fix: Prevent WebGPU setIndexBuffer and vertex buffer slot errors#1159
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- Add cloneGeometryForGPU helper to UnitRenderer and ResourceRenderer - Ensures cloned geometry attributes have needsUpdate=true to force fresh GPU buffer creation - Generates UV coordinates for models missing them (fixes "Vertex buffer slot 1" errors from Tripo/Meshy AI models) - Updates existing cloneGeometryForGPU helpers in BuildingRenderer, InstancedDecorations, and GPUIndirectRenderer with UV generation https://claude.ai/code/session_01RVGDnXRzL5S5tELbcBqYrN
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https://claude.ai/code/session_01RVGDnXRzL5S5tELbcBqYrN