⚡ [optimize MicrotubuleTorus rendering with InstancedMesh]

[jason420247]

💡 What: The optimization implemented

• Refactored MicrotubuleTorus to use THREE.InstancedMesh for rendering.
• Replaced individual mesh mapping with a single instancedMesh component.
• Used a reusable THREE.Object3D instance in the useFrame loop for matrix updates.
• Ensured the offset prop is correctly used in the angle calculation.

🎯 Why: The performance problem it solves

• Rendering 1080 individual meshes (360 + 720 from two torus instances) results in 1080 draw calls per frame, which is extremely expensive for the GPU.
• Individual mesh creation and management in React increases scene graph complexity and memory overhead.

📊 Measured Improvement:

• Theoretical Improvement: Reduced draw calls from 1080 to 2 for the toruses in the scene.
• Memory Efficiency: Eliminated per-frame object allocations for matrix updates by using a reusable Object3D, reducing garbage collection pressure.
• Scene Graph: Simplified the scene graph by replacing 1080 mesh nodes with 2 InstancedMesh nodes.

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PR created automatically by Jules for task 14928936104551388551 started by @jason420247

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