fix(trainingCourseRecord): 确保学习时长单调不下降，避免前端误传导致统计异常

src/main/java/com/hotwj/platform/securityManagement/trainingCourseRecord/service/impl/HotTrainingCourseRecordServiceImpl.java

@@ -186,6 +186,12 @@ public class HotTrainingCourseRecordServiceImpl implements IHotTrainingCourseRec
                     update.setProgressRate(before.getProgressRate());
                 }
             }
+            if (before != null && before.getLearnDurationMin() != null && update.getLearnDurationMin() != null) {
+                // 确保学习时长（秒）单调不下降，避免前端误传0导致统计为0
+                if (update.getLearnDurationMin() < before.getLearnDurationMin()) {
+                    update.setLearnDurationMin(before.getLearnDurationMin());
+                }
+            }
         }
         initHourPackageUsageFieldsForUpdate(update, before);
         validEntityBeforeSave(update);