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  "schema_version": 1,
  "evidence_class": "functional-demo-recording",
  "scenario": "fact updates / 事实变化",
  "language": "zh-CN",
  "recorded_at_utc": "2026-10-21T11:15:38.683223+00:00",
  "environment": "Local real demo backend, ONNX encoder, dedicated scratch namespace, local .env key; no production model quota. Dialogue is fictional sample data.",
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  "dirty_frontend": true,
  "source_hashes": {
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  "config": "configs/fallback.yaml",
  "models": {
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    "answerer": "gemini-3.5-flash-lite"
  },
  "sample_count": 1,
  "selection": "One prespecified fact-update preset run, no alternate successful run selected. The run completed without page-level errors.",
  "seed": null,
  "prompt_or_extractor_changes": false,
  "transcript": [
    {
      "role": "user",
      "text": "[2024-03-10] 我的个人项目用的是 TensorFlow。"
    },
    {
      "role": "status",
      "text": "抽取完成：1 条事实。"
    },
    {
      "role": "user",
      "text": "[2026-09-01] 我的个人项目已经从 TensorFlow 换成了 PyTorch。"
    },
    {
      "role": "status",
      "text": "抽取完成：1 条事实。"
    },
    {
      "role": "user",
      "text": "我现在用什么框架？之前用的是什么？"
    },
    {
      "role": "answer",
      "text": "LLM 回答: 你现在使用的是 PyTorch，之前使用的是 TensorFlow。"
    }
  ],
  "observed_results": {
    "memories": "ml_framework = TensorFlow\nSUPERSEDED · PREFERENCE\nThe user uses TensorFlow for their personal project.\nconversation-1 · 2024-03-10 22:15:38 → 2026-09-01 22:15:58\nml_framework = PyTorch\nACTIVE · PREFERENCE\nThe user switched their personal project from TensorFlow to PyTorch.\nconversation-2 · 2026-09-01 22:15:58 → 至今",
    "as_of": "2025-01-01\nml_framework = TensorFlow\n自 2024-03-10\n2026-09-30\nml_framework = PyTorch\n自 2026-09-01",
    "progress": "完成 · 共 52s",
    "source": "conversation-2 · turn 0: 我的个人项目已经从 TensorFlow 换成了 PyTorch。"
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    "scope": "Recorded usage includes failed attempts where reported; unreported provider usage and monetary billing are unavailable."
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  "source_archive": {
    "path": "public-demo/recordings/20261021-fact-updates-zh-source.zip",
    "sha256": "cf2a2a66b7a6a8f96fbfabf13d76c9f700c4bec6a6dd80cc5611ccf5a937a377",
    "note": "Capture-time source snapshot; presentation-only refinements after recording may differ from the deployed page."
  }
}