feat: implement lazy singleton pattern for repository instances and update related imports

src/data/repositories/auth_repository.ts

@@ -1,17 +1,5 @@
 "use client";
 
-/**
- * AuthRepository
- *
- * 认证仓库：编排远程 API + 本地 AuthStorage + UserStorage。
- * 行为对齐原 Dart `lib/data/repositories/auth_repository_impl.dart`：
- *   - 登录成功后调 `_saveLoginData` 持久化 token + User
- *   - 登出先调 API，再强制清本地态（无论 API 成败）
- *   - `getCurrentUser` 成功后尽力写本地 User 缓存（不因缓存失败影响主流程）
- *   - 写 storage 失败用 `Logger.warn` 记录，不让本地缓存失败影响主流程
- *
- * 
- */
 import { AuthApi, authApi } from "@/data/services/api";
 import {
   AppleLoginRequest,
@@ -32,6 +20,7 @@ import { AppEnvUtil, Result, Logger } from "@/utils";
 import type { IAuthRepository } from "@/data/repositories/interfaces";
 import { AuthStorage, type IAuthStorage } from "@/data/storage/auth";
 import { UserStorage, type IUserStorage } from "@/data/storage/user";
+import { createLazySingleton } from "./lazy_singleton";
 
 const log = new Logger("DataRepositoriesAuthRepository");
 
@@ -312,11 +301,14 @@ export class AuthRepository implements IAuthRepository {
   }
 }
 
-/** 全局单例。 */
-export const authRepository = new AuthRepository(
-  authApi,
-  AuthStorage.getInstance(),
-  UserStorage.getInstance(),
+/** 全局懒单例。 */
+export const getAuthRepository = createLazySingleton<IAuthRepository>(
+  () =>
+    new AuthRepository(
+      authApi,
+      AuthStorage.getInstance(),
+      UserStorage.getInstance(),
+    ),
 );
 
 function withTestAccountFlag<T extends Record<string, unknown>>(