fix(sw): 延迟注册Service Worker以提升页面稳定性

- 在页面加载完成后延迟3秒再注册Service Worker
- 避免Service Worker注册影响页面初始渲染性能
- 确保页面资源加载完成后再进行Service Worker初始化

about.html

@@ -435,6 +435,7 @@
 <script>
     if ('serviceWorker' in navigator) {
         window.addEventListener('load', function() {
+            setTimeout(() => {
                 navigator.serviceWorker.register('./js/sw.js')
                     .then(function(registration) {
                         console.log('SW registered: ', registration);
@@ -442,6 +443,8 @@
                     .catch(function(registrationError) {
                         console.log('SW registration failed: ', registrationError);
                     });
+            }, 3000); // 页面稳定后再注册
+
         });
     }
 </script>

index.html

@@ -421,6 +421,7 @@
 <script>
     if ('serviceWorker' in navigator) {
         window.addEventListener('load', function () {
+            setTimeout(() => {
                 navigator.serviceWorker.register('./js/sw.js')
                     .then(function(registration) {
                         console.log('SW registered: ', registration);
@@ -428,6 +429,7 @@
                     .catch(function(registrationError) {
                         console.log('SW registration failed: ', registrationError);
                     });
+            }, 3000); // 页面稳定后再注册
         });
     }
 </script>