fix: 暂存

src/main/java/com/webgame/webgamebackend/service/impl/GameServiceImpl.java

@@ -239,10 +239,9 @@ public class GameServiceImpl implements GameService {
         List<RoomPlayerEntity> remaining = roomPlayerRepository.findByRoomId(roomId);
 
         if (remaining.isEmpty()) {
-            // 无人了，房间标记为结束
-            room.setStatus("finished");
-            gameRoomRepository.save(room);
-            log.info("[游戏服务] 房间无人，标记为结束, roomId={}", roomId);
+            // 无人了，物理删除房间（对局记录和走棋记录保留用于历史查询）
+            gameRoomRepository.delete(room);
+            log.info("[游戏服务] 房间无人，已删除, roomId={}", roomId);
         } else if (userId.equals(room.getCreatorId())) {
             // 房主离开，顺位转让给下一个玩家
             RoomPlayerEntity nextOwner = remaining.get(0);