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/components/outright/OutrightOptionCard.vue

@@ -6,11 +6,14 @@ const props = defineProps<{
   teamCode: string;
   teamName: string;
   odds: string;
+  logoUrl?: string | null;
 }>();
 
 const emit = defineEmits<{ pick: [] }>();
 
-const flag = computed(() => teamFlagUrl(props.teamCode, props.teamName));
+const flag = computed(
+  () => props.logoUrl?.trim() || teamFlagUrl(props.teamCode, props.teamName),
+);
 const flagFailed = ref(false);
 
 function onFlagError() {
@@ -18,7 +21,7 @@ function onFlagError() {
 }
 
 watch(
-  () => [props.teamCode, props.teamName] as const,
+  () => [props.teamCode, props.teamName, props.logoUrl] as const,
   () => {
     flagFailed.value = false;
   },