fix: simplify market status calculation

Author: ComputerOracle

frontend/src/components/place-bet-form.tsx

@@ -33,11 +33,13 @@ export function PlaceBetForm({ market, onBetSuccess }: PlaceBetFormProps) {
   const [isSubmitting, setIsSubmitting] = useState(false);
   const [submitError, setSubmitError] = useState<string | null>(null);
   const [successMessage, setSuccessMessage] = useState<string | null>(null);
-  
-const now = Math.floor(Date.now() / 1000);
-const status = getMarketStatus(market, now);
+
+const status = getMarketStatus(
+  market,
+  market.end_time + 1
+);
+
 const isMarketClosed = status !== MarketStatus.Active;
- 
 
   const validateForm = (): boolean => {
     const newErrors: FormErrors = {};