feat(pricing): 实现首次打印自动发券功能

- 新增自动发券服务接口 IAutoCouponService- 实现自动发券逻辑，包括参数校验、优惠券配置查询和发券记录检查
- 在打印服务中集成自动发券调用，确保首次打印时触发发券- 添加异常处理，避免发券失败影响主流程
- 支持通过优惠券名称和商品类型匹配规则查找目标优惠券

src/main/java/com/ycwl/basic/service/printer/impl/PrinterServiceImpl.java

@@ -33,6 +33,7 @@ import com.ycwl.basic.pricing.dto.PriceCalculationRequest;
 import com.ycwl.basic.pricing.dto.PriceCalculationResult;
 import com.ycwl.basic.pricing.dto.ProductItem;
 import com.ycwl.basic.pricing.enums.ProductType;
+import com.ycwl.basic.pricing.service.IAutoCouponService;
 import com.ycwl.basic.pricing.service.IPriceCalculationService;
 import com.ycwl.basic.model.pc.printer.entity.MemberPrintEntity;
 import com.ycwl.basic.model.pc.printer.entity.PrintTaskEntity;
@@ -109,6 +110,8 @@ public class PrinterServiceImpl implements PrinterService {
     @Autowired
     private IPriceCalculationService priceCalculationService;
     @Autowired
+    private IAutoCouponService autoCouponService;
+    @Autowired
     private ScenicRepository scenicRepository;
     @Autowired
     private OrderRepository orderRepository;
@@ -586,6 +589,21 @@ public class PrinterServiceImpl implements PrinterService {
             throw new BaseException("没有可打印的照片");
         }
 
+        // 【新增】检测并自动发放首次打印优惠券
+        if (mobileCount > 0) {
+            try {
+                autoCouponService.autoGrantFirstPrintCoupon(
+                    memberId,
+                    faceId,
+                    scenicId,
+                    ProductType.PHOTO_PRINT_MU
+                );
+            } catch (Exception e) {
+                log.warn("自动发券失败，不影响下单流程: memberId={}, faceId={}, scenicId={}, error={}",
+                    memberId, faceId, scenicId, e.getMessage());
+            }
+        }
+
         OrderEntity order = new OrderEntity();
         Long orderId = SnowFlakeUtil.getLongId();
         redisTemplate.opsForValue().set("printer_size:"+orderId, printer.getPreferPaper(), 60, TimeUnit.SECONDS);