The San Antonio Philharmonic — the orchestra assembled last year from the ashes of the San Antonio Symphony — has named Roberto Treviño, a former three-term city councilman, as its first executive director. Treviño, an architect by profession, served on the Philharmonic’s board during its inaugural season. Additionally, he chaired city council’s Arts and Culture Committee and served on the city-county task force that worked to stabilize the Symphony during a 2018 financial crisis.