{
  "completed_step": "C368",
  "next_proposed_step": "C369",
  "question": "Construct the complete2×2 matrix of lifespan-preserving translations between the two cumulative Noah states and the SP/restored-MT Noah biographies at each complete C287 row. Keep the companion annual-index adjustment explicit, and reduce the bridge lengths modulo529.",
  "reason_selected_after_current_result": "A single native lifespan transports successfully, but carrying both source states may require different bridge constants. The finite matrix can expose that dependence and its529 arithmetic without introducing new endpoints.",
  "executed": false,
  "authorization_remaining": 5,
  "fixed_scope": "Mirror/529; regular Gears Noah/Shem/Flood only; SP companion local. Fixed source inputs, no canonical/graph changes."
}