feat(installer): 便携中文安装包「年糕历险记-Setup-v0.1.0.zip」——安装.bat 中文交互+桌面快捷方式；修复 ps1 BOM 编码

cmd/client/screens_gl.go

@@ -52,7 +52,7 @@ func buildScreens(r *ui.Renderer, lang *assets.Lang) (*ui.TitleScreen, *ui.Pause
 	title.TitleH = titleH
 	title.Buttons = []ui.Button{
 		btn("menu.singleplayer", "单人游戏", "play", 300, 1280, 720),
-		btn("menu.multiplayer", "多人游戏", "", 350, 1280, 720),
+		btn("menu.multiplayer", "多人游戏", "multi", 350, 1280, 720),
 		btn("menu.quit", "退出游戏", "quit", 400, 1280, 720),
 	}
 	_ = titleTex