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

scratch/remove_cand_limits.py

@@ -0,0 +1,22 @@
+from database import TradeDB
+
+db = TradeDB()
+try:
+    snap = db.get_merged_env_snapshot()
+    updated = False
+    
+    # 전략별 후보 상한(CAND_LIMIT)을 0(무제한)으로 설정
+    for prefix in ["SCALP", "SHORT", "MOMENTUM", "BREAKOUT", "RANGE_BREAK", "UPDOW", "DART", "US_MOMENTUM"]:
+        key = f"{prefix}_CAND_LIMIT"
+        if snap.get(key) != "0":
+            snap[key] = "0"
+            updated = True
+            print(f"Set {key} to 0 (Unlimited)")
+            
+    if updated:
+        db.insert_env_snapshot(snap)
+        print("Inserted new env snapshot with CAND_LIMIT removed.")
+    else:
+        print("All CAND_LIMITs are already 0.")
+finally:
+    db.close()