fix: improve maintenance and synchronize live conversations

backend/tests/api/test_widget.py

@@ -17,13 +17,11 @@ limitations under the License.
 import pytest
 from unittest.mock import patch
 from fastapi.testclient import TestClient
-from sqlalchemy.orm import Session
 from app.database import Base, get_db
 from fastapi import FastAPI
 from app.models.widget import Widget
 from app.models.user import User
-from app.models.agent import Agent, AgentType
-from app.models.agent import AgentCustomization
+from app.models.agent import Agent
 from uuid import UUID, uuid4
 from app.api import widget as widget_router
 from app.core.auth import get_current_user