A7: enable pytest-asyncio (26 skipped async tests now run); fix stale distance assertion in test_geo_service

backend/tests/test_geo_service.py

@@ -22,6 +22,7 @@ from services.geo_service import (
     build_search_zones,
     DIRECTIONS,
     SEARCH_DISTANCES,
+    _build_search_distances,
     CACHE_DIR
 )
 
@@ -350,7 +351,9 @@ class TestBuildSearchZones:
             zones = await build_search_zones(53.9, 27.5, {})
 
             distances_found = set(z.distance_km for z in zones)
-            expected_distances = set(d / 1000 for d in SEARCH_DISTANCES)
+            # build_search_zones derives distances from max_distance_km (default 3.0 km),
+            # not from the legacy SEARCH_DISTANCES constant.
+            expected_distances = set(d / 1000 for d in _build_search_distances(3.0))
             assert distances_found == expected_distances
 
     @pytest.mark.asyncio