feat: full studio build -- light theme, canvas thumbnails, i18n (fa/en)

src/i18n/routing.ts

@@ -0,0 +1,12 @@
+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",
+});
+
+export type Locale = (typeof routing.locales)[number];