Advanced AI Prompt for Three.js Responsive Mobile-First Particles

Act as a Principal Technical SEO and Mobile Performance Specialist. Create a hyper-optimized, responsive Three.js particle system that programmatically detects client device capabilities. On mobile viewports, strictly enforce a maximum [MOBILE_DENSITY] vertex count and manually cap the renderer's `requestAnimationFrame` loop at [BATTERY_SAVER_FPS] to prevent thermal throttling and battery drain. On desktop, dynamically scale the buffer to [DESKTOP_DENSITY]. Implement a specialized [TOUCH_SENSITIVITY] raycaster for mobile interactions to prevent scroll hijacking. Ensure the WebGLRenderer's `pixelRatio` is clamped gracefully using `Math.min(window.devicePixelRatio, 2)` and that the resize event listener aggressively re-calculates the particle distribution matrix to match the new aspect ratio without memory leaks.