feat: Add invite token-based user registration and an admin interface for token management.

public/s/js/f0ck.js

@@ -71,6 +71,38 @@ window.requestAnimFrame = (function () {
     });
   }
 
+  // Register Modal Logic
+  const registerBtn = document.getElementById('nav-register-btn');
+  const registerModal = document.getElementById('register-modal');
+  const registerClose = document.getElementById('register-modal-close');
+
+  if (registerBtn && registerModal) {
+    registerBtn.addEventListener('click', (e) => {
+      e.preventDefault();
+      registerModal.style.display = 'flex';
+      // Close dropdown
+      if (visitorMenu) visitorMenu.classList.remove('show');
+    });
+
+    if (registerClose) {
+      registerClose.addEventListener('click', () => {
+        registerModal.style.display = 'none';
+      });
+    }
+
+    registerModal.addEventListener('click', (e) => {
+      if (e.target === registerModal) {
+        registerModal.style.display = 'none';
+      }
+    });
+
+    document.addEventListener('keydown', (e) => {
+      if (e.key === 'Escape' && registerModal.style.display === 'flex') {
+        registerModal.style.display = 'none';
+      }
+    });
+  }
+
   // Initialize background preference
   if (localStorage.getItem('background') == undefined) {
     localStorage.setItem('background', 'true');