Home Depot is holding firm on its promise to keep prices steady despite mounting pressure from tariffs, even as President Trump escalates his public feud with major retailers like Walmart and Mattel by warning consumers of potential price hikes.The home improvement giant has been quietly working with suppliers to shift production away from China and has pressed vendors to offer price concessions as a way to shield consumers from the financial fallout of the trade war.“We anticipate that 12 months from now, ...