{
  "completed_step": "C422",
  "next_proposed_step": "C423",
  "question": "Consolidate C414–C422, run a separate root-agent arithmetic/source implementation and sealed-packet replay, then publish the C423 synthesis, final checkpoint and recovery packages. Leave C424 unexecuted.",
  "reason_selected_after_current_result": "The new profile, harmonic endpoint, source-path obstruction and component scope are now bounded. The tenth authorized step should preserve and verify the completed chain rather than open another research branch.",
  "executed": false,
  "authorization_remaining": 1,
  "fixed_scope": "Mirror/529; regular Gears Noah/Shem/Flood only; SP companion local. Fixed source inputs, no canonical/graph changes."
}