c627142135
When no --out is given, predictions are written to a UUID-named parquet (/ceph central store for ceph inputs, sibling directory otherwise) and a YAML reference file is created next to the checkpoint recording the output path, dataset, checkpoint, and timestamp. Adds pyyaml as a core dependency and unit tests for the two new helper functions. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>