feat: WC2026 赛事 seed、生产上线初始化脚本与目录归档

重构 seed 为 WC2026 72 场小组赛与 48 强优胜盘；新增 production 模式仅保留 admin 与赛事示例；提供 prod-init-db 全量重置脚本；管理端 i18n 分包与赛事归档能力。

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/admin/src/i18n/index.ts

@@ -1,19 +1,23 @@
 import { createI18n } from 'vue-i18n';
 import { adminMessages, type AdminLocale } from './admin-messages';
+import { ensureAdminLocaleLoaded } from './locale-loader';
 
 export const ADMIN_LOCALE_STORAGE_KEY = 'admin_locale';
 
 const saved = (localStorage.getItem(ADMIN_LOCALE_STORAGE_KEY) as AdminLocale) || 'zh-CN';
 
-export const i18n = createI18n({
-  legacy: false,
-  locale: saved,
-  fallbackLocale: ['en-US', 'zh-CN'],
-  messages: adminMessages,
-});
-
-export function getAdminLocale(): AdminLocale {
-  return i18n.global.locale.value as AdminLocale;
+export async function createAdminI18n() {
+  await ensureAdminLocaleLoaded(saved);
+  return createI18n({
+    legacy: false,
+    locale: saved,
+    fallbackLocale: ['en-US', 'zh-CN'] as AdminLocale[],
+    messages: adminMessages,
+  });
 }
 
-export default i18n;
+export function getAdminLocale(): AdminLocale {
+  return (localStorage.getItem(ADMIN_LOCALE_STORAGE_KEY) as AdminLocale) || 'zh-CN';
+}
+
+export default adminMessages;