I/O sinks

IoSinks registers named output adapters independently from the processing graph. Steps can publish selected values through a configured sink, while the runner and runtime service can export final ProcessingData and provenance.

Current sinks cover CSV, HDF5 processing results, in-memory buffers, optional Tiled output, and Plotly JSON live output. Some sinks support incremental or chunked lifecycle operations; others accept complete results only. Consult the I/O capability matrix before choosing an operational pattern.

AppendSink registers a sink from configuration. SinkProcessingData selects processing paths for output. CLI and server registrations are often preferable when the same pipeline should write to different destinations in different runs.

HDF exports can include the pipeline specification, YAML, trace events, and selected processing results. Treat output data and provenance as one reproducibility record.