Alameda County Supervisor Nadia Lockyer, who for two months has been embroiled in a sex and addiction scandal that riveted the Bay Area, told the Bay Area News Group today she is resigning from office. Lockyer, the wife of state Treasurer Bill Lockyer, will tell her colleagues and constituents in a letter that she wanted to focus on the well-being of her 8-year-old son and recovery from chemical dependency and her alleged beating by her ex-lover. "Today is a significant day for me personally and professionally," she told a reporter in the living room of their home in the Hayward...