{
  "completed_step": "C384",
  "next_proposed_step": "C385",
  "question": "Solve the unique pivots required to transport the existing P/J repair through the moving E ladder, then test their membership in the full frozen Noah/Shem/Flood register. Include all four previously admitted regular common P/J repairs and their SP/LXX context aliases without creating pivots.",
  "reason_selected_after_current_result": "The initial defect may reflect unavailable source pivots rather than an algebraic impossibility. Computing the required pivots once and checking the finite existing menu is the narrowest way to decide.",
  "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."
}