feat: 添加 PWA 安装支持，包括安装横幅和按钮；更新国际化文本；配置 PWA 清单和缓存策略

packages/distribute/pages/index.vue

@@ -137,7 +137,12 @@ useHead({
     </UContainer>
 
     <!-- Main Content -->
-    <UContainer class="py-8">
+    <UContainer>
+      <!-- PWA Install Banner -->
+      <div class="mb-6">
+        <PWAInstallBanner />
+      </div>
+
       <!-- Search and Filter -->
       <div class="mb-8 space-y-4">
         <!-- Search -->