{
  "completed_step": "C386",
  "next_proposed_step": "C387",
  "question": "Test the E/J square against the existing SP companion and valid502/98 Shem bindings, preserving actual Gear membership and recording the exact failures rather than treating the500/100 realization as a source selector.",
  "reason_selected_after_current_result": "The positive square uses the500-year Noah–Shem binding. Its interpretation depends on explicitly checking the alternative bindings already retained by the project.",
  "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."
}