I want to create a small immersive web experience: flying through volumetric clouds during a nighttime meteor shower. Use Babylon.js to build the scene, render the clouds with a ray marching technique, and have the camera smoothly traverse the clouds along a predefined “shuttle path.” Use the Web Audio API to synthesize continuous ambient white noise as the background sound. Add a simple gameplay mechanic: when a meteor streaks through the center of the screen, play a synthesized cue sound and increase the on-screen score by +1. Please provide a complete implementation, including the cloud shader, meteor generation and movement, center-crossing detection logic, scoring UI, and audio triggers, ensuring it runs smoothly in the browser.