{
  "number": 320,
  "date": "2026-09-24",
  "title": "Complete fixed17K Noah Flood rectangle census",
  "question": "Which of the eight held annual pairs admit same-context regularNoah/Flood rectangles and why wasG1companion omitted?",
  "authorization": "User authorized next10 bounded steps C314–C323; 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."
}