feat: Implement multi-source weather data collection with caching, rate limiting, and disk persistence.

src/data_collection/weather_sources.py

@@ -34,6 +34,11 @@ class WeatherDataCollector:
         "seoul": ["RKSI", "RKSS"],
         "hong kong": ["VHHH", "VMMC", "ZGSZ"],
         "taipei": ["RCSS", "RCTP"],
+        "chengdu": ["ZUUU", "ZUTF"],
+        "chongqing": ["ZUCK", "ZUPS"],
+        "shenzhen": ["ZGSZ", "ZGGG"],
+        "beijing": ["ZBAA", "ZBAD"],
+        "wuhan": ["ZHHH", "ZHES"],
         "shanghai": ["ZSPD", "ZSSS", "ZSNB", "ZSHC"],
         "singapore": ["WSSS", "WSAP", "WMKK"],
         "tokyo": ["RJTT", "RJAA", "RJAH", "RJTJ"],
@@ -1960,6 +1965,16 @@ class WeatherDataCollector:
             "taipei": "Taipei",
             "台北": "Taipei",
             "臺北": "Taipei",
+            "chengdu": "Chengdu",
+            "成都": "Chengdu",
+            "chongqing": "Chongqing",
+            "重庆": "Chongqing",
+            "shenzhen": "Shenzhen",
+            "深圳": "Shenzhen",
+            "beijing": "Beijing",
+            "北京": "Beijing",
+            "wuhan": "Wuhan",
+            "武汉": "Wuhan",
             "shanghai": "Shanghai",
             "上海": "Shanghai",
             "singapore": "Singapore",