Before refactor

backend/app/main.py

@@ -14,6 +14,7 @@ from app.models.journal import JournalEntry
 from app.models.local_flight import LocalFlight
 from app.models.departure import Departure
 from app.models.arrival import Arrival
+from app.models.circuit import Circuit
 
 # Set up logging
 logging.basicConfig(level=logging.INFO)