fix: improve maintenance and synchronize live conversations

backend/tests/api/test_agent_workflow.py

@@ -21,7 +21,6 @@ from app.models.user import User
 from app.models.agent import Agent, AgentType
 from app.models.role import Role
 from app.models.permission import Permission, role_permissions
-from app.models.organization import Organization
 from app.models.workflow import Workflow, WorkflowStatus
 from uuid import uuid4
 from app.api import agent as agent_router