feat: 更新应用名称和图标，优化用户界面

- 将应用名称修改为“Health Bot”，提升品牌识别度
- 更新应用图标为 logo.png，确保视觉一致性
- 删除不再使用的 ai-coach-chat 页面，简化代码结构
- 更新多个页面的导航和按钮文本，提升用户体验
- 添加体重历史记录功能，支持用户追踪健康数据
- 优化 Redux 状态管理，确保数据处理的准确性和稳定性

store/userSlice.ts

@@ -23,6 +23,13 @@ export type UserState = {
   loading: boolean;
   error: string | null;
   privacyAgreed: boolean;
+  weightHistory: WeightHistoryItem[];
+};
+
+export type WeightHistoryItem = {
+  weight: string;
+  source: string;
+  createdAt: string;
 };
 
 export const DEFAULT_MEMBER_NAME = '普拉提星球学员';
@@ -35,6 +42,7 @@ const initialState: UserState = {
   loading: false,
   error: null,
   privacyAgreed: false,
+  weightHistory: [],
 };
 
 export type LoginPayload = Record<string, any> & {
@@ -151,6 +159,18 @@ export const fetchMyProfile = createAsyncThunk('user/fetchMyProfile', async (_,
   }
 });
 
+// 获取用户体重历史记录
+export const fetchWeightHistory = createAsyncThunk('user/fetchWeightHistory', async (_, { rejectWithValue }) => {
+  try {
+    const data: WeightHistoryItem[] = await api.get('/api/users/weight-history');
+    console.log('fetchWeightHistory', data);
+    return data;
+  } catch (err: any) {
+    return rejectWithValue(err?.message ?? '获取用户体重历史记录失败');
+  }
+});
+
+
 const userSlice = createSlice({
   name: 'user',
   initialState,
@@ -208,6 +228,12 @@ const userSlice = createSlice({
       })
       .addCase(setPrivacyAgreed.fulfilled, (state) => {
         state.privacyAgreed = true;
+      })
+      .addCase(fetchWeightHistory.fulfilled, (state, action) => {
+        state.weightHistory = action.payload;
+      })
+      .addCase(fetchWeightHistory.rejected, (state, action) => {
+        state.error = (action.payload as string) ?? '获取用户体重历史记录失败';
       });
   },
 });