refactor(health): remove HRV field and improve notification types

- Remove heart rate variability (hrv) field from health data interfaces and implementations
- Update default member name to Chinese localization
- Replace type assertions with proper enum types in notification schedulers

utils/health.ts

@@ -207,7 +207,6 @@ export type HourlyStandData = {
 
 export type TodayHealthData = {
   activeEnergyBurned: number; // kilocalories
-  hrv: number | null; // 心率变异性 (ms)
   // 健身圆环数据
   activeCalories: number;
   activeCaloriesGoal: number;
@@ -607,7 +606,6 @@ export async function fetchMaximumHeartRate(_options: HealthDataOptions): Promis
 function getDefaultHealthData(): TodayHealthData {
   return {
     activeEnergyBurned: 0,
-    hrv: null,
     activeCalories: 0,
     activeCaloriesGoal: 350,
     exerciseMinutes: 0,
@@ -628,19 +626,16 @@ export async function fetchHealthDataForDate(date: Date): Promise<TodayHealthDat
     // 并行获取所有健康数据
     const [
       activeEnergyBurned,
-      hrv,
       activitySummary,
       heartRate
     ] = await Promise.all([
       fetchActiveEnergyBurned(options),
-      fetchHeartRateVariability(options),
       fetchActivitySummary(options),
       fetchHeartRate(options)
     ]);
 
     return {
       activeEnergyBurned,
-      hrv,
       activeCalories: Math.round(activitySummary?.activeEnergyBurned || 0),
       activeCaloriesGoal: Math.round(activitySummary?.activeEnergyBurnedGoal || 350),
       exerciseMinutes: Math.round(activitySummary?.appleExerciseTime || 0),