Implement PWA state management for improved iOS background persistence

Co-authored-by: jxxghp <jxxghp@163.com>

src/types/pwa.d.ts

@@ -0,0 +1,26 @@
+/**
+ * PWA相关的类型声明
+ */
+
+// 扩展Window接口
+declare global {
+  interface Window {
+    pwaStateController?: import('@/utils/pwaStateManager').PWAStateController
+    orientation?: number
+  }
+
+  interface Navigator {
+    standalone?: boolean
+    setAppBadge?: (count: number) => Promise<void>
+    clearAppBadge?: () => Promise<void>
+  }
+
+  // 自定义事件类型
+  interface WindowEventMap {
+    'pwaStateRestored': CustomEvent<{
+      state: import('@/utils/pwaStateManager').PWAState
+    }>
+  }
+}
+
+export {}