PHILADELPHIA — The Eagles have promoted Adam Berry to Assistant General Manager, according to a league source, completing a remarkably swift ascent from Wall Street executive to one of the most influential voices in the organization’s front office. Berry, the twin brother of Cleveland Browns GM Andrew Berry (a former Eagles vice president of football operations), joined Philadelphia in 2023 as Director of Football Operations and Strategy after a 14-year career at Goldman Sachs.  He most recently served as head of U.S. loan trading and managing director at the investment bank.  Top Aide Eagles GM Howie Roseman speaks to reporters after the 2026 NFL Draft. | John McMullen/Eagles On SI Just four years after leaving finance, he now stands as, arguably the key lieutenant to one of the game's top GMs in Howie Roseman.…