As the threat posed by COVID-19 continues to recede, several arts organizations are putting toes in the water to explore options for safely returning to live, in-person presentations. San Francisco Performances, it appears, is ready to dive right in. On Wednesday, SFP president Melanie Smith announced that her organization, for the first time in its 41-year history, will launch a summer season of music concerts, to be held live in its longtime venue at the Herbst Theatre, with no digital components whatsoever. Called the “Summer Music Sessions,” the series of guitar, piano and chamber performances will kick off on July 14 and run through July 24, bringing artists to the stage, whose previously scheduled appearances in the fall-to-spring seasons of 2019-’20 and 2020-’21 were postponed due to the pandemic.