fix(#574): 签到时 booked_num 未累加

根因：updatePoolStatsOnCheckIn 只做 locked_num-1，
没有同时做 booked_num+1，导致号源池已约数不准确。

修复：签到时原子递增 booked_num

openhis-server-new/openhis-domain/src/main/java/com/openhis/appointmentmanage/mapper/SchedulePoolMapper.java

@@ -42,7 +42,7 @@ public interface SchedulePoolMapper extends BaseMapper<SchedulePool> {
                          @Param("lockedStatus") Integer lockedStatus);
 
     /**
-     * 签到时更新号源池统计：锁定数-1（签到后状态变为CHECKED_IN=3，由refreshPoolStats统一统计）
+     * 签到时更新号源池统计：锁定数-1，已约数+1
      *
      * @param poolId 号源池ID
      * @return 结果
@@ -50,6 +50,7 @@ public interface SchedulePoolMapper extends BaseMapper<SchedulePool> {
     @Update("""
             UPDATE adm_schedule_pool
             SET locked_num = locked_num - 1,
+                booked_num = booked_num + 1,
                 update_time = NOW()
             WHERE id = #{poolId}
               AND locked_num > 0