The user wants me to create a single-page web app that:
1. Uses the pre-existing three.min.js (not load from CDN)
2. Visualizes the Lorenz attractor as a glowing 3D butterfly trajectory
3. The trajectory should draw over time
4. Should have orbit-drag camera controls
5. All in one file index.html

Let me first check what's in the current directory, especially to confirm three.min.js is there.

Good, three.min.js is present. Now I need to create the index.html file with:

1. Lorenz attractor equations:
   dx/dt = σ(y - x)
   dy/dt = x(ρ - z) - y
   dz/dt = xy - βz
   
   Typical parameters: σ=10, ρ=28, β=8/3 (these produce the classic butterfly)

2. Visualization elements:
   - 3D scene with THREE.js
   - A line/curve that grows over time showing the trajectory
   - Glow effect using shader materials or post-processing
   - Orbit camera controls that can be dragged

3. Animation:
   - Start at initial conditions (e.g., x=1, y=1, z=1)
   - Numerically integrate (simple Euler or RK4) step by step
   - Add points to a Line geometry gradually

Let me create a comprehensive index.html with:
- Basic HTML structure
- CSS for styling (dark background)
- THREE.js setup
- Lorenz system integration
- Growing line visualization with glow
- Orbit camera controls using mouse drag
- Animation loop

I'll use:
- THREE.BufferGeometry for the line
- ShaderMaterial for glow effect
- Basic mouse controls for orbit camera

Great! I've created the Lorenz attractor visualization. Let me verify it works by checking the file and describing what I've created.