Release version 1.3.1: Updated backend models and endpoints

backend/app/main.py

@@ -21,6 +21,7 @@ from app.models.system import System
 from app.models.category import Category
 from app.models.user import User
 from app.models.ticket import Ticket
+from app.models.comment import TicketComment
 
 from app.core.logging import setup_logging
 from app.api.v1.router import api_router
@@ -198,4 +199,4 @@ if __name__ == "__main__":
         host="0.0.0.0",
         port=8000,
         reload=settings.ENVIRONMENT == "development"
-    )
+    )