refactor(documents): rename document tree model

backend/internal/logic/dataset/handlers_test.go

@@ -90,7 +90,7 @@ func TestDatasetAPIConnectsSourcesItemsAndSyncTasks(t *testing.T) {
 		"projectId": project.Identity,
 	})
 	require.Equal(t, http.StatusCreated, deposited.Code)
-	var depositedDocument models.SaDocument
+	var depositedDocument models.SaDocumentTree
 	require.NoError(t, database.Where("project_id = ?", project.ID).First(&depositedDocument).Error)
 	require.Equal(t, item.Title+".md", depositedDocument.Name)
 	var depositedContent models.SaDocumentContent
@@ -241,7 +241,7 @@ func newDatasetTestDatabase(t *testing.T) *gorm.DB {
 		&models.SaDatasetSource{},
 		&models.SaDatasetItem{},
 		&models.SaProject{},
-		&models.SaDocument{},
+		&models.SaDocumentTree{},
 		&models.SaDocumentContent{},
 	))
 	return database