fix: improve maintenance and synchronize live conversations

backend/tests/api/test_workflow.py

@@ -16,8 +16,6 @@ limitations under the License.
 
 import pytest
 import uuid
-from unittest.mock import MagicMock, patch
-from fastapi import HTTPException
 from fastapi.testclient import TestClient
 from sqlalchemy.orm import Session
 
@@ -28,8 +26,6 @@ from app.models.agent import Agent
 from app.models.organization import Organization
 from app.models.role import Role
 from app.models.permission import Permission
-from app.models.schemas.workflow import WorkflowCreate, WorkflowUpdate
-from app.services.workflow import WorkflowService
 from app.core.config import settings
 from app.core.auth import get_current_user, require_permissions
 from app.database import get_db