Add personal email to auth whitelist for local branch

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/login.html

@@ -127,7 +127,7 @@
                 const userData = parseJwt(credential);
 
                 // Email whitelist verification
-                const allowedEmails = ['your-email@gmail.com'];
+                const allowedEmails = ['xiannvweideta@gmail.com'];
                 if (!allowedEmails.includes(userData.email)) {
                     document.getElementById('error-msg').textContent = 'Access denied: unauthorized email.';
                     document.getElementById('error-msg').style.display = 'block';