fix: resolve 429 rate limit errors with API backoff and correct timezone handling for 09:30 candle

scripts/verify_last_week.py

@@ -0,0 +1,8 @@
+import pandas as pd
+import yfinance as yf
+from scripts.backtest import backtest_ticker
+
+print("Running historical check for the last 5 trading days...")
+for ticker in ["NFLX", "AMZN", "AAPL"]:
+    res = backtest_ticker(ticker, days=5, quiet=False)
+    print("="*60)