- Fixed repo fetching to include all UD repos (5 pages vs 3)
- Added 166 missing UD repositories as submodules
- Fetched tags and checked out r2.17 for 102 newly added repos
- Regenerated metadata to include all new treebanks with r2.17 tags

Notable additions:
- Portuguese-CINTIL (blocked from Parquet, license-restricted)
- 100+ additional treebanks including various languages and dialects

Some newly added repos don't have r2.17 tags yet and will be
included in future releases.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>