DENVER — Catcher Jacob Stallings and the Colorado Rockies agreed to a $2.5 million, one-year contract on Wednesday. The deal carries a $2 million salary for next season, along with a $2 million mutual option for 2026 that includes a $500,000 base buyout. The 34-year-old Stallings set full-season career highs with Colorado last season when he hit.263 with nine homers …