feat(pricing): 添加优惠券管理功能

- 新增 CouponManagementController 控制器，实现优惠券配置和领取记录的管理
- 新增 ICouponManagementService 接口和 CouponManagementServiceImpl 实现类，提供优惠券管理服务
- 在 PricingConfigController 中添加获取所有优惠券配置和领取记录的接口
- 新增 BundleProductListTypeHandler 类，用于处理一口价商品列表的序列化和反序列化
- 更新 PriceCouponClaimRecordMapper 和 PriceCouponConfigMapper，添加管理端所需的查询接口

src/main/java/com/ycwl/basic/pricing/controller/PricingConfigController.java

@@ -4,9 +4,12 @@ import com.ycwl.basic.utils.ApiResponse;
 import com.ycwl.basic.pricing.entity.PriceProductConfig;
 import com.ycwl.basic.pricing.entity.PriceTierConfig;
 import com.ycwl.basic.pricing.entity.PriceBundleConfig;
+import com.ycwl.basic.pricing.entity.PriceCouponConfig;
+import com.ycwl.basic.pricing.entity.PriceCouponClaimRecord;
 import com.ycwl.basic.pricing.service.IProductConfigService;
 import com.ycwl.basic.pricing.service.IPriceBundleService;
 import com.ycwl.basic.pricing.service.IPricingManagementService;
+import com.ycwl.basic.pricing.service.ICouponManagementService;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.web.bind.annotation.*;
@@ -25,6 +28,7 @@ public class PricingConfigController {
     private final IProductConfigService productConfigService;
     private final IPriceBundleService bundleService;
     private final IPricingManagementService managementService;
+    private final ICouponManagementService couponManagementService;
     
     
     // ==================== 查询API ====================
@@ -273,4 +277,24 @@ public class PricingConfigController {
         List<PriceBundleConfig> configs = bundleService.getAllBundlesForAdmin();
         return ApiResponse.success(configs);
     }
+    
+    /**
+     * 管理端：获取所有优惠券配置（包含禁用的）
+     */
+    @GetMapping("/admin/coupons")
+    public ApiResponse<List<PriceCouponConfig>> getAllCouponConfigsForAdmin() {
+        log.info("管理端获取所有优惠券配置");
+        List<PriceCouponConfig> configs = couponManagementService.getAllCouponConfigs();
+        return ApiResponse.success(configs);
+    }
+    
+    /**
+     * 管理端：获取所有优惠券领取记录
+     */
+    @GetMapping("/admin/coupon-records")
+    public ApiResponse<List<PriceCouponClaimRecord>> getAllCouponClaimRecordsForAdmin() {
+        log.info("管理端获取所有优惠券领取记录");
+        List<PriceCouponClaimRecord> records = couponManagementService.getAllClaimRecords();
+        return ApiResponse.success(records);
+    }
 }