{
  "after": "C304",
  "chosen_next_step": "C305: Test exact600 compatibility between the17K-selected SP Noah and the same-Gear SP Flood counterpart of the fixed2832 MT Flood selection.",
  "reason": "The two comparisons now have verified source provenance, but their different MT interior endpoints leave the biography compatibility unresolved.",
  "next_step_executed_within_this_step": false,
  "effort": "High sufficient",
  "limits": [
    "Stored and derived comparisons remain separately typed.",
    "The C01 interface list is not an exhaustive graph index.",
    "No missing MT companion or graph edge is introduced."
  ]
}