Document live source-gate validation

CHANGELOG.md

@@ -1,5 +1,17 @@
 # Changelog
 
+## v0.3.0-preview (in progress)
+
+- Validated the source-policy gate on live local SpeakLeash shards: 12 reviewed
+  sources sampled and cleared blocking checks; four sources remain excluded and
+  two talk-page shards remain on hold pending a separate policy.
+- Ran a direct Europeana 200-record rebuild probe with per-record rights and
+  creator metadata: 197 Public Domain Mark and three CC-BY-SA-4.0 records
+  cleared blocking validation. This is candidate validation, not a release
+  inclusion.
+- Biblioteka Nauki direct probe currently returns HTTP 500 and is held out of
+  the preview until the upstream request is repaired and audited.
+
 ## v0.2.1 (2026-07-02)
 
 - Released a stable metadata-schema update: `id, text, source, added, created, token_count, license, author`.

README.md

@@ -23,11 +23,10 @@ family (Enevoldsen et al., [arXiv:2508.02271](https://arxiv.org/abs/2508.02271))
 > (tiktoken proxy; canonical Llama-3 count at release) · 12 sources
 > Updated: **2026-07-02**
 
-> **v0.3.0-preview in progress** · quality/diversity remix workflow, legal-style
-> downweighting, and filtered contemporary Polish web candidates. Biblioteka
-> Nauki and Europeana are prepared as source-ingestion PR targets with
-> per-document `license` and `author` metadata, but they are not part of this
-> stable parquet release yet.
+> **v0.3.0-preview validation release** · live source-gate validation for
+> SpeakLeash shards and direct Europeana candidate data, plus the quality/diversity
+> remix workflow. This is candidate-only metadata and audit work: it does not
+> replace the v0.2.1 stable parquets.
 
 ## Versions
 
@@ -35,7 +34,7 @@ family (Enevoldsen et al., [arXiv:2508.02271](https://arxiv.org/abs/2508.02271))
 |---|---|---:|---:|---|
 | `v0.2.1` | stable release | 2,491,773 | 6.28B | 12-source stable corpus with `license` and `author` metadata columns; adds `1000_novels`. |
 | `v0.2.0` | previous stable | 2,490,773 | 6.22B | Provenance-first corpus from 11 open/official sources. |
-| `v0.3.0-preview` | workflow + candidate data in progress | candidate-only | TBD | Biblioteka Nauki, Europeana, and HPLT/Common Corpus style expansion pending per-source QA, dedup, and legal review. |
+| `v0.3.0-preview` | validation release, candidate-only | candidate-only | TBD | Live source gates validated; Biblioteka Nauki, Europeana, and HPLT/Common Corpus expansion remain subject to per-source QA, dedup, and legal review. |
 
 ## What this dataset contributes
 The raw texts come from existing open corpora (redistributed via SpeakLeash and,
@@ -119,11 +118,22 @@ workflow therefore separates **source inclusion** from **training mix**:
 Current v0.3 source-ingestion status:
 
 - `biblioteka_nauki`: prepared in the source registry as a direct-upstream
-  rebuild target with per-document license and author metadata; not included in
-  v0.2.1 parquets yet.
+  rebuild target with per-document license and author metadata. A live probe
+  currently returns HTTP 500 and zero records, so it is **not included** in
+  v0.2.1 or the v0.3 preview candidate data.
 - `europeana`: prepared in the source registry as a direct-upstream rebuild
-  target with per-record rights statements and creator metadata; raw SpeakLeash
-  Europeana remains excluded.
+  target with per-record rights statements and creator metadata. A 200-record
+  live direct-rebuild audit found 197 Public Domain Mark records and three
+  CC-BY-SA-4.0 records; all passed the blocking schema, license, duplicate and
+  evaluation-overlap gates. It remains candidate-only until a complete rebuild,
+  date split, and legal review are complete. Raw SpeakLeash Europeana remains
+  excluded.
+- Local SpeakLeash shard audit: 12 reviewed source shards were sampled directly
+  from the live `.jsonl.zst` inputs and passed the blocking gates; four shards
+  are explicitly excluded (`open_subtitles_corpus`, raw Europeana,
+  `1000_novels_corpus_CLARIN-PL`, `project_gutenberg_pl_corpus`) and two talk
+  shards remain on hold pending a separate source policy. The audit mechanism is
+  aligned with [slayer-dsbench](https://github.com/slayerlabs/slayer-dsbench).
 - Europeana release policy: split conservatively at pre-1929 records for
   US-sensitive downstream reuse, and keep later/unknown records separately
   labeled or held until legal review.