feat: 更新多个组件以优化用户体验和功能

- 在 CoachScreen 中移除不必要的 router 引入，简化代码结构
- 在 PersonalScreen 中移除未使用的 colorScheme 引入，优化组件性能
- 更新 NutritionRadarCard 组件，新增卡路里计算功能，提升营养数据展示
- 修改 Statistics 组件，调整样式以增强视觉效果
- 移除 iOS 项目中的多余健康数据权限设置，简化配置

app/(tabs)/personal.tsx

@@ -1,10 +1,8 @@
 import ActivityHeatMap from '@/components/ActivityHeatMap';
 import { PRIVACY_POLICY_URL, USER_AGREEMENT_URL } from '@/constants/Agree';
-import { Colors } from '@/constants/Colors';
 import { getTabBarBottomPadding } from '@/constants/TabBar';
 import { useAppDispatch, useAppSelector } from '@/hooks/redux';
 import { useAuthGuard } from '@/hooks/useAuthGuard';
-import { useColorScheme } from '@/hooks/useColorScheme';
 import { useNotifications } from '@/hooks/useNotifications';
 import { DEFAULT_MEMBER_NAME, fetchActivityHistory, fetchMyProfile } from '@/store/userSlice';
 import { Ionicons } from '@expo/vector-icons';
@@ -21,16 +19,14 @@ export default function PersonalScreen() {
   const { confirmLogout, confirmDeleteAccount, isLoggedIn, pushIfAuthedElseLogin } = useAuthGuard();
   const insets = useSafeAreaInsets();
   const tabBarHeight = useBottomTabBarHeight();
-  const colorScheme = useColorScheme();
-  
+
   // 推送通知相关
   const {
-    isInitialized,
     permissionStatus,
     requestPermission,
     sendNotification,
   } = useNotifications();
-  
+
   const [notificationEnabled, setNotificationEnabled] = useState(false);
 
   // 计算底部间距
@@ -38,9 +34,6 @@ export default function PersonalScreen() {
     return getTabBarBottomPadding(tabBarHeight) + (insets?.bottom ?? 0);
   }, [tabBarHeight, insets?.bottom]);
 
-  // 颜色主题
-  const colors = Colors[colorScheme ?? 'light'];
-
   // 直接使用 Redux 中的用户信息，避免重复状态管理
   const userProfile = useAppSelector((state) => state.user.profile);
 
@@ -116,9 +109,9 @@ export default function PersonalScreen() {
       <View style={styles.cardContainer}>
         <View style={styles.userInfoContainer}>
           <View style={styles.avatarContainer}>
-            <Image 
-              source={{ uri: userProfile.avatar || DEFAULT_AVATAR_URL }} 
-              style={styles.avatar} 
+            <Image
+              source={{ uri: userProfile.avatar || DEFAULT_AVATAR_URL }}
+              style={styles.avatar}
             />
           </View>
           <View style={styles.userDetails}>
@@ -183,7 +176,7 @@ export default function PersonalScreen() {
             {item.type === 'switch' ? (
               <Switch
                 value={item.switchValue || false}
-                onValueChange={item.onSwitchChange || (() => {})}
+                onValueChange={item.onSwitchChange || (() => { })}
                 trackColor={{ false: '#E5E5E5', true: '#9370DB' }}
                 thumbColor="#FFFFFF"
                 style={styles.switch}