Roger Craig sees a Harbaugh-led 49ers dynasty

Exactly 30 years ago, coach Bill Walsh transformed a perennially mediocre-at-best 49ers franchise into a juggernaut that would capture five Super Bowl titles in 14 seasons. After 17 years without a return to the NFL title game, one of the key members of Walsh’s 49ers predicts a return to glory under coach Jim Harbaugh. “I…