fix: Explicitly import UI components in demo to ensure registration

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/encryptid/demo.html

@@ -428,8 +428,14 @@
       signData,
       verifySignature,
       AuthLevel,
+      // Import UI components to trigger custom element registration
+      GuardianSetupElement,
+      EncryptIDLoginButton,
     } from '/dist/index.js';
 
+    // Force side effects (custom element registration)
+    console.log('EncryptID components loaded:', GuardianSetupElement.name, EncryptIDLoginButton.name);
+
     // ========================================================================
     // CAPABILITY DETECTION
     // ========================================================================