refactor(erp): 调整 receivable 服务中的类型引用

- 移除了对 "erp/app/constant" 包的依赖
- 将 Ik3cloudStatus 字段的类型从 constant.Flag 更改为 Flag
- 简化了包导入结构，提高代码可维护性

erp/receivable.go

@@ -2,7 +2,6 @@ package erp
 
 import (
 	"context"
-	"erp/app/constant"
 	"time"
 
 	"git.kumo.work/shama/service/client"
@@ -68,7 +67,7 @@ type ReplyReceivableInfo struct {
 	CurrencyRate      decimal.Decimal         `json:"currencyRate"`
 	CurrencySymbol    string                  `json:"currencySymbol"`
 	CreatedStaffID    int64                   `json:"createdStaffID"`
-	Ik3cloudStatus    constant.Flag           `json:"ik3CloudStatus"`
+	Ik3cloudStatus    Flag                    `json:"ik3CloudStatus"`
 	CreatedAt         *time.Time              `json:"createdAt"`
 	UpdatedAt         *time.Time              `json:"updatedAt"`
 	Products          []ReceivableProductItem `json:"products"`