fix：比赛射箭数改为用indexMap字段展示

src/components/HeaderProgress.vue

@@ -60,8 +60,8 @@ async function onReceiveMessage(message) {
     audioManager.play("比赛结束", false);
   } else if (type === MESSAGETYPESV2.ShootResult) {
     if (melee.value && current.playerId !== user.value.id) return;
-    // 直接使用后端返回的 myIndex（当前用户已射箭数），不在前端自增
-    if (current.playerId === user.value.id) currentShot.value = current.myIndex ?? currentShot.value;
+    // 从 indexMap 按当前用户 id 取已射箭数，由后端维护准确值，不在前端自增
+    if (current.playerId === user.value.id) currentShot.value = current.indexMap?.[user.value.id] ?? currentShot.value;
     if (message.shootData) {
       let key = [];
       key.push(