SACRAMENTO, Calif. — California lawmakers on Thursday announced plans for legislation to tackle retail theft by creating new penalties, requiring online sellers to report the source of their products and mandating crime data collection. But the bill, co-authored by Democratic Assemblyman Rick Chavez Zbur and Assembly Speaker Robert Rivas, a Democrat — and similar to a plan pushed by Gov. Gavin Newsom last month — does not touch Proposition 47, the 2014 ballot initiative that set a $950 threshold for misdemeanor shoplifting. Rivas declined to say whether he agrees with calls from retailers, Rep…