Update README with unified format (v3.0)

Update README with unified format (v3.0)

Update README with unified format (v3.0)

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Remove old file: requirements.txt

Remove old file: stats.json

Remove old file: prefix_cleaning_summary.json

Remove old file: convert_deepscaler_to_verl.py

Remove old file: data/train-00000.parquet

Upload README.md with huggingface_hub

Upload data/train.parquet with huggingface_hub

Update dataset statistics after removing duplicate file

Delete data/train-00000-of-00001.parquet with huggingface_hub

Update dataset metadata

Apply intra-dataset deduplication

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Convert DeepScaleR-Preview-Dataset to VERL format