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

backend/app/routers/geo.py

@@ -19,9 +19,8 @@ import aiosqlite
 from fastapi import APIRouter, Depends, HTTPException, Path, Request, status
 
 from app.dependencies import AuthDep, get_db
-from app.models.geo import GeoCacheStatsResponse, GeoDetail, IpLookupResponse
+from app.models.geo import GeoCacheStatsResponse, GeoDetail, GeoInfo, IpLookupResponse
 from app.services import geo_service, jail_service
-from app.services.geo_service import GeoInfo
 from app.utils.fail2ban_client import Fail2BanConnectionError
 
 router: APIRouter = APIRouter(prefix="/api/geo", tags=["Geo"])