PHILADELPHIA - Howie Roseman has built one of the most consistently successful front offices in modern NFL history. Three Super Bowl appearances since 2017. Consistent contention. Draft hits that keep the roster young and cost-effective and cap gymnastics that could make Simone Biles blush. Under Roseman , the Eagles have quietly become the gold standard Jeffrey Lurie once prematurely branded his organization to be. And right now, the unintended consequence of Roseman's success is an increasingly familiar sight: talented executives exiting the Jefferson Health Training Complex. Over the last month the Eagles lost three more key pieces from Roseman's inner circle, most notably assistant general manager Alec Halaby, who had been with the organization for 17 years and served as Roseman's right-hand man since his promotion to that position in 2022.…