feat: 更新 PWA 安装逻辑，添加 Service Worker 注册和安装提示处理

src/views/pwa/download.vue

@@ -6,46 +6,52 @@ import IconParkOutlineDownload from "~icons/icon-park-outline/download";
 import IconParkOutlinePhone from "~icons/icon-park-outline/phone";
 import IconParkOutlineShare from "~icons/icon-park-outline/share";
 
-const { showInstallButton, isInstalled, promptInstall, isIOS, isIOSSafari } = usePWAInstall();
+const { canInstall, isInstalled, install, isIOS, isIOSSafari } = usePWAInstall();
 const platform = usePlatform();
 
 const appName = "Riwa";
 const isLoading = ref(false);
-const showIOSGuide = ref(false);
+
+// 调试日志
+onMounted(() => {
+  console.log("[Download Page] Mounted");
+  console.log("[Download Page] platform:", platform);
+  console.log("[Download Page] canInstall:", canInstall.value);
+  console.log("[Download Page] isInstalled:", isInstalled.value);
+  console.log("[Download Page] isIOS:", isIOS);
+  console.log("[Download Page] isIOSSafari:", isIOSSafari);
+});
 
 // 检测用户是否卸载过应用
 const wasUninstalled = computed(() => {
-  // 如果localStorage中有标记表示曾经安装过，但当前未安装
   const wasInstalled = localStorage.getItem("pwa-was-installed");
   return wasInstalled === "true" && !isInstalled.value;
 });
 
-// 显示下载按钮的条件：
-// 1. 浏览器环境
-// 2. 未安装或曾经卸载过
-// 3. Android 或有安装提示事件
+// 显示下载按钮的条件
 const shouldShowDownloadButton = computed(() => {
-  return platform === "browser" && (!isInstalled.value || wasUninstalled.value) && (showInstallButton.value || wasUninstalled.value);
+  const result = platform === "browser" && !isInstalled.value && (canInstall.value || isIOSSafari);
+  console.log("[Download Page] shouldShowDownloadButton:", result);
+  return result;
 });
 
-// iOS 安装指引
-async function showIOSInstallGuide() {
-  showIOSGuide.value = true;
-}
-
 // 处理安装
 async function handleInstall() {
   if (isIOSSafari) {
-    await showIOSInstallGuide();
+    const alert = await alertController.create({
+      header: "iOS 安装指引",
+      message: "请点击浏览器底部的分享按钮，然后选择\"添加到主屏幕\"",
+      buttons: ["知道了"],
+    });
+    await alert.present();
     return;
   }
 
   isLoading.value = true;
   try {
-    const result = await promptInstall();
+    const result = await install();
 
-    if (result.outcome === "accepted") {
-      // 记录已安装状态
+    if (result.success && result.outcome === "accepted") {
       localStorage.setItem("pwa-was-installed", "true");
 
       const alert = await alertController.create({
@@ -56,7 +62,12 @@ async function handleInstall() {
       await alert.present();
     }
     else if (result.outcome === "ios-instruction") {
-      await showIOSInstallGuide();
+      const alert = await alertController.create({
+        header: "iOS 安装指引",
+        message: "请点击浏览器底部的分享按钮，然后选择\"添加到主屏幕\"",
+        buttons: ["知道了"],
+      });
+      await alert.present();
     }
   }
   catch (error) {