t-SNE: ship precomputed embedding cache (instant, no timeout); remove stale Agents link

remove per-part colour editor; car uses one whole-body colour (swatches)

parts panel: remove glass colour/clarity controls (looked weird); body stays one uniform colour

car-focused 'How it works' explainer + repoint link; add scikit-learn (t-SNE)

point cloud view: clear the parts-editor meshes so it never stacks on the solid

chat_cad live (Docker app + weights)