Enable i18n (next-intl, no Markets)

Wire next-intl into the template so the storefront serves locale-prefixed URLs (/en-US/products/foo), loads per-locale message catalogs, and exposes a locale switcher. The template ships single-locale by default with clean URLs (/products/foo) — this skill restores the i18n machinery.

Use enable-shopify-markets instead if you want region-aware pricing/inventory/payments. That skill builds on the same routing layer plus Markets-specific operations. If you only want URL prefixing and translated copy, this skill is the right one.

Source of truth: lib/i18n/index.ts

The locale list lives in lib/i18n/index.ts as locales and enabledLocales. Always read those at the start of the skill — don't hardcode a list. Adding new locales means editing that file plus the localeCurrency map; everything downstream (routing, sitemap, alternates, switcher) reads from it.

// lib/i18n/index.ts
export const locales = ["en-US", "en-GB", "de-DE", "fr-FR"] as const;
export const defaultLocale: Locale = "en-US";
export const enabledLocales: readonly Locale[] = locales;

What this skill turns on