fix: improve maintenance and synchronize live conversations

backend/tests/api/test_help_center_api.py

@@ -26,9 +26,9 @@ from fastapi.testclient import TestClient
 
 import app.main  # noqa: F401 — ensures routers are registered on the FastAPI app
 from app.core.application import app
-from app.core.auth import get_current_user, require_permissions
+from app.core.auth import get_current_user
 from app.database import get_db
-from app.models.faq import FAQ, FAQStatus
+from app.models.faq import FAQ
 from app.repositories.faq import FAQRepository
 
 BASE = "/api/v1/help-center"