{
  "completed_step": "C400",
  "next_proposed_step": "C401",
  "question": "Test the closed-circuit generators against every frozen regular coordinate and against529-spaced displacements. Determine the exact source-preserving domain and whether the original2K/17K spans or a529 lattice are preserved.",
  "reason_selected_after_current_result": "The reduced grammar is now exact on admitted paths. Its interpretation depends on separating that local source-path structure from a single affine action on the whole chronology or529 lattice.",
  "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."
}