{
  "completed_step": "C369",
  "next_proposed_step": "C370",
  "question": "Test whether P=70/69 on138→140 has an actual source-endpoint realization at the existing cumulative and regular Flood pivots separated by460. Compare its result with the retained598→600 repair under300/299; add no fitted pivot or new source point.",
  "reason_selected_after_current_result": "The bridge matrix makes the retained P ratio visible arithmetically. An endpoint test is now needed to determine whether that relation has source support beyond the remainder decomposition.",
  "executed": false,
  "authorization_remaining": 4,
  "fixed_scope": "Mirror/529; regular Gears Noah/Shem/Flood only; SP companion local. Fixed source inputs, no canonical/graph changes."
}