refactor: complete Task 2/3 geo decouple + exceptions centralization; mark as done

backend/tests/test_tasks/test_geo_re_resolve.py

@@ -13,7 +13,7 @@ from unittest.mock import AsyncMock, MagicMock, patch
 
 import pytest
 
-from app.services.geo_service import GeoInfo
+from app.models.geo import GeoInfo
 from app.tasks.geo_re_resolve import _run_re_resolve