修改积分池查询逻辑：子部门自动使用父部门的积分池

backend/src/main/java/com/designhub/service/TeamScorePoolService.java

@@ -26,12 +26,25 @@ public class TeamScorePoolService {
 
     /**
      * 根据部门ID获取积分池
+     * 如果当前部门没有积分池，向上查找父部门的积分池
      */
     public TeamScorePool getByDeptId(Long deptId) {
-        return teamScorePoolMapper.selectOne(
+        // 首先查找当前部门的积分池
+        TeamScorePool pool = teamScorePoolMapper.selectOne(
             new LambdaQueryWrapper<TeamScorePool>()
-                .eq(TeamScorePool::getDeptId, deptId)
+                .eq(TeamScorePool::getTeamId, deptId)
         );
+        
+        // 如果当前部门没有积分池，向上查找父部门
+        if (pool == null) {
+            Department department = departmentMapper.selectById(deptId);
+            if (department != null && department.getParentId() != null && department.getParentId() > 0) {
+                log.debug("部门{}没有积分池，查找父部门{}的积分池", deptId, department.getParentId());
+                return getByDeptId(department.getParentId()); // 递归查找父部门
+            }
+        }
+        
+        return pool;
     }
 
     /**