chore(deps): add unstorage and migrate ChatStorage to use SpAsyncUtil

src/data/storage/app/app_storage.ts

@@ -1,14 +1,14 @@
 "use client";
 
 /**
- * AppStorage 完整实现（静态类风格 / localStorage）
+ * AppStorage 完整实现（基于 unstorage 抽象）
  *
  * 对齐 Dart 端 `AppStorage`（lib/data/services/storage/app_storage.dart）：
  *   - PWA 对话框每日展示 / PWA 事件每日上报 / app-info 每日上报
  *   - 内部用 `yyyy-MM-dd` 字符串比对实现"每日一次"语义
  *
  * 注意：Dart 端是 `static class` 没有接口，本 TS 版本同样保持静态方法风格。
- * 通过 `LocalStorage` 单例 + 懒加载的私有 getter 访问底层存储。
+ * 通过 SpAsyncUtil 静态类访问底层存储（浏览器 localStorage / SSR memory 自动切换）。
  *
  * 语义：
  *   - `canXxx(today)` 返回 `true` 当且仅当"自上次记录以来日期变了"
@@ -17,23 +17,10 @@
  */
 
 import { Result, type Result as ResultT } from "@/utils/result";
+import { SpAsyncUtil } from "@/utils/storage";
 import { StorageKeys } from "../storage_keys";
-import { LocalStorage } from "@/utils/local-storage";
 
 export class AppStorage {
-  private static _ls: LocalStorage | null = null;
-
-  /** 懒加载 LocalStorage 单例，避免模块加载期触发 SSR 副作用。 */
-  private static get ls(): LocalStorage {
-    if (!AppStorage._ls) AppStorage._ls = LocalStorage.getInstance();
-    return AppStorage._ls;
-  }
-
-  /** @internal */
-  static _resetForTests(): void {
-    AppStorage._ls = null;
-  }
-
   // ---- PWA install dialog ----
 
   static async canShowPwaDialog(todayString: string): Promise<ResultT<boolean>> {
@@ -41,7 +28,7 @@ export class AppStorage {
   }
 
   static recordPwaDialogShown(todayString: string): Promise<ResultT<void>> {
-    return AppStorage.ls.setString(StorageKeys.lastPwaDialogShown, todayString);
+    return SpAsyncUtil.setString(StorageKeys.lastPwaDialogShown, todayString);
   }
 
   // ---- PWA event reporting ----
@@ -51,7 +38,7 @@ export class AppStorage {
   }
 
   static recordPwaEventReported(todayString: string): Promise<ResultT<void>> {
-    return AppStorage.ls.setString(StorageKeys.lastPwaEventReported, todayString);
+    return SpAsyncUtil.setString(StorageKeys.lastPwaEventReported, todayString);
   }
 
   // ---- app info reporting ----
@@ -61,7 +48,7 @@ export class AppStorage {
   }
 
   static recordAppInfoReported(todayString: string): Promise<ResultT<void>> {
-    return AppStorage.ls.setString(StorageKeys.lastAppInfoReported, todayString);
+    return SpAsyncUtil.setString(StorageKeys.lastAppInfoReported, todayString);
   }
 
   // ---- internal helpers ----
@@ -77,7 +64,7 @@ export class AppStorage {
     key: string,
     todayString: string,
   ): Promise<ResultT<boolean>> {
-    const r = await AppStorage.ls.getString(key);
+    const r = await SpAsyncUtil.getString(key);
     if (!r.success) return r;
     return Result.ok(r.data === null || r.data !== todayString);
   }