Enable fast METAR refresh for Lagos

src/data_collection/city_registry.py

@@ -769,6 +769,7 @@ CITY_REGISTRY = {
         "tz_offset": 3600,
         "use_fahrenheit": False,
         "is_major": True,
+        "fast_metar_refresh": True,
         "risk_level": "medium",
         "risk_emoji": "🟡",
         "airport_name": "穆尔塔拉·穆罕默德国际机场",

tests/test_country_networks.py

@@ -31,6 +31,7 @@ def test_turkey_metar_uses_fast_cache_ttl():
 
     assert source._metar_cache_ttl_for_city("ankara", "LTAC") == 60
     assert source._metar_cache_ttl_for_city("istanbul", "LTFM") == 60
+    assert source._metar_cache_ttl_for_city("lagos", "DNMM") == 60
     assert source._metar_cache_ttl_for_city("karachi", "OPKC") == 600