Add CTA 1D Parquet loader and data requirements
- Add CTA1DLoaderParquet class for loading from Parquet files (parallel to CTA1DLoader)
- Add data_ops_research/ requirements for CTA Parquet dataset export
- Fix broken HFFACTOR_COLS import by defining inline
- Update exports in __init__.py files
New files:
- cta_1d/src/loader_parquet.py: Parquet-based loader
- cta_1d/config_parquet.yaml: Parquet-specific config
- data_ops_research/cta_1d/requirements.yaml: Data export requirements
- data_ops_research/cta_1d/README.md: Dataset documentation
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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