refactor: route chat and subtitle settings through runtime

app/modules/wechatclawbot/wechatclawbot.py

@@ -17,7 +17,9 @@ from Crypto.Cipher import AES
 from Crypto.Util.Padding import pad
 
 from app.runtime.cache import FileCache
-from app.runtime.config import settings
+from app.runtime.settings import RuntimeSettingsCompat
+
+settings = RuntimeSettingsCompat()
 from app.domain.context import Context, MediaInfo
 from app.domain.metainfo import MetaInfo
 from app.runtime.log import logger