SAN FRANCISCO — The man accused of breaking into former House Speaker Nancy Pelosi’s San Francisco home, bludgeoning her husband with a hammer and seeking to kidnap her goes on trial Thursday.Opening statements were scheduled in the federal trial of David DePape who prosecutors say assaulted then-82-year-old Paul Pelosi, sending shockwaves through the political world just days before last year’s midterm elections.The attack in the early hours of Oct. 28, 2022, also highlighted how conspiracy theories and …