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

scratch/check_ob_tables.py

@@ -0,0 +1,12 @@
+from database import TradeDB
+db = TradeDB()
+try:
+    for t in ['kis_ws_orderbook', 'ls_ws_orderbook']:
+        try:
+            sql = f"SELECT COUNT(*) as cnt FROM {t} WHERE DATE(recv_ts) = '2026-08-10'"
+            cnt = db.conn.execute(sql).fetchone()['cnt']
+            print(f"Table {t}: {cnt} rows today")
+        except Exception as e:
+            print(f"Could not count {t}: {e}")
+finally:
+    db.close()