Gina Marinelli’s résumé boasts impressive bullet points: Nobhill Tavern at the MGM Grand, American Fish and Sage at Aria, D.O.C.G. Enoteca at Cosmo. But the chef was meant to chart her own course, and her Summerlin debut is off to a rousing start. 3555 S. Town Center Drive #105, 702-722-2099.