{
  "completed_step": "C387",
  "next_proposed_step": "C388",
  "question": "Compose the admitted E/J squares across their complete two-edge regular source paths. Check whole-map equality, distinguish it from endpoint agreement of the other P/J words, and locate the actual Gear and E-iteration boundaries.",
  "reason_selected_after_current_result": "The source and mode qualification is now explicit. The next bounded question is whether the surviving squares form a finite compatible strip, rather than isolated endpoint coincidences.",
  "executed": false,
  "authorization_remaining": 6,
  "fixed_scope": "Mirror/529; regular Gears Noah/Shem/Flood only; SP companion local. Fixed source inputs, no canonical/graph changes."
}