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

scratch_db_query.py

@@ -0,0 +1,19 @@
+import sys
+import os
+
+sys.path.insert(0, os.path.abspath("."))
+from kis_trader.database import TradeDBExt
+
+db = TradeDBExt()
+try:
+    print("--- 키움 WS 실시간 수신 상태 확인 (가장 최근 틱 조회) ---")
+    rows = db.conn.execute("SELECT code, price, volume, tick_time, source, recv_ts FROM ws_ticks ORDER BY recv_ts DESC LIMIT 5").fetchall()
+    for row in rows:
+        print(dict(row))
+        
+    print("--- 캔들 최근 데이터 ---")
+    rows2 = db.conn.execute("SELECT code, close, candle_time, source, is_confirmed FROM ws_candles ORDER BY id DESC LIMIT 5").fetchall()
+    for row in rows2:
+        print(dict(row))
+finally:
+    db.close()