feat: 更新健康数据管理功能及相关组件

- 新增 healthSlice，用于管理健康数据的 Redux 状态
- 在 Statistics 组件中整合健康数据获取逻辑，优化数据展示
- 更新 NutritionRadarCard 组件，调整卡路里计算区域，提升用户体验
- 移除不必要的状态管理，简化组件逻辑
- 优化代码结构，提升可读性和维护性

app/(tabs)/statistics.tsx

@@ -14,8 +14,8 @@ import { getTabBarBottomPadding } from '@/constants/TabBar';
 import { useAppDispatch, useAppSelector } from '@/hooks/redux';
 import { useAuthGuard } from '@/hooks/useAuthGuard';
 import { useBackgroundTasks } from '@/hooks/useBackgroundTasks';
-import { useColorScheme } from '@/hooks/useColorScheme';
 import { calculateNutritionSummary, getDietRecords, NutritionSummary } from '@/services/dietRecords';
+import { selectHealthDataByDate, setHealthData } from '@/store/healthSlice';
 import { fetchDailyMoodCheckins, selectLatestMoodRecordByDate } from '@/store/moodSlice';
 import { getMonthDaysZh, getTodayIndexInMonth } from '@/utils/date';
 import { ensureHealthPermissions, fetchHealthDataForDate } from '@/utils/health';
@@ -85,11 +85,7 @@ const FloatingCard = ({ children, delay = 0, style }: {
 };
 
 export default function ExploreScreen() {
-  const theme = (useColorScheme() ?? 'light') as 'light' | 'dark';
-  const colorTokens = Colors[theme];
-
   const stepGoal = useAppSelector((s) => s.user.profile?.dailyStepsGoal) ?? 2000;
-  const userProfile = useAppSelector((s) => s.user.profile);
 
   const { pushIfAuthedElseLogin, isLoggedIn } = useAuthGuard();
 
@@ -101,28 +97,46 @@ export default function ExploreScreen() {
     return getTabBarBottomPadding(tabBarHeight) + (insets?.bottom ?? 0);
   }, [tabBarHeight, insets?.bottom]);
 
-  // HealthKit: 每次页面聚焦都拉取今日数据
-  const [stepCount, setStepCount] = useState<number | null>(null);
-  const [activeCalories, setActiveCalories] = useState<number | null>(null);
-  // 基础代谢率（千卡）
-  const [basalMetabolism, setBasalMetabolism] = useState<number | null>(null);
-  // 睡眠时长（分钟）
-  const [sleepDuration, setSleepDuration] = useState<number | null>(null);
-  // HRV数据
-  const [hrvValue, setHrvValue] = useState<number>(0);
-  const [hrvUpdateTime, setHrvUpdateTime] = useState<Date>(new Date());
-  // 健身圆环数据
-  const [fitnessRingsData, setFitnessRingsData] = useState({
+  // 获取当前选中日期
+  const getCurrentSelectedDate = () => {
+    const days = getMonthDaysZh();
+    return days[selectedIndex]?.date?.toDate() ?? new Date();
+  };
+
+
+  // 获取当前选中日期
+  const currentSelectedDate = getCurrentSelectedDate();
+  const currentSelectedDateString = dayjs(currentSelectedDate).format('YYYY-MM-DD');
+
+  // 从 Redux 获取指定日期的健康数据
+  const healthData = useAppSelector(selectHealthDataByDate(currentSelectedDateString));
+
+  // 解构健康数据
+  const stepCount = healthData?.steps ?? null;
+  const activeCalories = healthData?.activeEnergyBurned ?? null;
+  const basalMetabolism = healthData?.basalEnergyBurned ?? null;
+  const sleepDuration = healthData?.sleepDuration ?? null;
+  const hrvValue = healthData?.hrv ?? 0;
+  const oxygenSaturation = healthData?.oxygenSaturation ?? null;
+  const heartRate = healthData?.heartRate ?? null;
+  const fitnessRingsData = healthData ? {
+    activeCalories: healthData.activeEnergyBurned,
+    activeCaloriesGoal: healthData.activeCaloriesGoal,
+    exerciseMinutes: healthData.exerciseMinutes,
+    exerciseMinutesGoal: healthData.exerciseMinutesGoal,
+    standHours: healthData.standHours,
+    standHoursGoal: healthData.standHoursGoal,
+  } : {
     activeCalories: 0,
     activeCaloriesGoal: 350,
     exerciseMinutes: 0,
     exerciseMinutesGoal: 30,
     standHours: 0,
-    standHoursGoal: 12
-  });
-  // 血氧饱和度和心率数据
-  const [oxygenSaturation, setOxygenSaturation] = useState<number | null>(null);
-  const [heartRate, setHeartRate] = useState<number | null>(null);
+    standHoursGoal: 12,
+  };
+
+  // HRV更新时间
+  const [hrvUpdateTime, setHrvUpdateTime] = useState<Date>(new Date());
 
   // 用于触发动画重置的 token（当日期或数据变化时更新）
   const [animToken, setAnimToken] = useState(0);
@@ -140,15 +154,10 @@ export default function ExploreScreen() {
 
   const getDateKey = (d: Date) => `${dayjs(d).year()}-${dayjs(d).month() + 1}-${dayjs(d).date()}`;
 
-  // 获取当前选中日期
-  const getCurrentSelectedDate = () => {
-    const days = getMonthDaysZh();
-    return days[selectedIndex]?.date?.toDate() ?? new Date();
-  };
 
   // 从 Redux 获取当前日期的心情记录
   const currentMoodCheckin = useAppSelector(selectLatestMoodRecordByDate(
-    dayjs(getCurrentSelectedDate()).format('YYYY-MM-DD')
+    currentSelectedDateString
   ));
 
   // 加载心情数据
@@ -205,33 +214,17 @@ export default function ExploreScreen() {
       console.log('设置UI状态:', data);
       // 仅当该请求仍是最新时，才应用结果
       if (latestRequestKeyRef.current === requestKey) {
-        setStepCount(data.steps);
-        setActiveCalories(Math.round(data.activeEnergyBurned));
-        setBasalMetabolism(Math.round(data.basalEnergyBurned));
-        setSleepDuration(data.sleepDuration);
-        // 更新健身圆环数据
-        setFitnessRingsData({
-          activeCalories: data.activeEnergyBurned,
-          activeCaloriesGoal: data.activeCaloriesGoal,
-          exerciseMinutes: data.exerciseMinutes,
-          exerciseMinutesGoal: data.exerciseMinutesGoal,
-          standHours: data.standHours,
-          standHoursGoal: data.standHoursGoal
-        });
+        const dateString = dayjs(derivedDate).format('YYYY-MM-DD');
 
-        const hrv = data.hrv ?? 0;
-        setHrvValue(hrv);
+        // 使用 Redux 存储健康数据
+        dispatch(setHealthData({
+          date: dateString,
+          data: data
+        }));
 
         // 更新HRV数据时间
         setHrvUpdateTime(new Date());
 
-        // 设置血氧饱和度和心率数据
-        setOxygenSaturation(data.oxygenSaturation ?? null);
-        setHeartRate(data.heartRate ?? null);
-
-        console.log('血氧饱和度数据:', data.oxygenSaturation);
-        console.log('心率数据:', data.heartRate);
-
         setAnimToken((t) => t + 1);
       } else {
         console.log('忽略过期健康数据请求结果，key=', requestKey, '最新key=', latestRequestKeyRef.current);
@@ -240,9 +233,6 @@ export default function ExploreScreen() {
 
     } catch (error) {
       console.error('HealthKit流程出现异常:', error);
-      // 重置血氧饱和度和心率数据
-      setOxygenSaturation(null);
-      setHeartRate(null);
     }
   };
 
@@ -281,7 +271,7 @@ export default function ExploreScreen() {
   useFocusEffect(
     React.useCallback(() => {
       // 聚焦时按当前选中的日期加载，避免与用户手动选择的日期不一致
-      const currentDate = getCurrentSelectedDate();
+      const currentDate = currentSelectedDate;
       if (currentDate) {
         loadHealthData(currentDate);
         if (isLoggedIn) {
@@ -317,6 +307,7 @@ export default function ExploreScreen() {
     }
   };
 
+
   return (
     <View style={styles.container}>
       {/* 背景渐变 */}