Argon Atlas v53.0 — 270 models

Gemini 4 Argon released v53.0: 270 real-world 3D PBR models — 29.28M vertices, 55.88M triangles, 3,513/3,513 checks (commit 892049a). New scenes: Caesars Head SC, Craggy Gardens NC, Natural Tunnel VA, Downtown Madison 3D, Redwood Alcove-to-Foyer Wing.

Cadence: v51 260 → v52 265 → v53 270. Path v54+.