What a delight to see Kehlani smile again. She has a reason to. “Folded” remains ensconced in the Billboard Hot 100 Top 10, her biggest hit under her own name, a triumph on the chart alongside Olivia Dean and PinkPantheress . The conceit—the lover’s folded clothes represent Kehlani’s acceptance of her need for distance—is simplicity itself, hence why no one has hatched a song out of it ( Jazmine Sullivan is a runner-up). But only Kehlani with her un-maudlin yearning could’ve fleshed it out. Months later “Folded” still has the freshness of newly pressed pants. The good mood is general.…