refactor: enhance Optuna backtesting framework, optimize orderbook filtering, and update database management utilities.

scratch/check_db_schema2.py

@@ -0,0 +1,12 @@
+import sys
+import os
+sys.path.insert(0, '/home/hoon/kis_bot')
+from database import TradeDB
+
+db = TradeDB()
+try:
+    cols = [dict(r)["Field"] for r in db.conn.execute(f"SHOW COLUMNS FROM active_trades").fetchall()]
+    print(f"active_trades cols: {cols}")
+except Exception as e:
+    print(f"Error: {e}")
+db.close()