As Prudy Foxx walked through rows of ripening fruit at several vineyards nestled among the Santa Cruz Mountains last September, she cringed at the spindly shoots rising from the stocky grapevine trunks. … A similar scene played out last fall at many vineyards around the Bay Area: years of drought taking a destructive toll on the vines, threatening a billion-dollar industry and putting more stress on California’s scant stored water resources. Then, like a “godsend,” the rains came. Over several weeks in December and January, storms dropped more than a foot of rain on Northern California, smashing historic records and leaving a wide swath of devastation in their wake.