新增 AEROWEB (Météo-France) 和 NCM (沙特) 实时气象数据源

AEROWEB: 接入 aviation.meteo.fr，LFPB METAR 2 分钟内可获取，
实测温度替代 AROME 模式预报作为 Paris 电报推送数据源。
登录流程: PHPSESSID + MD5 密码 → ajax/login_valid.php，
Session 20 分钟自动续期，XML 解析提取 tempe/td/dd/ff/qnh。

NCM: 沙特气象局 Meteomatics API 代码框架，待凭证激活。
Jeddah settlement_source 从废弃的 wunderground 迁移至 ncm。

同时清理: 日志文件 trading_system.log → polyweather.log，
删除 2026-02-07 的 1.2MB 废弃交易引擎日志。

Constraint: AEROWEB 需 AEROWEB_USERNAME/AEROWEB_PASSWORD 环境变量
Constraint: NCM 需 NCM_API_USERNAME/NCM_API_PASSWORD 环境变量
Confidence: high
Tested: AEROWEB 登录→取数→解析端到端验证通过

src/data_collection/city_registry.py

@@ -71,9 +71,9 @@ CITY_REGISTRY = {
         "lat": 48.9694,
         "lon": 2.4414,
         "icao": "LFPB",
-        "settlement_source": "metar",
+        "settlement_source": "aeroweb",
         "settlement_station_code": "LFPB",
-        "settlement_station_label": "Paris-Le Bourget Airport METAR",
+        "settlement_station_label": "Paris Le Bourget (AEROWEB)",
         "settlement_url": "https://www.wunderground.com/history/daily/fr/bonneuil-en-france/LFPB",
         "tz_offset": 3600,
         "use_fahrenheit": False,
@@ -788,9 +788,9 @@ CITY_REGISTRY = {
         "lat": 21.6702,
         "lon": 39.1525,
         "icao": "OEJN",
-        "settlement_source": "wunderground",
+        "settlement_source": "ncm",
         "settlement_station_code": "OEJN",
-        "settlement_station_label": "Jeddah/King Abdulaziz International Airport Station",
+        "settlement_station_label": "Jeddah King Abdulaziz Intl (NCM)",
         "settlement_url": "https://www.wunderground.com/history/daily/sa/jeddah/OEJN",
         "tz_offset": 10800,
         "use_fahrenheit": False,