archviz rule: an elevation must not lean. hero-facade-front looked up ~4 deg from 4.2 m at a 7.6 m target (columns converged); demo-spawn-view and demo-street-level were pitched too. All three now sit at the target's height, so pitch and roll are zero by construction and the verticals stay parallel. Screenshots re-rendered. A pixel-based verticality check is useless here (banners and windows break naive edge matching), so the guarantee is geometric and is recorded that way in the README and MEMORY.
2.2 MiBLFS
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2.2 MiBLFS
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