fix: implement api resilience to handle data delays at open

main.py

@@ -74,7 +74,19 @@ def run_ticker_lifecycle(client, yf_ticker, t212_ticker, tz):
     
     if now.hour == 9 and now.minute >= 45:
         logger.info(f"Evaluating opening candle for {yf_ticker}...")
-        if strategy.check_setup():
+        
+        # Retry loop: wait for yfinance to publish the 09:30-09:45 candle (up to 3 minutes)
+        setup_found = False
+        max_retries = 12
+        for attempt in range(max_retries):
+            if strategy.check_setup():
+                setup_found = True
+                break
+            elif attempt < max_retries - 1:
+                logger.debug(f"Data not ready for {yf_ticker} yet, waiting 15s...")
+                time.sleep(15)
+                
+        if setup_found:
             params = strategy.get_trade_params()
             params['ticker'] = t212_ticker