PHILADELPHIA — The Eagles went back to the future this week, announcing the promotion of veteran executive Joe Douglas to senior vice president of player personnel. The move was part of a broader reshuffling across the team’s football operations, scouting, and sports medicine departments. Aside from Adam Berry’s rapid rise to assistant general manager under Howie Roseman, Douglas’s promotion stands as arguably the most significant decision on the football side among the changes. A respected scouting veteran with a proven eye for talent, Douglas previously served as the Eagles’ vice president of player personnel from 2016 to 2019. In that role, he played a key part in assembling the roster that delivered the franchise’s first Super Bowl victory after the 2017 season. That success also led to Douglas landing the general manager position with the New York Jets.…