Route stage containers to stage_models (decode both single + stage paths, keep whichever yields more geometry) — fixes stages showing the dummy-root "black cube". Present a stage's sub-models as a thumbnail grid: each recentred and uniformly scaled to a fixed cell so a 1-unit prop and a 3000-unit structure are equally visible; skybox-plane / stray-anchor models (>20000u) are culled. Each sub-model is textured by matching its name to the container's `_col` albedo. Fix the orbit camera: zoom radius was hard-capped at 50u with fixed clip planes, trapping the camera inside multi-thousand-unit stages. Zoom limits and near/far planes now scale to the framed model. Adds docs/HANDOFF-stage-mesh-2026-07-12.md. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>