接入香港天文台 HKO + 流浮山 LFS 1分钟实时温度

HKO 公共天气 API 免费无注册，提供 1 分钟温度 CSV。
两个站点加入高频推送，与首尔/釜山同级。

Station: HK Observatory (HKO) 27.0°C, Lau Fau Shan (LFS) 25.9°C
Interval: 60s

Tested: pytest 176 passed, HKO API 实测通过

src/bot/runtime_coordinator.py

@@ -190,7 +190,7 @@ class StartupCoordinator:
         details = {
             "mode": "airport-periodic",
             "interval_sec": interval,
-            "cities": ["seoul", "busan", "tokyo", "ankara", "helsinki", "amsterdam", "istanbul", "paris"],
+            "cities": ["seoul", "busan", "tokyo", "ankara", "helsinki", "amsterdam", "istanbul", "paris", "hong kong", "lau fau shan"],
             "chat_targets": len(chat_ids),
             "window": "DEB proximity ≤3°C",
         }