feat(health): 完善HealthKit权限管理和数据获取系统

- 重构权限管理，新增SimpleEventEmitter实现状态监听
- 实现完整的健身圆环数据获取（活动热量、锻炼时间、站立小时）
- 优化组件状态管理，支持实时数据刷新和权限状态响应
- 新增useHealthPermissions Hook，简化权限状态管理
- 完善iOS原生代码，支持按小时统计健身数据
- 优化应用启动时权限初始化流程，避免启动弹窗

BREAKING CHANGE: FitnessRingsCard组件API变更，移除手动传参改为自动获取数据

app/(tabs)/statistics.tsx

@@ -95,28 +95,6 @@ export default function ExploreScreen() {
   const oxygenSaturation = useMockData ? (mockData?.oxygenSaturation ?? null) : (healthData?.oxygenSaturation ?? null);
 
 
-  const fitnessRingsData = useMockData ? {
-    activeCalories: mockData?.activeCalories ?? 0,
-    activeCaloriesGoal: mockData?.activeCaloriesGoal ?? 350,
-    exerciseMinutes: mockData?.exerciseMinutes ?? 0,
-    exerciseMinutesGoal: mockData?.exerciseMinutesGoal ?? 30,
-    standHours: mockData?.standHours ?? 0,
-    standHoursGoal: mockData?.standHoursGoal ?? 12,
-  } : (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,
-  });
 
   // 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);
@@ -564,7 +542,6 @@ export default function ExploreScreen() {
             <FloatingCard style={styles.masonryCard}>
               <SleepCard
                 selectedDate={currentSelectedDate}
-                onPress={() => pushIfAuthedElseLogin(`/sleep-detail?date=${dayjs(currentSelectedDate).format('YYYY-MM-DD')}`)}
               />
             </FloatingCard>
           </View>
@@ -573,12 +550,7 @@ export default function ExploreScreen() {
           <View style={styles.masonryColumn}>
             <FloatingCard style={styles.masonryCard} delay={250}>
               <FitnessRingsCard
-                activeCalories={fitnessRingsData.activeCalories}
-                activeCaloriesGoal={fitnessRingsData.activeCaloriesGoal}
-                exerciseMinutes={fitnessRingsData.exerciseMinutes}
-                exerciseMinutesGoal={fitnessRingsData.exerciseMinutesGoal}
-                standHours={fitnessRingsData.standHours}
-                standHoursGoal={fitnessRingsData.standHoursGoal}
+                selectedDate={currentSelectedDate}
                 resetToken={animToken}
               />
             </FloatingCard>