Replace trimesh-only GLB export with Blender headless pipeline using
export_gltf.py. The viewer GLB and downloadable GLB now receive:
- Material substitution via the Schaeffler asset library (.blend)
- OCC-derived sharp edge data (sharp_edge_midpoints from mesh_attributes)
marked as Blender sharp edges before export
Material map is resolved via resolve_material_map() to convert aliases
(e.g. "Steel--Stahl" → "SCHAEFFLER_010101_Steel-Bare") before passing
to Blender. Old gltf_geometry MediaAsset is replaced on each run to
avoid stale records accumulating.
Trimesh kept as fallback if Blender binary unavailable.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Hartmut
c1e9a86996