feat(data): add reviewed Global Voices Polish corpus

data/global_voices/NOTICE.md

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+# NOTICE — Global Voices source
+
+The exported article text is attributed to Global Voices and the credited
+original authors and translators under Creative Commons Attribution 3.0.
+
+Source: https://pl.globalvoices.org/
+License: https://creativecommons.org/licenses/by/3.0/
+
+Per-record contributor attribution is stored in the `author` column. The accompanying `global_voices.attribution.jsonl` sidecar additionally preserves each released article's title, canonical URL, license URL and modification notice. Twelve historical records had no machine-readable contributor field; full-text review recovered Didem Tali and Khalid Ibrahim for two of them. Ten records without an identifiable contributor use the explicitly organizational attribution `Global Voices`; this must not be interpreted as a known individual author.
+
+Binary media files are not included. Articles may nevertheless contain captions, URLs, social-media posts and quotations from third-party works; rights in those materials may remain with their respective authors. Article-level CC BY 3.0 is not asserted independently for photographs, videos, embeds or separately quoted works.

data/global_voices/global_voices.md

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+# global_voices
+
+Polish-language civic-media and public-interest journalism from [Global Voices](https://pl.globalvoices.org/), produced by its international community of writers and volunteer translators.
+
+## Dataset description
+
+- **Source (upstream):** https://pl.globalvoices.org/
+- **Domain:** civic media, news and public-interest journalism
+- **Language:** Polish (pl)
+- **License:** `CC-BY-3.0`
+- **Created (range):** 2008-11-04, 2023-05-24
+- **Added:** 2026-07-15
+
+Global Voices describes its Lingua translations as human-made work performed by a volunteer translator community. The dataset primarily represents edited, translated journalism rather than conversational Polish or text necessarily authored originally in Polish.
+
+## Statistics
+
+| documents | characters | tokens (`cl100k_base` proxy) |
+|---:|---:|---:|
+| 2,040 | 10,073,628 | 3,715,020 |
+
+The Parquet schema matches DynaWord:
+
+`id, text, source, added, created, token_count, license, author`
+
+Published files:
+
+- `global_voices.parquet` — cleaned article text and DynaWord metadata;
+- `global_voices.stats.json` — release statistics;
+- `global_voices.attribution.jsonl` — title, canonical article URL, contributor attribution, license URL and modification notice for every document;
+- `NOTICE.md` — licensing and attribution notice.
+
+## Provenance
+
+Articles were acquired directly from the Polish Global Voices website through its official publication interfaces, rather than from a third-party corpus. Each released ID is linked to the corresponding canonical article URL in `global_voices.attribution.jsonl`.
+
+The source release contained 2,044 records. Four records below the minimum quality and length requirements were excluded, leaving 2,040 documents. The final source contains no exact duplicate documents.
+
+## Cleaning
+
+The release received a reviewed cleaning pass. Redundant source-language passages were removed where the corresponding Polish translation was retained, together with extraction artifacts and obsolete interface text. Intentional quotations and source-language material required for meaning or documentary context were preserved.
+
+The cleaning process did not use machine translation or automatic speech transcription. It should not be interpreted as making every document strictly monolingual.
+
+## Licensing — traceable basis and attribution
+
+CC BY 3.0 was verified from the article-level license link published with each retained Global Voices article. Each released record carries `CC-BY-3.0` metadata. Contributor roles are preserved in the `author` column where available, distinguishing original authors from Polish translators.
+
+Because the fixed DynaWord schema does not contain article titles or URLs, the attribution sidecar maps every released `id` to its title, canonical URL, contributor attribution, license URL and modification notice. It contains one unique URL-bearing record for each of the 2,040 Parquet documents.
+
+Recommended attribution:
+
+> Global Voices; the original author(s) and Polish translator(s) listed in the attribution sidecar; canonical article URL; CC BY 3.0. Article text was extracted and cleaned; redundant source-language passages were removed where a Polish translation was retained.
+
+Binary photographs, videos and embedded media are not redistributed. Articles may contain quotations, captions or social-media text whose separate rights remain with their respective authors.
+
+## Limitations and recommended use
+
+- The dataset represents edited online journalism and human translation, not the full distribution of contemporary Polish.
+- Translationese and source-specific editorial conventions may be present.
+- Some intentional source-language quotations remain inside otherwise Polish articles.
+- Coverage ends in May 2023.
+- Cross-source and near-duplicate removal against other DynaWord sources remains part of the complete corpus build.
+
+Global Voices is best used as a complementary source of contemporary civic-media and journalistic Polish, rather than as a standalone representation of colloquial or natively authored Polish.

data/global_voices/global_voices.parquet

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+version https://git-lfs.github.com/spec/v1
+oid sha256:1ca02fdb6bad32b20757ddcd9b9f072056ff35b68c487143138cc7912b3a45c3
+size 5253559

data/global_voices/global_voices.stats.json

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+{
+  "read": 2044,
+  "kept": 2040,
+  "drop_short": 4,
+  "drop_lang": 0,
+  "drop_dup": 0,
+  "drop_ocr": 0,
+  "chars": 10073628,
+  "tokens": 3715020,
+  "licenses": {
+    "CC-BY-3.0": 2040
+  },
+  "authors_with_value": 2040,
+  "stats_recomputed_from_parquet": true
+}