NEW YORK — Jeffrey Epstein signed a will just two days before he killed himself in the Manhattan federal jail, new court records show, opening a new legal front in what could be a yearslong battle over the financier’s fortune. Court papers filed last week in the U.S. Virgin Islands list no details of beneficiaries but put the estate at more than $577 million, including more than $56 million in cash. The existence of the will, first reported by the New York Post, raised new questions about Epstein’s final days inside the Metropolitan Correctional Center, where he was awaiting trial on federal sex trafficking and conspiracy charges. His signing of the document foreshadowed his Aug.