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

store/challengeSlice.ts

@@ -1,5 +1,5 @@
 import { buildDefaultCustomFromPlan, DayPlan, ExerciseCustomConfig, generatePilates30DayPlan, PilatesLevel } from '@/utils/pilatesPlan';
-import AsyncStorage from '@react-native-async-storage/async-storage';
+import AsyncStorage from '@/utils/kvStore';
 import { createAsyncThunk, createSlice, PayloadAction } from '@reduxjs/toolkit';
 
 export type DayStatus = 'locked' | 'available' | 'completed';

store/exerciseLibrarySlice.ts

@@ -5,7 +5,7 @@ import {
   type ExerciseConfigResponse,
   type ExerciseLibraryItem,
 } from '@/services/exercises';
-import AsyncStorage from '@react-native-async-storage/async-storage';
+import AsyncStorage from '@/utils/kvStore';
 import { createAsyncThunk, createSlice, PayloadAction } from '@reduxjs/toolkit';
 
 export interface ExerciseLibraryState {

store/trainingPlanSlice.ts

@@ -1,5 +1,5 @@
 import { CreateTrainingPlanDto, PlanGoal, PlanMode, TrainingPlan, trainingPlanApi } from '@/services/trainingPlanApi';
-import AsyncStorage from '@react-native-async-storage/async-storage';
+import AsyncStorage from '@/utils/kvStore';
 import { createAsyncThunk, createSlice, PayloadAction } from '@reduxjs/toolkit';
 
 

store/userSlice.ts

@@ -1,6 +1,6 @@
 import { api, setAuthToken, STORAGE_KEYS } from '@/services/api';
 import { updateUser, UpdateUserDto } from '@/services/users';
-import AsyncStorage from '@react-native-async-storage/async-storage';
+import AsyncStorage from '@/utils/kvStore';
 import { createAsyncThunk, createSelector, createSlice, PayloadAction } from '@reduxjs/toolkit';
 import dayjs from 'dayjs';