{
  "completed_step": "C338",
  "next_proposed_step": "C339",
  "question": "Test the Noah-held ladder against the previously admitted500/100 and502/98 Shem bindings, using the named G2 Noah/Flood with G2 versusG1 Shem control. Determine which equalities survive without creating a missing lower Gear or MT companion.",
  "reason_selected_after_current_result": "C338 succeeds at the primary intermediate but uses a particular Shem binding. The standing modal distinction is the strongest immediate control on that new source realization.",
  "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."
}