feat(admin+api+player): 优胜赛结算态、禁止新增单场与钱包流水展示优化

- API/管理端：优胜赛 SETTLED 后禁止新增单场，列表与子页展示结算状态
- 玩家端：已结算 outright 只读展示并高亮冠军
- 管理端：结算后 stale 标记驱动列表刷新；财务流水时间与备注 i18n 优化
- shared：txDisplayAmount 与 LEAGUE_OUTRIGHT_SETTLED 错误码

apps/player/src/views/WalletTransactionDetailView.vue

@@ -4,7 +4,7 @@ import { useRoute, useRouter } from 'vue-router';
 import { useI18n } from 'vue-i18n';
 import api from '../api';
 import { formatMoney } from '../utils/localeDisplay';
-import { txTypeKey, isCashbackType, txDisplayType, txSummaryLabel, txRemarkLabel, isDepositReversalType } from '../utils/walletTx';
+import { txTypeKey, isCashbackType, txDisplayType, txAmountClass, txSummaryLabel, txRemarkLabel, isDepositReversalType } from '../utils/walletTx';
 import GoldSpinner from '../components/GoldSpinner.vue';
 import { usePullToRefresh } from '../composables/usePullToRefresh';
 
@@ -81,10 +81,7 @@ const summaryText = computed(() => {
   return txSummaryLabel(tx.value, t);
 });
 
-const amountClass = computed(() => {
-  if (!tx.value) return '';
-  return parseFloat(tx.value.amount) >= 0 ? 'pos' : 'neg';
-});
+const amountClass = computed(() => (tx.value ? txAmountClass(tx.value.amount) : 'zero'));
 
 const formattedTime = computed(() => {
   if (!tx.value) return '';
@@ -279,6 +276,11 @@ function goCashbackDetail() {
   background: linear-gradient(135deg, rgba(224, 80, 80, 0.1), rgba(224, 80, 80, 0.03));
 }
 
+.hero.zero {
+  border-color: rgba(255, 255, 255, 0.08);
+  background: #141414;
+}
+
 .hero-type {
   font-size: 12px;
   font-weight: 800;
@@ -303,6 +305,7 @@ function goCashbackDetail() {
 
 .hero.pos .hero-amount { color: var(--primary-light); }
 .hero.neg .hero-amount { color: var(--danger); }
+.hero.zero .hero-amount { color: var(--text-muted, #888); }
 
 .hero-time {
   font-size: 11px;
@@ -350,6 +353,7 @@ function goCashbackDetail() {
 
 .pos { color: var(--primary-light) !important; }
 .neg { color: var(--danger) !important; }
+.zero { color: var(--text-muted, #888) !important; }
 
 .mono {
   font-family: ui-monospace, monospace;