{
  "after": "C283",
  "chosen_next_step": "C284: release the shared-index pairing and classify all independent cumulative annual indices against the same six Flood endpoints and two profiles.",
  "reason": "The current uniqueness is conditional on j−2; the next finite test asks whether K divisibility itself recovers that selector relation within the held fields.",
  "next_step_executed_within_this_step": false,
  "effort": "High sufficient",
  "limits": [
    "Uniqueness is confined to the eight admitted state choices and six positions.",
    "No probability or independent-necessity claim follows.",
    "Regular profile change is a composite operation, not regular Cainan460."
  ]
}