In the typical life cycle of a rock band, the early years tend to carry the greatest urgency. Then time smooths the edges, and reunions are fueled more by nostalgia than inspiration. Dogstar has somehow landed on an opposite path. On their new album All In Now , the Los Angeles trio of singer-guitarist Bret Domrose, drummer Robert Mailhouse, and bassist Keanu Reeves has reinvented itself with a taut, post-punk-informed sound built on texture and anxious melody. It’s their second album since reuniting onstage in 2023, and this time the growth feels like a genuine leap. “I think we’re still Dogstar,” Reeves says, “but Dogstar may be a different band.” The songs are sharper and more confident, shaped by a successful return to touring and the guidance of producer Nick Launay, whose own history stretches back to the original post-punk era.  It’s mid-afternoon at Sid the Cat Auditorium, a new music venue in South Pasadena and a convenient meeting place for the trio to talk about the album.…