EXPERIMENT_METADATA =================== Python object: ``phenotypic.schema._experimental_tags._experiment.EXPERIMENT_METADATA`` Recommended ``MetadataExperiment_*`` tags for experiment-level bookkeeping. These group results by experiment/project and carry free-form provenance (experiment id, project, dataset, protocol, notes). ``Dataset`` matches the CLI-emitted ``MetadataExperiment_Dataset`` column. Members render as ``MetadataExperiment_