refactor(jassub): [PKG-JASSUB-04] migrate owned TypeScript and preserve public types

packages/artplayer-plugin-jassub/README.md

@@ -11,6 +11,10 @@ jassub plugin for ArtPlayer
 See [maintenance notes](ARCHITECTURE.md) for adapter/vendor boundaries, resource paths,
 historical declaration differences and the current validation scope.
 
+Existing imports keep their historical types. The optional
+[`artplayer-plugin-jassub/runtime` entry](types/README.md) provides accurate options,
+synchronous instance methods and subtitle query types using the same implementation.
+
 ## License
 
 MIT © Harvey Zhao