fix：返回房间按钮判断当前用户是否还在房间

src/pages/friend-battle-result.vue

@@ -4,7 +4,7 @@ import { onLoad } from "@dcloudio/uni-app";
 import Container from "@/components/Container.vue";
 import Avatar from "@/components/Avatar.vue";
 import UserUpgrade from "@/components/UserUpgrade.vue";
-import { getBattleAPI } from "@/apis";
+import { getBattleAPI, getRoomAPI } from "@/apis";
 import { getBattleResultTips } from "@/constants";
 import audioManager from "@/audioManager";
 import useStore from "@/store";
@@ -243,11 +243,36 @@ const exitBtnText = computed(() => data.value.way === 1 ? '返回房间' : '返
 
 /**
  * 点击底部按钮跳转
- * - 好友约战（way=1）：返回对战房间
+ * - 好友约战（way=1）：先调接口确认用户仍在房间
+ *   - 已被踢出或房间不存在 → toast 提示并 reLaunch 到首页
+ *   - 仍在房间 → 跳回对战房间
  * - 其他模式（排位赛等）：跳转到排位赛首页
  */
-function exit() {
+async function exit() {
   if (data.value.way === 1) {
+    try {
+      const roomInfo = await getRoomAPI(data.value.roomId);
+      const members = roomInfo?.members || [];
+      const myIdStr = String(user.value.id);
+      // 判断当前用户是否仍在房间成员列表中
+      const stillInRoom = members.some(
+        (m) => String(m.userInfo?.id) === myIdStr
+      );
+      if (!stillInRoom) {
+        uni.showToast({ title: '您已经不在当前房间', icon: 'none' });
+        setTimeout(() => {
+          uni.reLaunch({ url: '/pages/index' });
+        }, 1500);
+        return;
+      }
+    } catch {
+      // 接口异常（如房间已解散）同样视为已不在房间
+      uni.showToast({ title: '您已经不在当前房间', icon: 'none' });
+      setTimeout(() => {
+        uni.reLaunch({ url: '/pages/index' });
+      }, 1500);
+      return;
+    }
     uni.redirectTo({
       url: `/pages/battle-room?roomNumber=${data.value.roomId}`,
     });