Amend v2 registration: Quebec withdrawn; bilingual moves to federal EN/FR

Step 2 established the licence position for every candidate fixture source
before any document was cut, and one result withdraws a family registered
hours earlier.

LegisQuebec requires prior authorisation from Publications du Quebec, with
royalties, binding on for-profit and non-profit bodies alike - and names this
use case directly: anyone downloading its content to process with, or to
feed, an AI tool must obtain authorisation first. Only hyperlinking is free.
So Quebec material is not merely non-redistributable, it may not be used as
unshipped processing input either. The Bilingual and Quebec family is
withdrawn; no Quebec text enters the benchmark and none is read into a model.
A2AJ excludes Quebec and Nunavut entirely, which corroborates the reading.

Bilingual survives on a cleaner footing: Canadian federal enactments are made
in both languages with both equally authoritative, and SI/97-5 permits anyone
to reproduce them without charge or permission. A2AJ carries the French
mirror of every federal row.

Also frozen before any fixture is cut: CUAD and MAUD redistributable under
CC BY 4.0 (with the caveat that neither GitHub repo carries a LICENSE file,
so the grant rests on the dataset card and Zenodo record); SEC EDGAR exhibits
redistributable in practice but NOT by grant, since 17 USC 105 does not reach
a privately drafted agreement - stated as risk, not licence; Ontario statutes
and regulations under the King's Printer policy; US federal AO forms under
105. Excluded: ContractNLI's scraped corporate NDA templates, PrivacyQA,
PSPC SACC, Ontario court forms, US state court forms, and A2AJ's BC, PEI and
Saskatchewan laws.

Records one repo-hygiene finding outside this benchmark: the bundled
CourtListener data is licence-clean but carries no attribution anywhere in
the repo, and there is no THIRD_PARTY_NOTICES.md.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01H9ToHYJVDxfeJcJwdzrP2H