{
  "number": 400,
  "date": "2026-09-24",
  "title": "Three-vertex E/P/J source-path normal form",
  "question": "After identifying the shared MT Noah vertex, what exact normal form classifies all admissible paths in the existing three-vertex E/P/J graph?",
  "authorization": "User authorized next10 bounded steps C394–C403; 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."
}