Interactive Vision Gestures:
- 🤏 Pinch (Thumb & Index): Morph to next 3D shape
- ↔️ Move Hand Left / Right: Dynamic HSL color shifting
- ↕️ Move Hand Closer / Farther: Expand & zoom particle scale
- ☝️ Index Pointing: Attract stardust into glowing laser vortex
Scale: s = lerp(s, ||index - wrist|| · 4, 0.1)
Hue: HSL(handX, 1.0, 0.5)
Morph: pos = lerp(pos, target · s, 0.05)