{
  "completed_step": "C404",
  "next_proposed_step": "C405",
  "question": "Test whether the existing same-Gear500-year Noah-to-Shem relation carries all six C396 E/J coordinate loops and the two complete E/P/J graphs to sourced Shem birth/death records. Check every endpoint and pivot, preserve source labels, and use the fixed source500 rather than a fitted translation.",
  "reason_selected_after_current_result": "C404 distinguishes the prior expansion comparison from a complete source transport. The already sourced500/600 biographies supply a different, fixed candidate that can be checked finitely before any wider search.",
  "executed": false,
  "authorization_remaining": 9,
  "fixed_scope": "Mirror/529; regular Gears Noah/Shem/Flood only; SP companion local. Fixed source inputs, no canonical/graph changes."
}