{
  "number": 337,
  "date": "2026-09-24",
  "title": "Source factorization of the two 2K sides",
  "question": "Which source selectors are necessary and sufficient for each1058 side, and what additionally synchronizes their17K transports?",
  "authorization": "User authorized next10 bounded steps C334–C343; 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."
}