HF RL Explorer

Default HTTP transport should use JDK HttpClient instead of external OkHttp

Default HTTP transport should use JDK HttpClient instead of external OkHttp: a task in LegoFlow-SWE (Harbor dataset). Currently, calling HttpTransportFactory.getDefault() returns an OkHttpTransport instance, which forces the project to depend on the third‑party OkHttp library. To simplify…

The task

Currently, calling `HttpTransportFactory.getDefault()` returns an `OkHttpTransport` instance, which forces the project to depend on the third‑party OkHttp library. To simplify dependencies and leverage the JDK’s built‑in `java.net.http.HttpClient`, the default transport should be changed to a new `JdkHttpTransport`…

Part of Lego-X/LegoFlow-SWE.