{
  "completed_step": "C351",
  "next_proposed_step": "C352",
  "question": "Test the paired598-input requirement in C319’s fixed a,b menu and identify its exact dependency on the existing2K conditions. Recheck File02’s regular-gap and cumulative-propagation permissions before assigning any coupled source-rule status.",
  "reason_selected_after_current_result": "The paired600 partitions are now source-qualified numerically. The last unresolved research issue is whether this pairing establishes more than conditional selection from the already chosen input gaps.",
  "executed": false,
  "authorization_remaining": 2,
  "fixed_scope": "Mirror/529; regular Gears Noah/Shem/Flood only; SP companion local. Fixed source inputs, no canonical/graph changes."
}