fix: Add type guards for verifiedName and remove UI blocking delay

- Add proper type checking for verifiedName throughout component
- Remove 15-second artificial delay causing UI performance issues
- Add fallback text when verifiedName is undefined
- Improve error handling for verification process

components/EventAttendanceVerification.tsx

@@ -57,8 +57,6 @@ const EventAttendanceVerification: React.FC<EventAttendanceVerificationProps> =
         )
       );
 
-      // Add a minimum delay for the drumroll effect (15 seconds)
-      await new Promise(resolve => setTimeout(resolve, 15000));
       if (ethGlobalBrusselsPoap) {
         console.log('Found ETHGlobal Brussels POAP:', ethGlobalBrusselsPoap);
         setPoapDetails(ethGlobalBrusselsPoap);
@@ -74,7 +72,7 @@ const EventAttendanceVerification: React.FC<EventAttendanceVerificationProps> =
           role,
           date: ethGlobalBrusselsPoap.event.start_date,
           venue: EVENT_VENUE,
-          verifiedName: verifiedName,
+          verifiedName: typeof verifiedName === 'string' && verifiedName.length > 0 ? verifiedName : 'Unknown User',
           tokenId: ethGlobalBrusselsPoap.tokenId
         };
 
@@ -116,12 +114,22 @@ const EventAttendanceVerification: React.FC<EventAttendanceVerificationProps> =
       {!hasAnswered ? (
         <div className="text-center">
           <p className="text-base-content/70 mb-6">
-            Hello {verifiedName}, did you attend ETHGlobal Brussels in person?
+            {typeof verifiedName === 'string' && verifiedName.length > 0 ? (
+              <>Hello {verifiedName}, did you attend ETHGlobal Brussels in person?</>
+            ) : (
+              <>Did you attend ETHGlobal Brussels in person?</>
+            )}
           </p>
           <div className="flex justify-center gap-4">
             <button
               className="btn btn-primary"
-              onClick={() => handleAttendanceResponse(true)}
+              onClick={() => {
+                if (typeof verifiedName !== 'string' || verifiedName.length === 0) {
+                  setError('User verification required before proceeding');
+                  return;
+                }
+                handleAttendanceResponse(true);
+              }}
             >
               Yes, I attended
             </button>
@@ -146,7 +154,11 @@ const EventAttendanceVerification: React.FC<EventAttendanceVerificationProps> =
       ) : (
         <>
           <p className="text-base-content/70 mb-4">
-            Hello {verifiedName}, we're checking your attendance at ETHGlobal Brussels.
+            {typeof verifiedName === 'string' && verifiedName.length > 0 ? (
+              <>Hello {verifiedName}, we're checking your attendance at ETHGlobal Brussels.</>
+            ) : (
+              <>We're checking your attendance at ETHGlobal Brussels.</>
+            )}
           </p>
 
           {isVerifying && (