refactor: implement ScheduleStatusServiceImpl

Phase 2, Step 2.9: Extract status logic from MartialScheduleServiceImpl
- Implement updateParticipantCheckInStatus method (17 lines)
- Complete status management logic extraction

Related to Phase 2 refactoring plan

src/main/java/org/springblade/modules/martial/service/impl/ScheduleStatusServiceImpl.java

@@ -0,0 +1,37 @@
+package org.springblade.modules.martial.service.impl;
+
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springblade.modules.martial.mapper.MartialScheduleParticipantMapper;
+import org.springblade.modules.martial.pojo.entity.MartialScheduleParticipant;
+import org.springblade.modules.martial.service.IScheduleStatusService;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class ScheduleStatusServiceImpl implements IScheduleStatusService {
+
+    private final MartialScheduleParticipantMapper scheduleParticipantMapper;
+
+    @Override
+    @Transactional(rollbackFor = Exception.class)
+	public boolean updateParticipantCheckInStatus(Long participantId, String status) {
+		if (participantId == null || status == null) {
+			return false;
+		}
+		
+		MartialScheduleParticipant participant = scheduleParticipantMapper.selectById(participantId);
+		if (participant == null) {
+			log.warn("参赛者不存在, participantId: {}", participantId);
+			return false;
+		}
+		
+		participant.setCheckInStatus(status);
+		int result = scheduleParticipantMapper.updateById(participant);
+		
+		log.info("更新参赛者签到状态: participantId={}, status={}, result={}", participantId, status, result);
+		return result > 0;
+	}
+}