feat(player): 注册账号、登录双模式与移动端性能优化

注册必填 7-32 位账号，手机号区号/本地号分存；登录默认账号模式并支持切换手机号登录；Player i18n 拆包与赛事接口优化。

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

apps/player/src/i18n/index.ts

@@ -0,0 +1,43 @@
+import type { Locale } from '@thebet365/shared';
+
+export const PLAYER_LOCALE_STORAGE_KEY = 'locale';
+
+export type PlayerLocale = Locale;
+
+const localeLoaders: Record<PlayerLocale, () => Promise<{ default: Record<string, unknown> }>> = {
+  'zh-CN': () => import('./zh-CN'),
+  'en-US': () => import('./en-US'),
+  'ms-MY': () => import('./ms-MY'),
+};
+
+export async function loadLocaleMessages(locale: PlayerLocale) {
+  const loader = localeLoaders[locale] ?? localeLoaders['zh-CN'];
+  const mod = await loader();
+  return mod.default;
+}
+
+const loadedLocales = new Set<PlayerLocale>();
+
+export function markLocaleLoaded(locale: PlayerLocale) {
+  loadedLocales.add(locale);
+}
+
+/** 切换语言时按需加载文案包（与首屏单语言拆包配合） */
+export async function ensurePlayerLocale(
+  composer: {
+    mergeLocaleMessage: (locale: string, message: Record<string, unknown>) => void;
+    availableLocales: string[];
+  },
+  locale: PlayerLocale,
+) {
+  if (loadedLocales.has(locale) || composer.availableLocales.includes(locale)) return;
+  const messages = await loadLocaleMessages(locale);
+  composer.mergeLocaleMessage(locale, messages);
+  loadedLocales.add(locale);
+}
+
+export function readStoredLocale(): PlayerLocale {
+  const raw = localStorage.getItem(PLAYER_LOCALE_STORAGE_KEY) || 'zh-CN';
+  if (raw in localeLoaders) return raw as PlayerLocale;
+  return 'zh-CN';
+}