⚡ Bolt: Fix crash & optimize animation loop in OrbitalNodes

[google-labs-jules]

💡 What:

• Fixed a ReferenceError (crash) in OrbitalNodes.js by renaming sharedGeometry to geometry.
• Optimized the animation loop in OrbitalNodes.update() by replacing forEach with a standard for loop to reduce GC pressure.
• Centralized time calculation in SceneManager and passed it to OrbitalNodes.update(time) to avoid redundant Date.now() calls.
• Bound SceneManager.animate in the constructor to avoid creating closures every frame.
• Removed ineffective emissiveIntensity updates for MeshBasicMaterial.

🎯 Why:

• The application was crashing on initialization due to a variable name typo, preventing the 3D scene from rendering.
• Animation loops are hot paths (60fps); reducing allocations and function calls improves frame consistency and battery life.

📊 Impact:

• Fixes the crash (Enables the feature).
• Reduces garbage collection overhead in the render loop.
• Reduces system calls (Date.now()) per frame.

🔬 Measurement:

• Verify the crash is gone by running the app (verified via screenshot).
• src/tests/OrbitalNodes.test.js confirms instantiation works.

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PR created automatically by Jules for task 4072497108374923028 started by @4444J99

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[4444J99]

Engaging as a real, still-open want (not falsely superseded): this targets the Three.js front-end (src/OrbitalNodes.js / src/SceneManager.js / src/main.js). main already reuses a single shared geometry and null-guards hover state, but the specific crash/animation-loop concern this PR raises can't be soundly verified without running the live WebGL scene, and the diff is CONFLICTING against the current post-refactor code. Rather than blind-merge a stale draft or falsely claim it's fixed, I'm keeping this open as the anchor for a proper distillation into the current OrbitalNodes architecture (with a headless-render or unit-level guard) — never closed.