feat(app): bug fixed

@@ -43,7 +43,7 @@ class _YearTrendCard extends StatelessWidget {
           Text(
             HealthReportSubjectScope.titleOf(
               context,
-              context.l10n.hrvDailyStressTrend,
+              context.l10n.hrvMonthlyStressTrend,
             ),
             style: _titleStyle,
           ),
@@ -449,6 +449,7 @@ class _DailyDistributionCard extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final extremeDays = _dailyStressExtremeDays(report);
     return _Card(
       child: Column(
         crossAxisAlignment: CrossAxisAlignment.start,
@@ -479,28 +480,73 @@ class _DailyDistributionCard extends StatelessWidget {
           ),
           const Divider(height: 25, color: _grid),
           _DateExtreme(
-              label: context.l10n.hrvMostStressed,
-              days: _extremeDays(report, maximum: true)),
+            label: context.l10n.hrvMostStressed,
+            days: extremeDays.mostStressed,
+          ),
           const SizedBox(height: 18),
           _DateExtreme(
-              label: context.l10n.hrvMostRelaxed,
-              days: _extremeDays(report, maximum: false)),
+            label: context.l10n.hrvMostRelaxed,
+            days: extremeDays.mostRelaxed,
+          ),
         ],
       ),
     );
   }
 
-  List<HrvDayReport> _extremeDays(YearlyHrvReport report,
-      {required bool maximum}) {
-    final days = report.days.where((day) => day.level != null).toList();
-    days.sort((a, b) {
-      final aValue = _stressRank(a.level!);
-      final bValue = _stressRank(b.level!);
-      final valueComparison =
-          maximum ? bValue.compareTo(aValue) : aValue.compareTo(bValue);
-      return valueComparison == 0 ? a.date.compareTo(b.date) : valueComparison;
-    });
-    return days.take(2).toList();
+  ({List<HrvDayReport> mostStressed, List<HrvDayReport> mostRelaxed})
+      _dailyStressExtremeDays(YearlyHrvReport report) {
+    final days = report.days.where((day) => day.level != null).toList()
+      ..sort(_compareByStressDescending);
+
+    final mostStressed = <HrvDayReport>[];
+    final mostRelaxed = <HrvDayReport>[];
+    if (days.isEmpty) {
+      return (mostStressed: mostStressed, mostRelaxed: mostRelaxed);
+    }
+
+    if (days.length == 1) {
+      final day = days.single;
+      if (_isStressedLevel(day.level!)) {
+        mostStressed.add(day);
+      } else {
+        mostRelaxed.add(day);
+      }
+      return (mostStressed: mostStressed, mostRelaxed: mostRelaxed);
+    }
+
+    mostStressed.add(days.first);
+    mostRelaxed.add(days.last);
+
+    if (days.length == 3) {
+      final middle = days[1];
+      if (_isStressedLevel(middle.level!)) {
+        mostStressed.add(middle);
+      } else {
+        mostRelaxed.add(middle);
+      }
+    } else if (days.length >= 4) {
+      mostStressed.add(days[1]);
+      mostRelaxed.add(days[days.length - 2]);
+    }
+
+    mostStressed.sort(_compareByDate);
+    mostRelaxed.sort(_compareByDate);
+    return (mostStressed: mostStressed, mostRelaxed: mostRelaxed);
+  }
+
+  int _compareByStressDescending(HrvDayReport a, HrvDayReport b) {
+    final valueComparison =
+        _stressRank(b.level!).compareTo(_stressRank(a.level!));
+    return valueComparison == 0 ? a.date.compareTo(b.date) : valueComparison;
+  }
+
+  int _compareByDate(HrvDayReport a, HrvDayReport b) {
+    return a.date.compareTo(b.date);
+  }
+
+  bool _isStressedLevel(HrvStressLevel level) {
+    return level == HrvStressLevel.attention ||
+        level == HrvStressLevel.overload;
   }
 
   int _stressRank(HrvStressLevel level) {

@@ -326,6 +326,7 @@
   "sleepQualityNormal": "Normal",
   "sleepQualityAttention": "Needs attention",
   "hrvDailyStressTrend": "Daily Stress Trend",
+  "hrvMonthlyStressTrend": "Monthly Stress Trend",
   "hrvMoreRelaxed": "More relaxed",
   "hrvMoreStressed": "More stressed",
   "hrvStressDistribution": "Stress Distribution",

@@ -498,6 +498,7 @@
   "sleepQualityNormal": "正常",
   "sleepQualityAttention": "注意",
   "hrvDailyStressTrend": "每日压力趋势",
+  "hrvMonthlyStressTrend": "每月压力趋势",
   "hrvMoreRelaxed": "较轻松",
   "hrvMoreStressed": "压力较大",
   "hrvStressDistribution": "压力分布",

@@ -2055,6 +2055,12 @@ abstract class AppLocalizations {
   /// **'每日压力趋势'**
   String get hrvDailyStressTrend;
 
+  /// No description provided for @hrvMonthlyStressTrend.
+  ///
+  /// In zh, this message translates to:
+  /// **'每月压力趋势'**
+  String get hrvMonthlyStressTrend;
+
   /// No description provided for @hrvMoreRelaxed.
   ///
   /// In zh, this message translates to:

@@ -1135,6 +1135,9 @@ class AppLocalizationsEn extends AppLocalizations {
   String get hrvDailyStressTrend => 'Daily Stress Trend';
 
   @override
+  String get hrvMonthlyStressTrend => 'Monthly Stress Trend';
+
+  @override
   String get hrvMoreRelaxed => 'More relaxed';
 
   @override

@@ -1071,6 +1071,9 @@ class AppLocalizationsZh extends AppLocalizations {
   String get hrvDailyStressTrend => '每日压力趋势';
 
   @override
+  String get hrvMonthlyStressTrend => '每月压力趋势';
+
+  @override
   String get hrvMoreRelaxed => '较轻松';
 
   @override