Remove cluster column from parquet files

Fix project page URL, remove cluster column from schema

Add project page link to README

Update README: add arXiv link, cross-link to quito-corpus, update citation

Delete data/min

Delete data/hour

Add QuitoBench v20260315: hour + min test splits with dataset card

Add QuitoBench test splits (hour + min) with dataset card

Delete examples/datasets/train_test/open_min_data_test.parquet

Delete examples/datasets/train_test/open_hour_data_test.parquet

Upload examples/datasets/train_test/open_min_data_test.parquet with huggingface_hub

Upload examples/datasets/train_test/open_hour_data_test.parquet with huggingface_hub

initial commit