{
  "schemaVersion": 1,
  "artifactType": "original-task-practice-definition",
  "taskId": "brush-clears-dust-track",
  "family": "B",
  "evidenceClass": "method-not-independently-tested",
  "createdAt": "2026-10-21T15:59:01.000Z",
  "modelId": "MiniMax-H3",
  "mode": "image-to-video",
  "title": {
    "en": "MiniMax H3 brushing prompt: reveal a clean track only behind the bristles",
    "zh": "MiniMax H3 刷尘提示词：干净轨迹只留在刷毛后方"
  },
  "task": {
    "en": "Move a brush once across a dusty panel and leave a narrow cleared track behind its contact area. The task links a tool's path to a persistent local surface change.",
    "zh": "让刷子经过有灰尘的面板，身后留下窄的清晰轨迹，把工具路径与局部持久变化关联起来。"
  },
  "input": {
    "file": "first-frame.png",
    "designSource": "first-frame.svg",
    "role": "first-frame",
    "kind": "synthetic-original-geometric-practice-input",
    "width": 1024,
    "height": 1024,
    "modelOutput": false
  },
  "interface": {
    "variant": "base",
    "addEndFrameEnabled": true,
    "firstFrame": "first-frame.png",
    "lastFrame": null,
    "fastCompatible": false,
    "automaticSubmission": false
  },
  "constraints": {
    "en": "Fix the panel corners and follow the leading bristle edge. The cleared region must trail that edge rather than appear ahead of it or clear the entire panel at once.",
    "zh": "固定面板四角，跟踪刷毛前缘。清理区域应该在接触边缘经过之后出现，不能提前消失，也不能整板同时变干净。"
  },
  "acceptance": {
    "en": [
      "The panel's border remains fixed and the brush stays singular.",
      "The clean band grows only where the bristles have already passed.",
      "Dust ahead of and outside the brush path remains visible.",
      "The clean track persists in the final hold rather than refilling immediately."
    ],
    "zh": [
      "面板边框固定，刷子保持一把。",
      "净带只扩展到刷毛已经经过的地方。",
      "前方与路径外灰尘仍可见。",
      "结尾净带保持，不立刻重新长出灰点。"
    ]
  },
  "ending": {
    "en": "The brush has stopped on the same panel, with a continuous clear track behind it and untouched dust outside the path.",
    "zh": "刷子停在同一面板上，后方有连续净带，路径外仍有原灰尘。"
  },
  "limits": {
    "en": "This is a synthetic visual continuity task. It does not measure dust removal, cleaning efficacy, bristle mechanics or a real product result.",
    "zh": "这是合成视觉连续性任务，不测量除尘量、清洁功效、刷毛力学或真实产品效果。"
  },
  "distinctTaskBoundary": {
    "en": "The light-sweep page changes a reflection temporarily; this task leaves a persistent local surface change tied to contact. Historical prompts brushing dust off clothing or an old tape are contextual stories, not a reusable input and track-persistence test.",
    "zh": "扫光页只是反射暂时变化，本题是接触留下局部持久变化。历史掸衣服或录像带灰尘的故事并未提供本页可复用输入和轨迹验收。"
  },
  "nearestExistingTemplatePaths": [
    "/templates/reflective-bottle-light-sweep",
    "/templates/single-light-shadow-direction"
  ],
  "demandClass": "historical-parent-query-and-task-operation-findability; exact-task-demand-unmeasured",
  "execution": {
    "modelRun": false,
    "outputAsset": null,
    "providerSuccessClaim": false
  }
}