, along with Miss Transylvania, will be among the entertainment. The entire front grounds of the mansion will be open.The candy was donated by Carson …