⚡ [Optimize MicrotubuleTorus rendering with InstancedMesh]

[jason420247]

💡 What: Replaced individual mesh components in the MicrotubuleTorus component with THREE.InstancedMesh. Used a reusable Object3D for efficient matrix updates in the useFrame loop and added frustumCulled={false} for reliable rendering.

🎯 Why: Rendering thousands of individual meshes (1080 in the current scene) is extremely expensive due to excessive draw calls. Using InstancedMesh reduces this to 2 draw calls, significantly improving performance.

📊 Measured Improvement: Theoretical reduction in draw calls from 1080 to 2 (99.8% reduction). verified via code analysis and established patterns in the repository.

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PR created automatically by Jules for task 668482703742474345 started by @jason420247

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