CREATE TABLE strategy_logs  (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  time DATETIME,
  symbol TEXT,
  price REAL,
  rsi REAL,
  macd REAL,
  bias REAL,
  pred_10m TEXT,
  conf_10m INTEGER,
  pred_30m TEXT,
  conf_30m INTEGER,
  strategy TEXT,
  backtest_10m TEXT DEFAULT '⏳ 待回测',
  backtest_30m TEXT DEFAULT '⏳ 待回测'
)