test: enhance service test coverage and add audit tests

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

backend/app/services/super_test.go

@@ -159,12 +159,15 @@ func (s *SuperTestSuite) Test_CreateTenant() {
 			So(t.UserID, ShouldEqual, u.ID)
 			So(t.Status, ShouldEqual, consts.TenantStatusVerified)
 			So(t.ExpiredAt.After(startAt), ShouldBeTrue)
+			So(t.ExpiredAt.Before(startAt.AddDate(0, 0, 8)), ShouldBeTrue)
+			So(t.ExpiredAt.After(startAt.AddDate(0, 0, 6)), ShouldBeTrue)
 
 			tu, _ := models.TenantUserQuery.WithContext(ctx).
 				Where(models.TenantUserQuery.TenantID.Eq(t.ID), models.TenantUserQuery.UserID.Eq(u.ID)).
 				First()
 			So(tu, ShouldNotBeNil)
 			So(tu.Status, ShouldEqual, consts.UserStatusVerified)
+			So(tu.Role, ShouldResemble, types.Array[consts.TenantUserRole]{consts.TenantUserRoleTenantAdmin})
 		})
 	})
 }
@@ -1361,6 +1364,12 @@ func (s *SuperTestSuite) Test_PayoutAccountCreateUpdate() {
 			So(updated.ReviewedBy, ShouldEqual, int64(0))
 			So(updated.ReviewReason, ShouldEqual, "")
 		})
+
+		Convey("should get creator settings", func() {
+			res, err := Super.GetCreatorSettings(ctx, tenant.ID)
+			So(err, ShouldBeNil)
+			So(res.Name, ShouldEqual, "Payout Tenant 2")
+		})
 	})
 }