wikivoyage: label each page CC BY-SA 3.0 or 4.0 by its last revision (v0.2.6, v2#57)

artifacts/source_findings.md

@@ -2068,3 +2068,71 @@ name; kept) and `wikibooks_27071` (1,287 tokens, original licence not stated; ke
 the 25 released pages that the "Od lamera do hakera" hub links in other books were not
 traced; E1 (v2#56); the 2 boundary documents; the 17 own-text and upstream GFDL documents;
 the markup residue.
+
+## wikivoyage — Polish Wikivoyage (rebuild from the official dump, 3.0/4.0 labels)
+
+**Investigated** — 2026-10-06 (October 2026 rights audit, `artifacts/rights_audit_2026-10/reports/wikis_ugc.md`,
+`reports/citations.md` L17-26; slayerlabs/polish-dynaword-v2#57).
+
+**Verdict** — `kept`, relabelled; rebuilt from the official dump so the label follows the
+page's last revision. Documents, characters and tokens are unchanged from v0.2.5
+(13,645 / 45,184,300 / 17,128,200); the text multiset is identical. Labels per record:
+`CC-BY-SA-3.0` 9,041 documents (4,233,610 tokens, 24.7%), `CC-BY-SA-4.0` 4,604 (12,894,590,
+75.3%); v0.2.5 labelled every row 3.0. Row ids are now `wikivoyage_<page id>`; `author` is
+the page URL and `created` the last-revision date (v0.2.5: empty `author`, and the same range
+string "2012-01-01, 2025-12-31" as `created` on every row). The parquet `added` column is
+2026-07-19 (v0.2.5: 2026-06-15).
+
+**Enumeration** — `plwikivoyage-20260601-pages-articles.xml.bz2` (sha1 `1a790d37…` matched to
+the dump's `sha1sums.txt`), parsed by `src/fetch_wikimedia.py`: 15,468 pages → 14,321 in
+namespace 0 → 630 redirects, 36 pages under 200 characters and 1 exact duplicate skipped →
+13,654 written → 9 non-Polish dropped by `build_dynaword.py` → 13,645. Text conversion is the
+v0.2.5 one (plain `strip_code`): `<ref>` bodies, `Kategoria:` links and `thumb|` file options
+stay in the text; nothing was changed in this PR. One sidecar line per row
+(`wikivoyage.attribution.jsonl`).
+
+**License evidence** — verified, read 2026-10-06: Wikimedia Terms of Use oldid 554823 (CC BY-SA
+4.0 and GFDL, in effect June 7, 2023; sha256 `c96ef93b…`), oldid 98524 (CC BY-SA 3.0, June 16,
+2014), the 3.0 and 4.0 legal code, pl.wikivoyage `rightsinfo` (BY-SA 4.0). Inferred: a page
+edited after the switch may carry earlier 3.0 text under 4.0 (3.0 §4(b)(ii)). The cutoff is
+2023-06-07 00:00 UTC, not the audit's "06-08 if time of day unknown": 06-08 would put that
+day's 4.0 edits under 3.0, which 4.0 §3(b)(1) does not allow; 6 documents were last edited on
+2023-06-07 and may carry 3.0 text under a 4.0 label. The footer switch date was not checked.
+The answer to E1 (v2#56) is still pending. GFDL era (last edit before 2009-06-15): 0
+documents. Evidence in `data/wikivoyage/wikivoyage.license-evidence.json`.
+
+**Blockers** — none to merge. Open: E1; the 6 boundary documents; copyright pastes (travel
+text copied from guidebooks and tourist sites was not sampled for Wikivoyage); the markup
+residue above.
+
+## wikivoyage — two pages withheld (update to the section above)
+
+**Investigated** — 2026-10-06 (copyright sample of the follow-up, then the maintainer's
+decision; slayerlabs/polish-dynaword-v2#57).
+
+**Verdict** — `kept`, two pages withheld: `wikivoyage_1219` (Barcelona/Sagrada Família) and
+`wikivoyage_910` (Królewiec). Maintainer approval 2026-10-06, relayed by the coordinator. The
+numbers in the section above (13,645 documents, 45,184,300 characters, 17,128,200 tokens;
+3.0: 9,041 / 4,233,610 tokens; 4.0: 4,604 / 12,894,590) are the v0.2.5 and pre-drop values;
+the release now holds 13,643 documents, 45,176,480 characters and 17,125,240 tokens (3.0:
+9,040 / 4,232,587; 4.0: 4,603 / 12,892,653). Withheld: 1219 is 3.0, 1,023 tokens, 2,771
+characters; 910 is 4.0, 1,937 tokens, 5,049 characters.
+
+**Reasons** — 1219: edited from barcelona.przewodnik-turystyczny.pl (the page's own
+bibliography names it); 432 of 2,782 characters shared verbatim (Earwig 0.23), a Wayback
+capture of 2006-06-16 already holds the passages, the wiki page was created 2009-06-04. 910:
+2,021 of 5,006 characters shared with kaliningraddotblog.wordpress.com/2018/05/07/krolewiec-konigsberg/
+(Earwig 0.78); the blog post is dated 2018-05-07, the text was added to the wiki on
+2021-02-23 (revision 108903).
+
+**Mechanism** — the ids and reasons live in `DROPPED_PAGES["wikivoyage"]` in `src/rights.py`;
+`fetch_wikimedia.py prepare` skips them and fails if one is not reached. Funnel: 15,468 pages
+→ 14,321 in namespace 0 → 630 redirects, 36 short pages, 1 exact duplicate and the 2 withheld
+pages skipped → 13,652 written → 9 non-Polish dropped → 13,643. Diff against the previous
+parquet: only the two ids removed, every other row identical; the 6 documents of the boundary
+day and the 0 GFDL-era documents are unchanged.
+
+**Blockers** — none. Open: the copyright sample read 80 of the 13,645 pages (40 per label),
+so 13,565 were not checked; two further pages stay in the release with the source's direction
+unresolved (`wikivoyage_2477`, `wikivoyage_989`); E1 (v2#56); the 6 boundary documents; the
+markup residue.

data/wikivoyage/wikivoyage.attribution.jsonl

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1eab71549b98104753eca2e7ba8ea518b7bd7740a366bbb10e7587f451e4f75e
+size 2859349

data/wikivoyage/wikivoyage.build.json

@@ -0,0 +1,69 @@
+{
+  "attribution_rows": 13643,
+  "attribution_sha256": "1eab71549b98104753eca2e7ba8ea518b7bd7740a366bbb10e7587f451e4f75e",
+  "cutoff": "2023-06-07T00:00:00+00:00",
+  "discovered_at": "2026-10-06T00:00:17.595298+00:00",
+  "dump_base": "https://dumps.wikimedia.org/plwikivoyage/20260601",
+  "dump_date": "20260601",
+  "file": {
+    "name": "plwikivoyage-20260601-pages-articles.xml.bz2",
+    "sha1": "1a790d37f5a05acd42a57023d28de2af36b13bd2",
+    "size": 20269251,
+    "url": "https://dumps.wikimedia.org/plwikivoyage/20260601/plwikivoyage-20260601-pages-articles.xml.bz2"
+  },
+  "labels": {
+    "after": "CC-BY-SA-4.0",
+    "before": "CC-BY-SA-3.0"
+  },
+  "prepare": {
+    "counts": {
+      "CC-BY-SA-3.0": 9048,
+      "CC-BY-SA-4.0": 4604,
+      "dropped_page": 2,
+      "exact_duplicate": 1,
+      "ns0": 14321,
+      "ns0_redirect": 630,
+      "ns0_short": 36,
+      "pages": 15468,
+      "written": 13652
+    },
+    "dropped_pages": [
+      {
+        "pageid": "910",
+        "reason": "Królewiec: 2,021 of 5,006 characters shared with kaliningraddotblog.wordpress.com/2018/05/07/krolewiec-konigsberg/ (Earwig 0.78); the blog post is dated 2018-05-07, the text was added to the wiki on 2021-02-23 (revision 108903)",
+        "title": "Królewiec"
+      },
+      {
+        "pageid": "1219",
+        "reason": "Barcelona/Sagrada Família: edited from barcelona.przewodnik-turystyczny.pl (the page's own bibliography names it); 432 of 2,782 characters shared verbatim (Earwig 0.23), a Wayback capture of 2006-06-16 already holds the passages, the wiki page was created 2009-06-04",
+        "title": "Barcelona/Sagrada Família"
+      }
+    ],
+    "exact_duplicate_pageids": [
+      "12746"
+    ]
+  },
+  "rightsinfo": {
+    "text": "Creative Commons Attribution-Share Alike 4.0",
+    "url": "https://creativecommons.org/licenses/by-sa/4.0/deed.pl",
+    "url_queried": "https://pl.wikivoyage.org/w/api.php?action=query&meta=siteinfo&siprop=rightsinfo"
+  },
+  "sha1sums_url": "https://dumps.wikimedia.org/plwikivoyage/20260601/plwikivoyage-20260601-sha1sums.txt",
+  "switch": null,
+  "terms": [
+    {
+      "effective": "These Terms of Use went into effect on June 7, 2023",
+      "sha256": "c96ef93b439ff9b8242dc3233f41ede57c0984ef9153fafa51aa5f8cf0678832",
+      "statement": "Creative Commons Attribution-ShareAlike 4.0 International License",
+      "title": "Wikimedia Terms of Use in force since 7 June 2023 (CC BY-SA 4.0)",
+      "url": "https://foundation.wikimedia.org/w/index.php?title=Policy:Terms_of_Use&oldid=554823&action=raw"
+    },
+    {
+      "effective": "These Terms of Use went into effect on June 16, 2014",
+      "sha256": "46617e3576a507b8f83a0cf7b28b60e43817ad93cc5d747a558b503e7d1cc6de",
+      "statement": "Creative Commons Attribution-ShareAlike 3.0 Unported License",
+      "title": "Wikimedia Terms of Use of 2014-2023 (CC BY-SA 3.0)",
+      "url": "https://foundation.wikimedia.org/w/index.php?title=Policy:Terms_of_Use&oldid=98524&action=raw"
+    }
+  ]
+}

data/wikivoyage/wikivoyage.license-evidence.json

@@ -0,0 +1,77 @@
+{
+  "checked_at": "2026-10-06",
+  "cutoff": {
+    "after": "CC-BY-SA-4.0",
+    "at": "2023-06-07T00:00:00+00:00",
+    "before": "CC-BY-SA-3.0",
+    "boundary_day": {
+      "day": "2023-06-07",
+      "docs_last_edited_that_day": 6
+    }
+  },
+  "legal": [
+    {
+      "section": "4(b)(ii)",
+      "sha256": "c33d7ebdbcc5c8db073e69a794b2ac44805f5d7d9edcfb8b5181a71869a9b7d5",
+      "statement": "a later version of this License with the same License Elements as this License",
+      "url": "https://creativecommons.org/licenses/by-sa/3.0/legalcode"
+    },
+    {
+      "section": "3(b)(1)",
+      "sha256": "47c0a954c88d793bdefe92fb007ae3c038fb3807f1a27083433d01aa7542c0d8",
+      "statement": "this version or later, or a BY-SA Compatible License",
+      "url": "https://creativecommons.org/licenses/by-sa/4.0/legalcode"
+    }
+  ],
+  "license": "CC-BY-SA-3.0 or CC-BY-SA-4.0 per record, by the page's last revision",
+  "release_scope": {
+    "created_range": [
+      "2013-04-21",
+      "2026-06-01"
+    ],
+    "labels": {
+      "CC-BY-SA-3.0": 9040,
+      "CC-BY-SA-4.0": 4603
+    },
+    "last_edited_before_era_end": {
+      "date": "2009-06-15",
+      "docs": 0,
+      "tokens": 0
+    },
+    "tokens": {
+      "CC-BY-SA-3.0": 4232587,
+      "CC-BY-SA-4.0": 12892653
+    }
+  },
+  "review_scope": "licence of contributors' text on pl.wikivoyage.org and its version per page; not independent legal advice",
+  "site_licence": {
+    "observed_at": "2026-10-06T00:00:17.595298+00:00",
+    "rightsinfo": {
+      "text": "Creative Commons Attribution-Share Alike 4.0",
+      "url": "https://creativecommons.org/licenses/by-sa/4.0/deed.pl",
+      "url_queried": "https://pl.wikivoyage.org/w/api.php?action=query&meta=siteinfo&siprop=rightsinfo"
+    }
+  },
+  "spdx": [
+    "https://spdx.org/licenses/CC-BY-SA-3.0.html",
+    "https://spdx.org/licenses/CC-BY-SA-4.0.html"
+  ],
+  "status": "documented-open-cc-by-sa",
+  "switch": null,
+  "terms": [
+    {
+      "effective": "These Terms of Use went into effect on June 7, 2023",
+      "sha256": "c96ef93b439ff9b8242dc3233f41ede57c0984ef9153fafa51aa5f8cf0678832",
+      "statement": "Creative Commons Attribution-ShareAlike 4.0 International License",
+      "title": "Wikimedia Terms of Use in force since 7 June 2023 (CC BY-SA 4.0)",
+      "url": "https://foundation.wikimedia.org/w/index.php?title=Policy:Terms_of_Use&oldid=554823&action=raw"
+    },
+    {
+      "effective": "These Terms of Use went into effect on June 16, 2014",
+      "sha256": "46617e3576a507b8f83a0cf7b28b60e43817ad93cc5d747a558b503e7d1cc6de",
+      "statement": "Creative Commons Attribution-ShareAlike 3.0 Unported License",
+      "title": "Wikimedia Terms of Use of 2014-2023 (CC BY-SA 3.0)",
+      "url": "https://foundation.wikimedia.org/w/index.php?title=Policy:Terms_of_Use&oldid=98524&action=raw"
+    }
+  ]
+}

data/wikivoyage/wikivoyage.md

@@ -1,43 +1,97 @@
 # wikivoyage
 
-Polish Wikivoyage (travel guides)
+Polish Wikivoyage
 
 ## Dataset description
-- **Source (upstream):** https://pl.wikivoyage.org/
+- **Source (upstream):** https://dumps.wikimedia.org/plwikivoyage/20260601/
 - **Domain:** travel
 - **Language:** Polish (pl)
-- **License:** `CC-BY-SA-3.0`
-- **Created (range):** 2012-01-01, 2025-12-31
-- **Added:** 2026-07-02
+- **License:** `CC-BY-SA-3.0` or `CC-BY-SA-4.0` per record (by last-revision date)
+- **Created (range):** 2013-04-21, 2026-06-01 (date of the page's last revision in the dump)
+- **Added:** 2026-07-02; rebuilt 2026-10-06 (UTC) from the official Wikimedia dump
 
 ## Licensing — traceable basis
-Wikivoyage content is released under CC-BY-SA 3.0; attribution + share-alike preserved.
+Contributors' text on pl.wikivoyage.org is licensed CC BY-SA: [Wikimedia Terms of Use in force since 7 June 2023 (CC BY-SA 4.0)](https://foundation.wikimedia.org/w/index.php?title=Policy:Terms_of_Use&oldid=554823&action=raw); [Wikimedia Terms of Use of 2014-2023 (CC BY-SA 3.0)](https://foundation.wikimedia.org/w/index.php?title=Policy:Terms_of_Use&oldid=98524&action=raw) (read 2026-10-06 UTC). The site licence
+(`rightsinfo`) reads "Creative Commons Attribution-Share Alike 4.0". Each row is labelled by its page's last revision in the dump:
+
+| last revision (UTC) | `license` | documents | tokens | share of tokens |
+|---|---|---:|---:|---:|
+| before 2023-06-07 | `CC-BY-SA-3.0` | 9,040 | 4,232,587 | 24.7% |
+| 2023-06-07 or later | `CC-BY-SA-4.0` | 4,603 | 12,892,653 | 75.3% |
+
+A page last edited on or after the cutoff can still hold 3.0 text from earlier edits;
+[CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/legalcode) §4(b)(ii) lets such an adaptation be licensed under "a later
+version of this License with the same License Elements", so it is labelled 4.0. The Terms
+of Use give the day of the switch, not the time. The cutoff is midnight UTC, so the
+6 pages last edited on 2023-06-07 itself are labelled 4.0. If the switch came later
+that day, those last edited before it are 3.0 text under a 4.0 label; a 2023-06-08 cutoff
+(the citation pass's fallback) would instead put that day's 4.0 edits under a 3.0 label,
+which [4.0](https://creativecommons.org/licenses/by-sa/4.0/legalcode) §3(b)(1) ("this version or later") does not allow. Neither choice is
+exact without the time of the switch. The rule is `license_for_revision` in `src/rights.py`,
+tested at the cutoff second, across time zones, and on a missing timestamp, which stops the
+build. v0.2.0-v0.2.5 labelled every row `CC-BY-SA-3.0`.
+
+0 documents (0 tokens, 0.0%) were last edited before 2009-06-15, when the Wikimedia sites
+began dual licensing under CC BY-SA 3.0 and the GFDL. Text first contributed before the 2009 move was
+under the GFDL only. They are labelled `CC-BY-SA-3.0`, so only the CC BY-SA grant is relied on; the count is recorded, not acted on.
+
+Evidence: `wikivoyage.license-evidence.json`.
+
+## Attribution
+Each row's `author` is `Wikivoyage contributors, <page URL>`, e.g.
+`Wikivoyage contributors, https://pl.wikivoyage.org/wiki/Azja`. The page history names the contributors; the Terms of Use (section 7b) accept a hyperlink or URL to the page as attribution.
+`wikivoyage.attribution.jsonl` has one line per row: `id`, `pageid`, `revid` (the revision
+in the dump), `title`, `url`, `last_revision_at`, `license`. The row `id` is
+`wikivoyage_<page id>` and `created` is the date of `last_revision_at`.
+
+The text is modified: wiki markup is converted to plain text (see Provenance).
 
 ## Provenance
-Fetched directly from the official Wikimedia dump (plwikivoyage-latest-pages-articles) by src/fetch_wikimedia.py; mainspace only, wikitext stripped via mwparserfromhell.
+Parsed from the official Wikimedia dump `plwikivoyage-20260601-pages-articles` by
+`src/fetch_wikimedia.py`; the file (20,269,251 bytes, sha1 `1a790d37f5a05acd42a57023d28de2af36b13bd2`) was matched against the
+dump's `dumpstatus.json` and `sha1sums.txt` (`wikivoyage.build.json`). v0.2.0-v0.2.5 used the same dump
+date; the text set is the same except for the withheld pages (the rebuild adds the last-revision time).
+
+Articles (namespace 0) only. Redirects, empty pages and pages shorter than 200 characters are skipped.
+Wikitext is converted with mwparserfromhell `strip_code(normalize=True, collapse=True)`, as in v0.2.5.
+Templates and comments are dropped. `<ref>` bodies, category links (`Kategoria:...`) and file-link
+options (`thumb|...`) are not removed and stay in the text; the wikipedia fetcher's `strip_article`
+removes them, this one does not, because that would change the text set. Of two pages with the same
+text (sha1 of the stripped text), the lower page id is kept.
+
+15,468 pages scanned → 14,321 in namespace 0 → 630 redirects, 0 empty pages, 0 parser failures, 36 shorter than 200 characters skipped, 1 exact duplicates dropped, 2 pages withheld by the rights review (`DROPPED_PAGES` in `src/rights.py`; ids, titles and reasons in `wikivoyage.build.json`) → 13,652 read by the build → 13,643 released.
 
 ## Statistics
 | documents | characters | tokens (tiktoken proxy) |
 |---:|---:|---:|
-| 13,645 | 45,184,300 | 17,128,200 |
+| 13,643 | 45,176,480 | 17,125,240 |
 
+v0.2.5 had 13,645 documents, 45,184,300 characters and 17,128,200 tokens; the difference is the 2 pages withheld by the rights review.
 
 ## Per-document license metadata
 | license | documents |
 |---|---:|
-| `CC-BY-SA-3.0` | 13,645 |
+| `CC-BY-SA-3.0` | 9,040 |
+| `CC-BY-SA-4.0` | 4,603 |
 
-Author metadata present for **0** documents. Empty values mean the upstream record did not expose a machine-readable author field.
-
-Statistics were recomputed directly from the released parquet file.
+Author metadata present for **13,643** documents.
 
 ## Filters applied (build_dynaword.py)
-Minimal, per Dynaword guidelines (heavy filtering left to downstream use):
-- drop documents < 200 chars: **0**
-- drop non-Polish (diacritic ratio): **0**
+- drop documents < 200 chars: **0** (the fetcher already dropped 36)
+- drop non-Polish (diacritic ratio): **9**
 - exact cross-source dedup (sha1): **0**
 - OCR alpha-ratio < 0.70 (OCR sources only): **0**
-- read 13,645 → kept 13,645
+- read 13,652 → kept 13,643
 
 Token counts are a fast tiktoken (cl100k) proxy (~1% off Llama-3); the canonical
 Llama-3 count is computed at release.
+
+## Not checked
+- pastes from copyrighted sources (no sample was run)
+- the 3.0 → 4.0 label of pages edited after the cutoff (a reading of 3.0 §4(b)(ii), not a lawyer's opinion;
+  the lawyer's answer to E1, the wiki 3.0/4.0 labelling, is still pending), and the time of day of the switch
+- text imported from elsewhere under another licence or with extra attribution requirements
+- text first contributed under GFDL before the 2009 move to CC BY-SA, and GFDL dual
+  licensing; only the CC BY-SA grant is relied on
+- quotations inside articles (Art. 29 of the Polish copyright act)
+- personal data (the NERGAL scrub runs before release)

data/wikivoyage/wikivoyage.parquet

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:4a53b4ad650f6efa87c06123bc1d9a2d64c4dc1dd62412a5238a844933871ec0
-size 19768042
+oid sha256:436e7a4b6ab0cb3e9b0cb8d133a93c8033f756fcff459653f4a26ef3881fe6d3
+size 19965350

data/wikivoyage/wikivoyage.stats.json

@@ -1,16 +1,17 @@
 {
-  "read": 13645,
-  "kept": 13645,
+  "read": 13652,
+  "kept": 13643,
   "drop_short": 0,
-  "drop_lang": 0,
+  "drop_lang": 9,
   "drop_dup": 0,
   "drop_ocr": 0,
-  "chars": 45184300,
-  "tokens": 17128200,
+  "chars": 45176480,
+  "tokens": 17125240,
   "licenses": {
-    "CC-BY-SA-3.0": 13645
+    "CC-BY-SA-3.0": 9040,
+    "CC-BY-SA-4.0": 4603
   },
-  "authors_with_value": 0,
-  "license": "CC-BY-SA-3.0",
-  "stats_recomputed_from_parquet": true
-}
+  "authors_with_value": 13643,
+  "secs": 2.5,
+  "license": "CC BY-SA (3.0 or 4.0 per record, by last-revision date)"
+}

src/rights.py

@@ -81,6 +81,12 @@ DROPPED_PAGES: dict[str, dict[int, str]] = {
     "wikinews": {
     },
     "wikivoyage": {
+        1219: "Barcelona/Sagrada Família: edited from barcelona.przewodnik-turystyczny.pl (the page's own "
+              "bibliography names it); 432 of 2,782 characters shared verbatim (Earwig 0.23), a Wayback capture "
+              "of 2006-06-16 already holds the passages, the wiki page was created 2009-06-04",
+        910: "Królewiec: 2,021 of 5,006 characters shared with kaliningraddotblog.wordpress.com/2018/05/07/"
+             "krolewiec-konigsberg/ (Earwig 0.78); the blog post is dated 2018-05-07, the text was added to "
+             "the wiki on 2021-02-23 (revision 108903)",
     },
     "wikibooks": {
         23933: "Historia powszechna/Rzeczpospolita pod panowaniem królów elekcyjnych: copy of sciaga.pl/tekst/"

src/sources.py

@@ -420,18 +420,34 @@ SOURCES = {
         "added": "2026-07-02",
         "release": "0.2.0",
         "file_key": "plwikivoyage",
+        "preserve_id": True,
+        "preserve_created": True,
         "pretty": "Polish Wikivoyage (travel guides)",
-        "license": "CC-BY-SA-3.0",
-        "license_spdx": "CC-BY-SA-3.0",
-        "traceable": "Wikivoyage content is released under CC-BY-SA 3.0; "
-                     "attribution + share-alike preserved.",
-        "upstream": "https://pl.wikivoyage.org/",
-        "provenance": "Fetched directly from the official Wikimedia dump "
-                      "(plwikivoyage-latest-pages-articles) by src/fetch_wikimedia.py; "
-                      "mainspace only, wikitext stripped via mwparserfromhell.",
+        "provenance": "Parsed directly from the official Wikimedia dump "
+                      "plwikivoyage-20260601-pages-articles (sha1 checked against the "
+                      "dump's dumpstatus.json and sha1sums.txt) by "
+                      "src/fetch_wikimedia.py. Articles (namespace 0) only, no "
+                      "redirects; one document per page, id from the page id. The text "
+                      "set is the one released in v0.2.0-v0.2.5 without the 2 pages the "
+                      "rights review withheld (DROPPED_PAGES in src/rights.py); the "
+                      "rebuild adds the page's last-revision time, which sets the "
+                      "licence label.",
+        "license": "CC BY-SA (3.0 or 4.0 per record, by last-revision date)",
+        "license_spdx": "MIXED",
+        "traceable": "Contributors license their text under CC BY-SA 4.0 since the "
+                     "Wikimedia Terms of Use of 2023-06-07, under CC BY-SA 3.0 before. "
+                     "A page whose last revision predates 2023-06-07 is labelled "
+                     "CC-BY-SA-3.0; a page revised on or after that day is an "
+                     "adaptation of the 3.0 text, which 3.0 §4(b)(ii) allows under 4.0, "
+                     "and is labelled CC-BY-SA-4.0. Each row's author field links its "
+                     "page, whose history names the contributors; "
+                     "wikivoyage.attribution.jsonl gives page id, revision id, title "
+                     "and last-revision time per row.",
+        "upstream": "https://dumps.wikimedia.org/plwikivoyage/20260601/",
         "domain": "travel",
-        "created": "2012-01-01, 2025-12-31",
+        "created": "2013-04-21, 2026-06-01",
         "is_ocr": False,
+        "custom_datasheet": True,
     },
     "wikibooks": {
         "added": "2026-07-02",

src/test_wikivoyage_contract.py

@@ -0,0 +1,31 @@
+"""Contract checks for the released wikivoyage source (Polish Wikivoyage, CC BY-SA 3.0 until 2023-06-07 and CC BY-SA 4.0 after); the shared checks live in test_wikimedia_contract.py."""
+
+import json
+
+import pyarrow.parquet as pq
+
+import rights
+from test_wikimedia_contract import ROOT, check_released
+
+# the v0.2.5 rows (documents, characters, tokens) that the rights review withholds: pages 1219 and 910
+WITHHELD = (2, 7820, 2960)
+
+
+def test_wikivoyage_contract(tmp_path):
+    stats, ev = check_released("wikivoyage", tmp_path, dropped=WITHHELD)
+    assert (stats["kept"], stats["tokens"]) == (13643, 17125240)
+    assert stats["licenses"] == {"CC-BY-SA-3.0": 9040, "CC-BY-SA-4.0": 4603}
+    assert ev["release_scope"]["tokens"] == {"CC-BY-SA-3.0": 4232587, "CC-BY-SA-4.0": 12892653}
+    assert ev["cutoff"]["boundary_day"] == {"day": "2023-06-07", "docs_last_edited_that_day": 6}
+    assert ev["release_scope"]["last_edited_before_era_end"] == {"date": "2009-06-15", "docs": 0, "tokens": 0}
+
+
+def test_wikivoyage_withholds_the_two_copied_pages():
+    withheld = rights.DROPPED_PAGES["wikivoyage"]
+    assert set(withheld) == {1219, 910} and all(withheld.values())
+    data = ROOT / "data" / "wikivoyage"
+    ids = set(pq.read_table(data / "wikivoyage.parquet", columns=["id"]).column("id").to_pylist())
+    assert not {f"wikivoyage_{i}" for i in withheld} & ids
+    build = json.loads((data / "wikivoyage.build.json").read_text(encoding="utf-8"))
+    listed = {int(p["pageid"]): (p["title"], p["reason"]) for p in build["prepare"]["dropped_pages"]}
+    assert listed == {1219: ("Barcelona/Sagrada Família", withheld[1219]), 910: ("Królewiec", withheld[910])}