feat(voucher): 优化优惠券打印逻辑

- 添加景区配置管理器验证逻辑，确保只有指定的代理可以打印优惠券
-优化代码结构，提高可读性和可维护性

src/main/java/com/ycwl/basic/pricing/service/impl/VoucherPrintServiceImpl.java

@@ -82,6 +82,14 @@ public class VoucherPrintServiceImpl implements VoucherPrintService {
         // 验证faceId是否属于当前用户
         validateFaceOwnership(request.getFaceId(), currentUserId);
 
+        ScenicConfigManager config = scenicRepository.getScenicConfigManager(face.getScenicId());
+        Long brokerId = config.getLong("voucher_broker_id");
+        if (brokerId != null) {
+            if (!request.getBrokerId().equals(brokerId)) {
+                return null;
+            }
+        }
+        
         // 使用Redis分布式锁防止重复打印
         String lockKey = String.format(PRINT_LOCK_KEY, request.getFaceId(), request.getBrokerId(), request.getScenicId());
         String lockValue = UUID.randomUUID().toString();