feat(ui):增加Isolate

 import 'dart:async';
 import 'dart:io';
 import 'dart:developer' as developer;
+import 'dart:isolate';
 import 'dart:math' as math;
 
 import 'package:flutter/foundation.dart';
@@ -307,14 +308,20 @@ class HealthRawDataCoreService {
       readChunkDays: readChunkDays,
     );
 
-    final result = calculate(
-      hrvPoints: hrvPoints,
-      heartRatePoints: heartRatePoints,
-      restingHeartRatePoints: restingHeartRatePoints,
-      sleepIntervals: sleepIntervals,
-      workoutIntervals: workoutIntervals,
-      startTime: math.min(hrvStartTime, heartRateStartTime),
-      endTime: effectiveEndTime,
+    final capturedUserId = userId;
+    final capturedStartTime = math.min(hrvStartTime, heartRateStartTime);
+    final result = await Isolate.run(
+      () => calculate(
+        userId: capturedUserId,
+        hrvPoints: hrvPoints,
+        heartRatePoints: heartRatePoints,
+        restingHeartRatePoints: restingHeartRatePoints,
+        sleepIntervals: sleepIntervals,
+        workoutIntervals: workoutIntervals,
+        startTime: capturedStartTime,
+        endTime: effectiveEndTime,
+      ),
+      debugName: 'HealthRawStressCalculator',
     );
     final newResult = result.copyWith(
       hrvStressPoints: _filterNewHrvStressPoints(
@@ -710,7 +717,8 @@ class HealthRawDataCoreService {
     return '当前非 Debug 模式，未记录本地上传日志';
   }
 
-  HealthRawStressCalculationResult calculate({
+  static HealthRawStressCalculationResult calculate({
+    required int userId,
     required List<HealthKitRawDataPoint> hrvPoints,
     required List<HealthKitRawDataPoint> heartRatePoints,
     required List<HealthKitRawDataPoint> restingHeartRatePoints,
@@ -721,7 +729,7 @@ class HealthRawDataCoreService {
     required int startTime,
     required int endTime,
   }) {
-    return HealthRawStressCalculator(userId: _userId).calculate(
+    return HealthRawStressCalculator(userId: userId).calculate(
       hrvPoints: hrvPoints,
       heartRatePoints: heartRatePoints,
       restingHeartRatePoints: restingHeartRatePoints,