flatrender/src/i18n/routing.ts

import { defineRouting } from "next-intl/routing";

export const routing = defineRouting({
  /** All supported locales */
  locales: ["fa", "en"] as const,
  /** Default locale — no URL prefix */
  defaultLocale: "fa",
  /** Default locale gets no /fa/ prefix; English is under /en/ */
  localePrefix: "as-needed",
  /**
   * Never auto-switch locale from the browser's Accept-Language. A non-prefixed
   * URL always serves Farsi (the default); English is reached only via an
   * explicit /en/ prefix — so clicking Farsi links no longer bounces to /en.
   */
  localeDetection: false,
});

export type Locale = (typeof routing.locales)[number];