fix(today)：健身卡片单位

@@ -115,12 +115,33 @@ class TodayActivityCard extends StatelessWidget {
         var activityStr = (activity > 0 && (activityTarget?.move ?? 0) > 0)
         var activityStr = (activity > 0 && (activityTarget?.move ?? 0) > 0)
             ? '$activity'
             ? '$activity'
             : '--';
             : '--';
-        var exerciseStr = (exercise > 0 && (activityTarget?.exercise ?? 0) > 0)
-            ? '${exercise % 60}'
-            : '--';
-        var standStr = (stand > 0 && (activityTarget?.stand ?? 0) > 0)
-            ? '${stand ~/ 3600}'
-            : '--';
+        // exercise 单位为秒，转换为小时+分钟
+        List<_MetricValueSpan> exerciseSpans;
+        if (exercise > 0 && (activityTarget?.exercise ?? 0) > 0) {
+          final exHours = exercise ~/ 3600;
+          final exMinutes = (exercise % 3600) ~/ 60;
+          exerciseSpans = [
+            if (exHours > 0) _MetricValueSpan('$exHours', '小时'),
+            if (exMinutes > 0 || exHours == 0)
+              _MetricValueSpan(exMinutes > 0 ? '$exMinutes' : '0', '分钟'),
+          ];
+        } else {
+          exerciseSpans = [_MetricValueSpan('--', '分钟')];
+        }
+
+        // stand 单位为秒，转换为小时+分钟
+        List<_MetricValueSpan> standSpans;
+        if (stand > 0 && (activityTarget?.stand ?? 0) > 0) {
+          final stHours = stand ~/ 3600;
+          final stMinutes = (stand % 3600) ~/ 60;
+          standSpans = [
+            if (stHours > 0) _MetricValueSpan('$stHours', '小时'),
+            if (stMinutes > 0 || stHours == 0)
+              _MetricValueSpan(stMinutes > 0 ? '$stMinutes' : '0', '分钟'),
+          ];
+        } else {
+          standSpans = [_MetricValueSpan('--', '小时')];
+        }
         double activityProgress =
         double activityProgress =
             (activity > 0 && (activityTarget?.move ?? 0) > 0)
             (activity > 0 && (activityTarget?.move ?? 0) > 0)
                 ? (activity / (activityTarget?.move ?? 0)) * 360
                 ? (activity / (activityTarget?.move ?? 0)) * 360
@@ -149,19 +170,12 @@ class TodayActivityCard extends StatelessWidget {
             _MetricData(
             _MetricData(
               label: context.l10n.exercise,
               label: context.l10n.exercise,
               labelColor: context.colors.chartGreen,
               labelColor: context.colors.chartGreen,
-              valueSpans: [
-                _MetricValueSpan(
-                  exerciseStr,
-                  '分钟',
-                ),
-              ],
+              valueSpans: exerciseSpans,
             ),
             ),
             _MetricData(
             _MetricData(
               label: context.l10n.standing,
               label: context.l10n.standing,
               labelColor: const Color(0xFF7B9BFB),
               labelColor: const Color(0xFF7B9BFB),
-              valueSpans: [
-                _MetricValueSpan(standStr, '小时'),
-              ],
+              valueSpans: standSpans,
             ),
             ),
           ],
           ],
           rightWidget: Container(
           rightWidget: Container(