By Scott Roxborough Europe Bureau Chief For an industry still recalibrating after the boom and bust of Peak TV, this year’s Series Mania offered that rarest of commodities: Hope. The executive side may have lacked some of its usual star power — there were no U.S. network chiefs or global streaming bosses among this year’s keynote speakers — but the festival’s official lineup ranked among its strongest in years. Series Mania got off to stellar start with The Testaments — Hulu‘s The Handmaiden’s Tale sequel starring One Battle After Another breakout Chase Infiniti — and never looked back, with edgy, boundary-pushing shows from around the world and across all genres. Highlights included The Audacity, AMC‘s Silicon Valley satire from Succession producer Jonathan Glatzer; The Flaws, a German office sitcom that takes its inspiration from Buster Keaton-style silent film comedy; and My Brother, a Swedish family drama that’s as dark and bleak as a Nordic winter.…