feat(pricing): 实现优惠券打印功能

- 新增 AppVoucherController 控制器处理打印请求
- 实现 VoucherPrintService 接口和 VoucherPrintServiceImpl 实现类
- 添加 VoucherPrintReq 请求对象和 VoucherPrintResp 响应对象
- 创建 VoucherPrintRecord 实体和对应的 Mapper
- 更新 PriceVoucherCodeMapper 接口，添加随机获取未打印券码的方法
- 实现分布式锁机制防止重复打印- 生成流水号并记录打印状态

src/main/java/com/ycwl/basic/controller/mobile/AppVoucherController.java

@@ -0,0 +1,40 @@
+package com.ycwl.basic.controller.mobile;
+
+import com.ycwl.basic.pricing.dto.req.VoucherPrintReq;
+import com.ycwl.basic.pricing.dto.resp.VoucherPrintResp;
+import com.ycwl.basic.pricing.service.VoucherPrintService;
+import com.ycwl.basic.utils.ApiResponse;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+
+@Slf4j
+@RestController
+@RequestMapping("/api/mobile/voucher/v1")
+public class AppVoucherController {
+    
+    @Autowired
+    private VoucherPrintService voucherPrintService;
+    
+    /**
+     * 打印小票
+     * @param request 打印请求
+     * @return 打印结果
+     */
+    @PostMapping("/print")
+    public ApiResponse<VoucherPrintResp> printVoucherTicket(@RequestBody VoucherPrintReq request) {
+        log.info("收到打印小票请求: faceId={}, brokerId={}, scenicId={}", 
+                 request.getFaceId(), request.getBrokerId(), request.getScenicId());
+        
+        VoucherPrintResp response = voucherPrintService.printVoucherTicket(request);
+        
+        log.info("打印小票完成: code={}, voucherCode={}, status={}", 
+                 response.getCode(), response.getVoucherCode(), response.getPrintStatus());
+        
+        return ApiResponse.success(response);
+    }
+}