Merge bin-10+bin-9 into single european_hplt_v3_pl.parquet; drop -part-b9 (one-file-per-source convention)

Add source: european_hplt_v3_pl (HPLT v3.0 Polish, top WDS bins, CC0)

Release v0.3.1 Europeana preview shard (#4)

Document live source-gate validation (#3)

Credit source expansion contributor

Remove generated Python cache files

Update v0.2.1 HF card release date

Release v0.2.1 metadata schema update

Add source: 1000_novels (1000 Novels Corpus, CLARIN-PL, CC BY 4.0) (#1)

Update HF card with v0.3 preview status

Add launcher for parallel HPLT filtering

Shard and parallelize HPLT filtering

Add progress logging to HPLT filtering

Add European HPLT Polish web filtering workflow

Add v0.3 source license review and quality mix workflow

Add phrase frequency stats and HF card snippet for Polish DynaWord

v0.2.0 data: +wikinews/wikivoyage/wikibooks/wikiquote/eltec_pol parquet

Squash: collapse LFS history to reclaim private storage