With only 1 tile of runway, this requires a single-frame stutter (release forward then repress on the next frame), on the last possible frame.

Entrance condition:

{
  "comeInStutterShinecharging": {
    "minTiles": 1
  }
}

Requires:

"canPreciseStutterWaterShineCharge"
"canInsaneJump"
"canShinechargeMovement"
{
  "or": [
    {
      "shinespark": {
        "frames": 47,
        "excessFrames": 5
      }
    },
    {
      "and": [
        "canMidairShinespark",
        {
          "shinespark": {
            "frames": 44,
            "excessFrames": 5
          }
        }
      ]
    },
    {
      "and": [
        "canMidairShinespark",
        "HiJump",
        {
          "shinespark": {
            "frames": 41,
            "excessFrames": 5
          }
        }
      ]
    }
  ]
}