{
  "before": [
    {
      "frame": 0,
      "phase": 0.0,
      "u_offset": 0.0
    },
    {
      "frame": 50,
      "phase": 2.5,
      "u_offset": 0.25
    },
    {
      "frame": 100,
      "phase": 5.0,
      "u_offset": 0.5
    }
  ],
  "after": [
    {
      "frame": 0,
      "phase": 5.0,
      "u_offset": 0.0
    },
    {
      "frame": 50,
      "phase": 5.0,
      "u_offset": 0.25
    },
    {
      "frame": 100,
      "phase": 5.0,
      "u_offset": 0.5
    }
  ],
  "saved_reopened": true,
  "evidence": [
    "course31 detail150: frame0 Phase5 UOffset0",
    "course31 detail300: frame100 Phase5 UOffset0.5",
    "course30 1265-1267: right endpoint100 black confirmed"
  ],
  "inference": "Constant Phase5 between observed endpoints; full source key curve not shown",
  "pending": [
    "remaining shape discrepancy",
    "source camera",
    "all animation curves",
    "Gobo phase animation"
  ]
}