fix: migrate geo GraphQL queries and frontend to camelCase

Geo backend was migrated to camelCase but frontend .graphql files and
component code still used snake_case, causing 400 errors on all geo API calls.

graphql/operations/public/geo/GetAutoRoute.graphql

@@ -1,6 +1,6 @@
 query GetAutoRoute($fromLat: Float!, $fromLon: Float!, $toLat: Float!, $toLon: Float!) {
-  auto_route(from_lat: $fromLat, from_lon: $fromLon, to_lat: $toLat, to_lon: $toLon) {
-    distance_km
+  autoRoute(fromLat: $fromLat, fromLon: $fromLon, toLat: $toLat, toLon: $toLon) {
+    distanceKm
     geometry
   }
 }