Land a Domo DataSet with no connector-backed warehouse table (API/webform/Excel-upload/sample data) into Snowflake so domo-to-sigma's build-dm.rb can resolve it. Use when discovery/dataset-map.json has one or more entries flagged _source: "domo-landed-data" (build-dm.rb's own sentinel for a DataSet it found no warehouse mapping for), or a cold run against Domo's own sample/demo content needs its DataSets landed first. This is the DATA track that runs BEFORE domo-to-sigma converts the model/dashboard logic. Not for connector-backed DataSets (those already resolve via stream-config auto-fill) and not a logic/Beast-Mode converter.