fix: align business V2 fields and page interactions

internal/service/business/account_test.go

@@ -6,8 +6,28 @@ import (
 	"kra/internal/biz/business"
 	"kra/internal/service/dto"
 	"testing"
+	"time"
 )
 
+func TestCreateMemberDefaultsOptionalHireDate(t *testing.T) {
+	f := &accountUsecaseFake{}
+	s := &AccountService{uc: f}
+	username, name := "newmember", "负责人"
+	for _, date := range []*string{nil, new(string)} {
+		_, err := s.Create(context.Background(), &dto.BusinessAccountRequest{Username: &username, RealName: &name, Password: "abc123", HireDate: date})
+		if err != nil {
+			t.Fatal(err)
+		}
+		if f.created.HireDate != time.Now().In(time.FixedZone("Asia/Shanghai", 8*3600)).Format("2006-01-02") {
+			t.Fatalf("default date: %s", f.created.HireDate)
+		}
+	}
+	invalid := "2026-02-30"
+	if _, err := s.Create(context.Background(), &dto.BusinessAccountRequest{Username: &username, RealName: &name, Password: "abc123", HireDate: &invalid}); err == nil {
+		t.Fatal("invalid explicit hire date accepted")
+	}
+}
+
 type accountUsecaseFake struct {
 	AccountUsecase
 	created *business.Account
@@ -68,14 +88,15 @@ func TestAccountQueryEmptyFiltersAndPageBounds(t *testing.T) {
 	}
 }
 
-func TestCreateBusinessRequiresHireDateAndValidPhone(t *testing.T) {
+func TestCreateBusinessDefaultsHireDateAndValidatesPhone(t *testing.T) {
 	f := &accountUsecaseFake{}
 	s := &AccountService{uc: f}
 	name, owner, phone, hire := "member", "负责人", "abc", "2026-11-01"
 	req := &dto.BusinessAccountRequest{Username: &name, RealName: &owner, Password: "test-password"}
-	if _, err := s.Create(context.Background(), req); err != business.ErrMemberInput || f.created != nil {
-		t.Fatal("missing hire date must not reach usecase")
+	if _, err := s.Create(context.Background(), req); err != nil || f.created.HireDate == "" {
+		t.Fatal("missing hire date should default to today")
 	}
+	f.created = nil
 	req.HireDate, req.Phone = &hire, &phone
 	if _, err := s.Create(context.Background(), req); err != business.ErrMemberInput || f.created != nil {
 		t.Fatal("invalid phone must not reach usecase")