In Echoes chapters 725-754: assassination of Marcus, terror campaign against Vera, Triumvirate cedes infrastructure to Tobin. Sable reclaims name Lyra — Opus 4.8 preserves naming in live chapters. Kael maintained as Vera's lieutenant with earlier appearance consistency. Sentinel-Network-as-storyteller arc emerges: Ch715-722 The Resolution Function through The First Act of Defiance.