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

scratch/check_ws_ticks_schema.py

@@ -0,0 +1,7 @@
+from database import TradeDB
+db = TradeDB()
+try:
+    cols = [dict(r)["Field"] for r in db.conn.execute("SHOW COLUMNS FROM ws_ticks").fetchall()]
+    print(f"ws_ticks cols: {cols}")
+finally:
+    db.close()