1ab41b6740
- New fabric-bridge node: initiator mode reads local MXL flow and transfers via Fabrics (RDMA/TCP); target mode receives remote data and commits to local MXL flow writer - Add set_mxl_instance/get_mxl_instance to Node base class - CMake option DMF_BUILD_FABRICS=OFF by default (needs libfabric) - Target publishes target_info in status for out-of-band exchange - Initiator receives target_info via config parameter