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

scratch/fix_reject_sleep_zero.py

@@ -0,0 +1,18 @@
+from database import TradeDB
+
+db = TradeDB()
+try:
+    snap = db.get_merged_env_snapshot()
+    
+    # 딜레이 0으로 완전 제거 (스레드 Yield 만 발생하도록)
+    snap["SCAN_REJECT_SLEEP_MIN"] = "0.0"
+    snap["SCAN_REJECT_SLEEP_MAX"] = "0.0"
+    
+    # 루프 자체도 딜레이 0
+    snap["STRATEGY_LOOP_SLEEP_MIN"] = "0.0"
+    snap["STRATEGY_LOOP_SLEEP_MAX"] = "0.0"
+    
+    db.insert_env_snapshot(snap)
+    print("Inserted new env snapshot with ZERO sleep.")
+finally:
+    db.close()