feat(wms): 新增合同挂接钢卷统计功能

- 在IWmsCoilContractRelService接口中添加queryContractCoilStatistics方法
- 在WmsCoilContractRelController控制器中添加统计查询和导出接口
- 在WmsCoilContractRelMapper中添加selectContractCoilStatistics查询方法
- 实现合同挂接钢卷统计的SQL查询逻辑，支持多条件筛选
- 创建ContractCoilStatisticsBo查询对象和ContractCoilStatisticsVo视图对象
- 开发前端统计页面，包含搜索筛选、统计卡片、图表展示和数据表格
- 集成ECharts实现合同状态分布饼图和销售员挂接钢卷柱状图
- 实现统计数据的Excel导出功能
- 添加响应式设计适配移动端显示

klp-wms/src/main/java/com/klp/service/impl/WmsCoilContractRelServiceImpl.java

@@ -11,7 +11,9 @@ import com.klp.common.utils.StringUtils;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 import com.klp.domain.bo.WmsCoilContractRelBo;
+import com.klp.domain.bo.ContractCoilStatisticsBo;
 import com.klp.domain.vo.WmsCoilContractRelVo;
+import com.klp.domain.vo.ContractCoilStatisticsVo;
 import com.klp.domain.WmsCoilContractRel;
 import com.klp.domain.WmsMaterialCoil;
 import com.klp.mapper.WmsCoilContractRelMapper;
@@ -195,4 +197,12 @@ public class WmsCoilContractRelServiceImpl implements IWmsCoilContractRelService
         }
         return updated;
     }
+
+    /**
+     * 查询合同挂接钢卷统计
+     */
+    @Override
+    public List<ContractCoilStatisticsVo> queryContractCoilStatistics(ContractCoilStatisticsBo bo) {
+        return baseMapper.selectContractCoilStatistics(bo);
+    }
 }