{
  "number": 354,
  "date": "2026-09-24",
  "title": "Shem adjacent-Gear 598 to 600 source census",
  "question": "Which same-context and matched-rail Shem birth/death comparisons realize598, and do their held-endpoint repairs land on existing600 biographies?",
  "authorization": "User authorized next10 bounded steps C354–C363; next question reassessed after each completed result.",
  "scope": "Mirror/529; regular Gears Noah/Shem/Flood only; SP companion local. Fixed source inputs, no canonical/graph changes."
}