{
  "_说明": "牛熊时间分界配置 —— 由用户辅助标定。改完保存即可，每日自动更新会立即生效，无需改 Python 代码。",
  "_格式": "boundaries 按日期升序；date=生效日(YYYY-MM-DD)，regime=牛/熊，note=分界理由（会显示在云端页面）。",
  "_编辑方式": "① 直接改本文件；或 ② 命令行 python etf24_daily.py --set-regime 2026-12-01 牛 理由；或 ③ 在对话里告诉我日期与牛/熊，我来改。",
  "updated_at": "2026-11-09",
  "updated_by": "用户辅助标定 · 初值沿用项目既有 regime_monthly.py（美联储决议次日口径）",
  "default_regime": "熊",
  "r2_ma_days": 120,
  "boundaries": [
    {"date": "2016-12-15", "regime": "熊", "note": "2016-12-14 加息，次日起转熊"},
    {"date": "2019-08-01", "regime": "牛", "note": "2019-07-31 降息，次日起转牛"},
    {"date": "2022-03-18", "regime": "熊", "note": "2022-03-17 加息，次日起转熊"},
    {"date": "2024-09-19", "regime": "牛", "note": "2024-09-18 降息，次日起转牛"},
    {"date": "2026-09-18", "regime": "熊", "note": "2026-09-17 加息，次日起转熊"}
  ]
}