fix base url setting

src/auracaster_webui/app.py

@@ -9,13 +9,14 @@ st.set_page_config(page_title="Airport Announcement System", page_icon="✈️")
 
 import time
 import requests
+import translator_client
 from translator_client.translator_client import (
     get_groups, get_available_languages, get_group_state,
     start_announcement, update_group, get_available_endpoints
 )
 from translator_models.translator_models import Endpoint, EndpointGroup, AnnouncementStates
 
-if "TRANSLATOR_API_BASE_URL" not in os.environ:
+if "TRANSLATOR_API_BASE_URL" in os.environ:
     translator_client.translator_client.API_BASE_URL = os.getenv("TRANSLATOR_API_BASE_URL")
 
 # Initialize session state for configuration