Update index.html

index.html

@@ -638,6 +638,18 @@ document.addEventListener('DOMContentLoaded', function() {
         video.load();
     }
 });
+
+// sw-register.js
+if ('serviceWorker' in navigator) {
+  window.addEventListener('load', () => {
+    navigator.serviceWorker.register('/service-worker.js').then(registration => {
+      alert('SW registered:' + registration);
+    }).catch(error => {
+      alert('SW registration failed:' + error);
+    });
+  });
+}
+
 </script>
     <!-- テクノロジー風背景 -->
     <div class="tech-background" id="techBg"></div>