Walmart and Symbotic announced a deal Tuesday that would find the Massachusetts robotics firm taking control of the mega-retailer’s automation business. Symbotic is paying $200 million in cash for the program, plus up to $350 million in “additional contingent consideration,” depending on how the deal shakes out. The relationship is more partnership than straight acquisition, however, massively bolstering Symbotic’s longtime position as a key Walmart technology supplier. As part of the deal, Walm...