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

scratch/check_user_req.py

@@ -0,0 +1,14 @@
+import json
+
+with open('/home/hoon/.gemini/antigravity-ide/brain/e07d5342-58aa-4443-a5b3-73bde0f593dd/.system_generated/logs/transcript.jsonl', 'r') as f:
+    messages = []
+    for line in f:
+        try:
+            data = json.loads(line)
+        except:
+            continue
+        if data.get('type') == 'USER_INPUT' and data.get('step_index') < 5795:
+            messages.append((data.get('step_index'), data.get('content')))
+    
+    if messages:
+        print(messages[-1])