{
  "completed_step": "C383",
  "next_proposed_step": "C384",
  "question": "Compare the moving-frame P/J composition structure with the existing Noah-held E=25/23 source ladder. Test a finite mixed diagram using only its already recorded pivots, endpoints, contexts and phases; determine whether a source-qualified commuting square exists and record any obstruction without changing anchors or Gear scope.",
  "reason_selected_after_current_result": "The paired P/J comparisons now have an exact source-supported composition law and a known17K closure limit. Connecting that reduced structure to the retained E ladder is the next direct unification question. C384 is proposed only and requires a new instruction.",
  "executed": false,
  "authorization_remaining": 0,
  "fixed_scope": "Mirror/529; regular Gears Noah/Shem/Flood only; SP companion local. Fixed source inputs, no canonical/graph changes."
}