Contour to Mesh

Use this when a reference silhouette is the contract. The mesh starts as a filled 2D contour in front-view X/Z, then gets shallow Y depth/crown after validation.

Workflow

1. Extract or select a clean contour/mask for one structural part.
2. Generate a triangulated mesh recipe with scripts/mask_to_mesh_recipe.py.
3. Run the generated Blender Python to create a named GEO_* mesh.
4. Assign front-projected UVs immediately.
5. Add depth only as a modifier or vertex displacement that preserves X/Z boundary positions.
6. Validate the front render against the source mask.

Hard rules