{
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    {
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      "target_key": "2027-03-30",
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    {
      "code": "low_tier",
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      "interval_to": "2026-10-27",
      "strike": null,
      "target_key": "10-19\u219210-27",
      "message_short": "LOW confidence",
      "message_long": "Event confidence: LOW (baseline not robust)",
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    },
    {
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      "interval_to": "2026-11-03",
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      "target_key": "10-27\u219211-03",
      "message_short": "LOW confidence",
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    },
    {
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    "build_metadata": {
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      "id_namespace": "market_calendar",
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}