Enhance Registration UI and fix PhonePe calendar redirect

Author: macayu17

backend/src/routes/registration.routes.js

@@ -280,7 +280,12 @@ router.post('/orders/:id/verify-phonepe', async (req, res) => {
       // Enqueue ticket generation
       await enqueueTicketGeneration(order.id);
 
-      return res.json({ success: true, message: 'Payment verified successfully' });
+      return res.json({
+        success: true,
+        message: 'Payment verified successfully',
+        eventId: order.registration.eventId,
+        orderId: order.id
+      });
     }
 
     if (statusResponse.paymentState === 'PENDING') {

frontend/src/pages/public/PhonePeCallbackPage.jsx

@@ -30,7 +30,12 @@ export default function PhonePeCallbackPage() {
                 setStatus('success');
                 toast.success('Payment successful! Check your email for the ticket.');
                 setTimeout(() => {
-                    navigate('/success', { state: { orderId } });
+                    navigate('/success', {
+                        state: {
+                            orderId,
+                            eventId: response.data.eventId
+                        }
+                    });
                 }, 2000);
             } else if (response.data.state === 'PENDING') {
                 setStatus('pending');