Kamala Harris has emerged from her den, apparently refreshed. Last week, she delivered a winsome keynote at a benefit gala in San Francisco, then made a surprise appearance at the Met Gala, the party of the year for New York City high society, and this week headlined a closed-door benefit for the Democratic National Committee. She reportedly will decide by the end of the summer whether to run for California governor. Democrats are “divided” about it. There are many skeptics, but others are