fix(today)：恢复睡眠合并

@@ -811,26 +811,26 @@ class _StressBarChartState extends State<_StressBarChart> {
             ..sort((a, b) => a.fromTime.compareTo(b.fromTime));
             ..sort((a, b) => a.fromTime.compareTo(b.fromTime));
 
 
           // 2. 合并相邻且间隔小于 2 小时的睡眠区间，避免因短暂醒来分段导致多个床图标或跨天首尾大面积相连
           // 2. 合并相邻且间隔小于 2 小时的睡眠区间，避免因短暂醒来分段导致多个床图标或跨天首尾大面积相连
-          // final mergedList = <V2SleepTimeRange>[];
-          // for (final range in sortedList) {
-          //   if (mergedList.isEmpty) {
-          //     mergedList.add(range);
-          //   } else {
-          //     final lastRange = mergedList.last;
-          //     if (range.fromTime - lastRange.toTime <= 2 * 3600) {
-          //       mergedList[mergedList.length - 1] = V2SleepTimeRange(
-          //         fromTime: lastRange.fromTime,
-          //         toTime: range.toTime > lastRange.toTime
-          //             ? range.toTime
-          //             : lastRange.toTime,
-          //       );
-          //     } else {
-          //       mergedList.add(range);
-          //     }
-          //   }
-          // }
-          // 2. 不合并睡眠段，直接使用排序后的列表
-          final mergedList = sortedList;
+          final mergedList = <V2SleepTimeRange>[];
+          for (final range in sortedList) {
+            if (mergedList.isEmpty) {
+              mergedList.add(range);
+            } else {
+              final lastRange = mergedList.last;
+              if (range.fromTime - lastRange.toTime <= 0.5 * 3600) {
+                mergedList[mergedList.length - 1] = V2SleepTimeRange(
+                  fromTime: lastRange.fromTime,
+                  toTime: range.toTime > lastRange.toTime
+                      ? range.toTime
+                      : lastRange.toTime,
+                );
+              } else {
+                mergedList.add(range);
+              }
+            }
+          }
+          // // 2. 不合并睡眠段，直接使用排序后的列表
+          // final mergedList = sortedList;
 
 
           // 3. 渲染合并后的睡眠区间 Positioned widgets
           // 3. 渲染合并后的睡眠区间 Positioned widgets
           for (final range in mergedList) {
           for (final range in mergedList) {