fix: improve maintenance and synchronize live conversations

backend/tests/repo/test_ai_configrepo.py

@@ -15,10 +15,9 @@ limitations under the License.
 """
 
 import pytest
-from app.models.ai_config import AIConfig, AIModelType
+from app.models.ai_config import AIModelType
 from app.repositories.ai_config import AIConfigRepository
 from app.core.security import decrypt_api_key
-from uuid import UUID
 from app.models.organization import Organization
 
 @pytest.fixture