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/i18n/en-US.ts

@@ -367,6 +367,8 @@ export default {
     outright_player_only: 'Player login required',
     outright_shown_count: '{shown} / {total} teams shown',
     outright_load_more: 'Load more',
+    outright_settled: 'Settled',
+    outright_settled_hint: 'This event is settled. Odds and results are view-only.',
     cancel: 'Cancel',
     parlay_max_legs: 'Parlay allows up to 5 legs',
     parlay_block_outright: 'Outright cannot be parlayed',