Ship the six most-requested SaaS locales on top of the English catalog from the foundation card. Spanish, German, French, Portuguese (Brazilian), Arabic (RTL smoke test), Japanese. Source: machine-translate via the BYOK AI provider as a starting draft, then native-speaker review (paid contractor or community) before any locale is enabled by default. Each locale has a quality flag - "draft" locales appear in the switcher with a small "(beta)" tag and a feedback link.

Localised Supabase auth email templates (magic_link, invite, recovery, confirmation, email_change, reauthentication) - one HTML file per locale per template, picked at send time via the user profile locale. Marketing pages (homepage, pricing, mcp-server, compare, glossary) included so the public-facing surface is consistent. Out of scope: locale-specific currency display in pricing (handled by Stripe localized pricing when the Stripe card lands).