Implement handling for new iCard swiper (#383)

Handles our new iCard swiper, which outputs format "ACMCARD(4
digits)(UIN)(otherstuff)"

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **New Features**
* Added ACM card scanning support to the ticket entry flow. Users can
now scan their physical ACM card to automatically retrieve their event
tickets, replacing the need for manual identity entry. Invalid scans
provide helpful error feedback.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: devksingh4

src/ui/pages/tickets/ScanTickets.page.tsx

@@ -564,6 +564,18 @@ const ScanTicketsPageInternal: React.FC<ScanTicketsPageProps> = ({
 
       let email = inputValue;
 
+      // Check if input is from ACM card swiper (format: ACMCARD followed by 4 digits, followed by 9 digits)
+      if (email.startsWith("ACMCARD")) {
+        const uinMatch = email.match(/^ACMCARD(\d{4})(\d{9})/);
+        if (!uinMatch) {
+          setError("Invalid card swipe. Please try again.");
+          setIsLoading(false);
+          setShowModal(true);
+          return;
+        }
+        email = uinMatch[2]; // Extract the 9-digit UIN
+      }
+
       // Check if input is UIN (all digits)
       if (/^\d+$/.test(email)) {
         try {