{
  "completed_step": "C360",
  "next_proposed_step": "C361",
  "question": "Place the600 and650 output branches in the matched SP/MT Shem birth/death rectangle. Check the resulting1250 source span and whether the existing Noah-held double-E comparison translates to a fully sourced Shem-held endpoint comparison.",
  "reason_selected_after_current_result": "The joined map now has clear control limits. Its600 lifespan output and the earlier650 cross-tradition output share a starting Shem node; their relation may expose a source-backed connection to the retained1250 double expansion.",
  "executed": false,
  "authorization_remaining": 3,
  "fixed_scope": "Mirror/529; regular Gears Noah/Shem/Flood only; SP companion local. Fixed source inputs, no canonical/graph changes."
}