Generate a scene

{
  "contractVersion": 1,
  "name": "Forest Stalk — Reveal",
  "duration": 600,
  "replays": [
    {
      "id": "player_0",
      "entity": "player",
      "keyframes": [
        { "tick": 0,   "pos": [12, 64, -34], "rot": [180, -8],  "pose": "sneaking" },
        { "tick": 80,  "pos": [10, 64, -28], "rot": [165, -5],  "pose": "sneaking" },
        { "tick": 240, "pos": [4,  64, -20], "rot": [120,  2],  "pose": "sneaking" },
        { "tick": 460, "pos": [-3, 64, -14], "rot": [90,   0],  "pose": "standing" }
      ]
    }
  ],
  "cameras": [
    {
      "id": "cam_main",
      "fixtures": [
        { "kind": "follow", "durationTicks": 240, "target": "player_0", "fov": 70 },
        { "kind": "path",   "durationTicks": 240, "path": [[8,64,-22],[2,66,-18],[-5,68,-12]], "fov": 65 },
        { "kind": "look",   "durationTicks": 120, "target": "player_0", "pos": [-12,72,-8] }
      ]
    }
  ]
}