feat: implement METAR data collection service and dashboard infrastructure

src/data_collection/city_registry.py

@@ -149,21 +149,20 @@ CITY_REGISTRY = {
     },
     "taipei": {
         "name": "Taipei",
-        "lat": 25.0670,
-        "lon": 121.5525,
+        "lat": 25.0377,
+        "lon": 121.5149,
         "icao": "RCSS",
-        "settlement_source": "wunderground",
-        "settlement_station_code": "RCSS",
-        "settlement_station_label": "Taipei Songshan Airport Station",
-        "settlement_url": "https://www.wunderground.com/history/daily/tw/taipei/RCSS",
+        "settlement_source": "cwa",
+        "settlement_station_code": "466920",
+        "settlement_station_label": "中央气象署台北站",
         "tz_offset": 28800,
         "use_fahrenheit": False,
         "is_major": True,
         "risk_level": "low",
         "risk_emoji": "🟢",
-        "airport_name": "台北松山机场",
-        "distance_km": 4.1,
-        "warning": "市场现按 Wunderground 台北松山机场站整度°C口径结算；以历史页当日最终完成后的最高整度摄氏值为准。",
+        "airport_name": "中央气象署台北站",
+        "distance_km": 0.0,
+        "warning": "结算按交通部中央气象署台北站口径，不应混用松山机场 METAR 作为结算主源。",
     },
     "shanghai": {
         "name": "Shanghai",