Whether post-dismissal proceedings are void when no lawful conviction was entered and whether concealment of dismissal and suppression of exculpatory evidence constitute fraud on the court

1. Whether a court may impose sentencing or supervised release after dismissing a criminal case under Federal Rule of Criminal Procedure 48(a) , where no valid indictment or conviction remained. 2. Whether post-dismissal proceedings are void ab initio when no lawful judgment of conviction was ever entered following a case-ending dismissal. 3. Whether concealment of a dismissal order, misidentification using an incorrect Social Security Number, and suppression of exculpatory evidence constitute fraud on the court warranting relief under Rule 60 (b) (4) . 4. Whether appellate courts must provide reasoning.when denying review of structural jurisdictional and constitutional claims involving dismissal and fraud. 5. Whether a district court's denial of a stayed and never-reopened § 2255 petition violates jurisdictional limits and due process protections under 28 U.S.C. § 2255 and Article III. 1