feat(admin,player,api): 公共管理与优胜冠军国旗、玩家端内容对接

新增公共内容 CRUD 与批量操作；公告滚动合并管理；优胜冠军内置国家选择与单行保存；玩家端统一 usePlayerHome 对接轮播与跑马灯。

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

apps/player/src/composables/useAnnouncements.ts

@@ -1,38 +1,7 @@
-import { ref } from 'vue';
-import { useI18n } from 'vue-i18n';
-import api from '../api';
-import { resolveAnnouncements } from '../constants/defaultAnnouncement';
-
-function collectAnnouncementLines(data: {
-  ticker?: Array<{ translation?: { title?: string; body?: string } }>;
-  notices?: Array<{ translation?: { title?: string; body?: string } }>;
-} | null): string[] {
-  const lines: string[] = [];
-  if (!data) return lines;
-  for (const item of data.ticker ?? []) {
-    const text = item.translation?.body || item.translation?.title;
-    if (text) lines.push(text);
-  }
-  for (const item of data.notices ?? []) {
-    const text = item.translation?.title || item.translation?.body;
-    if (text) lines.push(text);
-  }
-  return lines;
-}
+import { usePlayerHome } from './usePlayerHome';
 
+/** @deprecated 请使用 usePlayerHome */
 export function useAnnouncements() {
-  const { t } = useI18n();
-  const items = ref<string[]>(resolveAnnouncements([], t('home.announcement_default')));
-
-  async function load() {
-    const fallback = t('home.announcement_default');
-    try {
-      const { data } = await api.get('/player/home');
-      items.value = resolveAnnouncements(collectAnnouncementLines(data.data), fallback);
-    } catch {
-      items.value = resolveAnnouncements([], fallback);
-    }
-  }
-
-  return { items, load };
+  const { announcements, load } = usePlayerHome();
+  return { items: announcements, load };
 }