修复工作人员作业预检状态与提示

backend/api/internal/seed/mock.go

@@ -602,6 +602,15 @@ func seedAdditionalCoreScenarios(database *gorm.DB, passwordHash string, now tim
 			return err
 		}
 
+		// 为每组模拟工作人员补齐独立有效资质，保证预检数据与在岗状态一致。
+		credential := models.StaffCredential{
+			Entity: entity(sequence+21, common.StatusEnable), StaffAccountID: staff.ID,
+			CredentialType: "delivery", CredentialNo: "MOCK-CERT-" + suffix, ExpiredAt: &nextYear,
+		}
+		if err := put(database, &credential); err != nil {
+			return err
+		}
+
 		user := models.UserAccount{
 			Entity: entity(sequence+4, common.StatusEnable), Username: "mock_customer_" + suffix,
 			PasswordHash: passwordHash, Name: fmt.Sprintf("示例客户%d", scenario), Phone: "138" + phoneSuffix,