If global warming doesn’t have you thinking about Armageddon, a new documentary by two Bolinas filmmakers will. But even as the film focuses on the various horrors of nuclear power, from Chernobyl to Fukushima, it won’t leave viewers feeling hopeless. “SOS—The San Onofre Syndrome: Nuclear Power’s Legacy” was produced by Mary Beth Brangan and James Heddle, a longtime Bolinas couple who have been making films with an activist bent for four decades. It chronicles the…