{
  "after": "C298",
  "chosen_next_step": "C299: lift Flood-start matches through the source600 relations to regular Noah birth and cumulative Shem, preserving role and companion restrictions.",
  "reason": "The matched Flood starts supply an existing600-year extension on both sides; testing it determines whether the comparison preserves a complete segment, not just endpoints.",
  "next_step_executed_within_this_step": false,
  "effort": "High sufficient",
  "limits": [
    "The weave does not create extra MT field members.",
    "Eight labels represent six coordinate comparisons.",
    "No conclusion about other SP bridge/anchor contexts follows from this fixed comparison."
  ]
}