feat(approval): 添加审批撤销功能

- 在IWmsApprovalService中新增cancelApproval方法定义
- 在IWmsApprovalTaskService中新增deleteByApprovalId方法定义
- 在WmsApprovalController中新增cancelApproval接口
- 在WmsApprovalServiceImpl中实现撤销审批业务逻辑
- 在WmsApprovalTaskServiceImpl中实现按审批ID删除任务功能
- 添加撤销审批的权限验证和重复提交限制
- 实现审批状态校验和关联任务清理机制

klp-wms/src/main/java/com/klp/controller/WmsApprovalController.java

@@ -142,4 +142,18 @@ public class WmsApprovalController extends BaseController {
     public R<List<WmsApprovalTaskVo>> getTasks(@PathVariable Long approvalId) {
         return R.ok(iWmsApprovalTaskService.queryByApprovalId(approvalId));
     }
+
+    /**
+     * 撤销审批
+     *
+     * @param approvalId 审批ID
+     */
+    @Log(title = "撤销审批", businessType = BusinessType.UPDATE)
+    @RepeatSubmit()
+    @PostMapping("/cancel")
+    public R<Map<String, Object>> cancelApproval(
+        @NotNull(message = "审批ID不能为空")
+        @RequestParam Long approvalId) {
+        return R.ok(iWmsApprovalService.cancelApproval(approvalId));
+    }
 }