refactor: 收口 V3 分层架构与插件兼容边界

app/sdk/services.py

@@ -1,6 +1,7 @@
 """插件可使用的宿主服务发现与运行时门面。"""
 
-from app.runtime.extensions.service_registry import ServiceBaseHelper, ServiceConfigHelper
+from app.application.service import ServiceBaseHelper
+from app.runtime.extensions.service_config import ServiceConfigHelper
 from app.runtime.state import SystemHelper
 from app.application.downloader import DownloaderHelper
 from app.application.rules import RuleHelper