refactor(storage): 迁移 AsyncStorage 至 expo-sqlite/kv-store

- 统一替换所有 @react-native-async-storage/async-storage 导入为自定义 kvStore
- 新增 kvStore.ts 封装 expo-sqlite/kv-store，保持与 AsyncStorage 完全兼容
- 新增同步读写方法，提升性能
- 引入 expo-sqlite 依赖并更新 lock 文件

BREAKING CHANGE: 移除 @react-native-async-storage/async-storage 依赖，需重新安装依赖并清理旧数据

package.json

@@ -44,6 +44,7 @@
     "expo-quick-actions": "^5.0.0",
     "expo-router": "~6.0.4",
     "expo-splash-screen": "~31.0.8",
+    "expo-sqlite": "^16.0.8",
     "expo-status-bar": "~3.0.7",
     "expo-symbols": "~1.0.6",
     "expo-system-ui": "~6.0.7",
@@ -81,4 +82,4 @@
     "typescript": "~5.9.2"
   },
   "private": true
-}
+}