v0.12.0

What's Changed

• feat(theme): --nb-* design-token contract + consumer stylesheet by @wamxx in #19
• feat(scheme): manual light/dark toggle + light-dark() token migration by @wamxx in #20
• feat(lint): internal-link validator against the build's route truth by @wamxx in #21
• docs(fr): French version of the documentation site (suffix i18n) by @wamxx in #22
• feat(qol): edit-this-page link, git last-updated, separate public outDir by @wamxx in #23
• docs: sync skills + references with lint/editPattern/lastUpdated by @wamxx in #24

Full Changelog: v0.11.0...v0.12.0