fix(admin/player/api): 同步单关串关持久化、仅串关可选与盘口状态展示

1. 后台/API：赛事详情返回 allowSingle/allowParlay，管理端 mapMarkets 正确回读
2. 玩家端：仅关单关时仍可点选加入串关；投注抽屉禁用单关提交并提示
3. 玩家端：盘口暂停/已关闭状态标签；MarketTypeTile 展示 statusLabel

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

apps/player/src/components/BetSlipDrawer.vue

@@ -57,9 +57,17 @@ const canSubmitActive = computed(() => {
   if (activeTab.value === 'parlay') {
     return slip.parlayItems.length >= PARLAY_MIN_LEGS && slip.parlayItems.length <= PARLAY_MAX_LEGS;
   }
-  return Boolean(slip.singleItem);
+  return Boolean(slip.singleItem) && slip.singleItem.allowSingle !== false;
 });
 
+const singleParlayOnlyHint = computed(
+  () =>
+    activeTab.value === 'single' &&
+    Boolean(slip.singleItem) &&
+    slip.singleItem!.allowSingle === false &&
+    slip.singleItem!.allowParlay !== false,
+);
+
 const balanceText = computed(() => {
   if (balanceLoading.value) return t('bet.loading');
   if (balance.value == null) return '--';
@@ -356,6 +364,7 @@ watch(
             </div>
             <div class="item-odds">{{ slip.singleItem.odds.toFixed(2) }}</div>
           </div>
+          <p v-if="singleParlayOnlyHint" class="warning">{{ t('bet.slip_parlay_only_hint') }}</p>
 
           <template v-if="activeTab === 'parlay'">
             <p v-if="parlayWarning" class="warning">{{ parlayWarning }}</p>