优化结构

internal/service/system/version_import_test.go

@@ -14,12 +14,8 @@ type versionImportRepo struct {
 	saveErr error
 }
 
-func (r *versionImportRepo) ImportVersionBundle(context.Context, *bizsystem.VersionBundle) error {
-	return nil
-}
-
-func (r *versionImportRepo) CreateVersion(context.Context, *bizsystem.Version) error {
-	return r.saveErr
+func (r *versionImportRepo) ImportVersionBundle(context.Context, *bizsystem.VersionBundle, *bizsystem.Version) error {
+	return &bizsystem.VersionStageError{Stage: bizsystem.VersionStageSave, Err: r.saveErr}
 }
 
 func TestImportRequestReturnsVersionAuditSaveFailure(t *testing.T) {