Replace entire repo content with correct code from /root/shahikitchen-website/

domain/language/entities.ts

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+export type Language = 'en' | 'sv' | 'hi' | 'ur' | 'ar' | 'tr';
+
+export const SUPPORTED_LANGUAGES: readonly Language[] = [
+  'sv',
+  'en',
+  'ar',
+  'tr',
+  'hi',
+  'ur',
+] as const;
+
+export const DEFAULT_LANGUAGE: Language = 'sv';
+
+export const RTL_LANGUAGES: readonly Language[] = ['ar', 'ur'] as const;
+
+export function isLanguage(value: string): value is Language {
+  return (SUPPORTED_LANGUAGES as readonly string[]).includes(value);
+}
+
+export function isRtlLanguage(language: Language): boolean {
+  return (RTL_LANGUAGES as readonly string[]).includes(language);
+}
+
+export interface LanguageOption {
+  code: Language;
+  name: string;
+  native: string;
+  flag: string;
+}

domain/language/repository.ts

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+import type { Language } from './entities';
+
+/** Port: language preference persistence. */
+export interface LanguageRepository {
+  load(): Language | null;
+  save(language: Language): void;
+}