feat(admin,api,player): 赛事分组管理、盘口独立页与多语言展示优化

- 管理端按联赛展示单场，新增赛事/单场流程与列表展开状态保持

- 盘口赔率迁至独立页面，保存按钮仅在有修改时高亮

- API 新增联赛列表与子场查询，按 locale 返回队名并修复编译

- 波胆其它选项与促销标签等 i18n 补齐，文案更易懂

apps/admin/src/data/builtinCountries.ts

@@ -97,16 +97,79 @@ export function countryFlagUrl(country: BuiltinCountry | string): string {
   return `https://flagcdn.com/w40/${c.iso}.png`;
 }
 
-export function searchBuiltinCountries(keyword: string): BuiltinCountry[] {
+/** 按后台当前语言显示国家名（下拉只显示一种语言） */
+export function countryDisplayName(c: BuiltinCountry, locale: string): string {
+  if (locale === 'en-US') return c.nameEn;
+  if (locale === 'ms-MY') return countryNameMs(c);
+  return c.nameZh;
+}
+
+export function countryOptionLabel(c: BuiltinCountry, locale: string): string {
+  return `${countryDisplayName(c, locale)} (${c.code})`;
+}
+
+/** 常用国家队马来语名（无则用英文，避免与中文混排） */
+const COUNTRY_MS: Partial<Record<string, string>> = {
+  CAN: 'Kanada',
+  USA: 'Amerika Syarikat',
+  MEX: 'Mexico',
+  BRA: 'Brazil',
+  ARG: 'Argentina',
+  ENG: 'England',
+  FRA: 'Perancis',
+  GER: 'Jerman',
+  ESP: 'Sepanyol',
+  POR: 'Portugal',
+  NED: 'Belanda',
+  BEL: 'Belgium',
+  CRO: 'Croatia',
+  SUI: 'Switzerland',
+  POL: 'Poland',
+  SWE: 'Sweden',
+  NOR: 'Norway',
+  DEN: 'Denmark',
+  JPN: 'Jepun',
+  KOR: 'Korea Selatan',
+  AUS: 'Australia',
+  RSA: 'Afrika Selatan',
+  MAR: 'Maghribi',
+  SEN: 'Senegal',
+  GHA: 'Ghana',
+  EGY: 'Mesir',
+  TUN: 'Tunisia',
+  ALG: 'Algeria',
+  KSA: 'Arab Saudi',
+  QAT: 'Qatar',
+  IRN: 'Iran',
+  IRQ: 'Iraq',
+  CHN: 'China',
+  THA: 'Thailand',
+  VIE: 'Vietnam',
+  IDN: 'Indonesia',
+  MAS: 'Malaysia',
+  BIH: 'Bosnia',
+  SCO: 'Scotland',
+  WAL: 'Wales',
+  NZL: 'New Zealand',
+};
+
+function countryNameMs(c: BuiltinCountry): string {
+  return COUNTRY_MS[c.code] ?? c.nameEn;
+}
+
+export function searchBuiltinCountries(keyword: string, locale = 'zh-CN'): BuiltinCountry[] {
   const k = keyword.trim().toLowerCase();
   if (!k) return BUILTIN_COUNTRIES;
-  return BUILTIN_COUNTRIES.filter(
-    (c) =>
+  return BUILTIN_COUNTRIES.filter((c) => {
+    const display = countryDisplayName(c, locale);
+    return (
       c.code.toLowerCase().includes(k) ||
       c.nameZh.includes(keyword.trim()) ||
       c.nameEn.toLowerCase().includes(k) ||
-      c.iso.toLowerCase().includes(k),
-  );
+      display.toLowerCase().includes(k) ||
+      c.iso.toLowerCase().includes(k)
+    );
+  });
 }
 
 export function resolveCountryCode(