{
  "number": 387,
  "date": "2026-09-24",
  "title": "Companion and502/98 controls for the E/J square",
  "question": "Which existing companion and Shem-mode alternatives preserve the E/J source square, without inventing MT companions or Gear0?",
  "authorization": "User authorized next10 bounded steps C384–C393; 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."
}