One week after Kentucky captured its eighth NCAA title, the focus in Lexington, Ky., shifted back to renovating Rupp Arena, the Wildcats’ home court. Local officials expect to issue a proposal to hire a sports architect for the project by the end of the year, said Brent Rice, chairman of the Rupp Arena Arts and Entertainment District Task Force. The task force made its recommendation in January to upgrade the downtown arena and Lexington Center…