feat(i18n): 管理端与玩家端三语支持（中/英/马来语）

- 管理后台 adminT 文案库、结算与代理端页面、表单校验
- 玩家端 vue-i18n 补全首页/公告/串关与 ms 文案
- Element Plus ms 语言包与共享 locale 工具

apps/player/src/views/ProfileView.vue

@@ -6,16 +6,12 @@ import api from '../api';
 import { formatMoney } from '../utils/localeDisplay';
 import LocaleFlag from '../components/LocaleFlag.vue';
 import { useAuthStore } from '../stores/auth';
+import { useAppLocale } from '../composables/useAppLocale';
 
 const { t, locale } = useI18n();
 const router = useRouter();
 const auth = useAuthStore();
-
-const locales = [
-  { code: 'zh-CN', label: '中文' },
-  { code: 'en-US', label: 'EN' },
-  { code: 'ms-MY', label: 'BM' },
-] as const;
+const { locales, setLocale, initFromUser } = useAppLocale();
 
 const profile = ref<{
   username?: string;
@@ -25,12 +21,11 @@ const profile = ref<{
 onMounted(async () => {
   const { data } = await api.get('/player/profile');
   profile.value = data.data;
+  initFromUser(data.data?.locale);
 });
 
 async function changeLocale(code: string) {
-  locale.value = code;
-  localStorage.setItem('locale', code);
-  await api.post('/player/language', { locale: code });
+  await setLocale(code);
 }
 
 function logout() {
@@ -79,6 +74,19 @@ function logout() {
           </button>
         </div>
       </div>
+
+      <div class="settings-cell settings-cell--stack rules-cell">
+        <div class="cell-head">
+          <span class="cell-label">{{ t('profile.rules_title') }}</span>
+        </div>
+        <div class="rules-body">
+          <p>{{ t('profile.rules_p1') }}</p>
+          <p>{{ t('profile.rules_p2') }}</p>
+          <p>{{ t('profile.rules_p3') }}</p>
+          <p>{{ t('profile.rules_p4') }}</p>
+          <p>{{ t('profile.rules_p5') }}</p>
+        </div>
+      </div>
     </section>
 
     <button type="button" class="logout-btn" @click="logout">
@@ -236,4 +244,19 @@ function logout() {
 .logout-btn:active {
   background: rgba(255, 69, 58, 0.08);
 }
+
+.rules-body {
+  padding: 0 0 12px;
+  font-size: 12px;
+  line-height: 1.55;
+  color: var(--text-muted);
+}
+
+.rules-body p {
+  margin: 0 0 8px;
+}
+
+.rules-body p:last-child {
+  margin-bottom: 0;
+}
 </style>