{
  "completed_step": "C366",
  "next_proposed_step": "C367",
  "question": "Test the fixed existing19K translation on native cumulative Noah birth/death and the retained SP Noah death/birth endpoints. Check whether it preserves the original same-phase ancestry and whether the OFF-Noah internal point can also land on the restored-MT Noah birth.",
  "reason_selected_after_current_result": "The interval reversal has a phase and placement limitation. The retained19K cross-span supplies a fixed comparison that can be tested without fitting an axis.",
  "executed": false,
  "authorization_remaining": 7,
  "fixed_scope": "Mirror/529; regular Gears Noah/Shem/Flood only; SP companion local. Fixed source inputs, no canonical/graph changes."
}