Orbit Lab: A 3D Simulation of the Sun, Earth, and Moon

This is a comparison experiment. Implement and complete the following web app with the exact same specifications in your working directory. Name it “Orbit Lab.” Use Three.js 0.186.0 and load the core library and OrbitControls at the same version (either via a CDN import map or npm is fine). There is no need to publish or deploy it. Requirements: 1. Represent 3D models of the Sun, Earth, and Moon using procedural geometry and materials. Do not use external images or 3D assets. Use the Sun as a point light so that the lighting on Earth and the Moon is visible as the camera moves. 2. Animate Earth’s orbit and rotation, its axial tilt, and the Moon’s orbit using delta time. Visualize the tilt of the orbital plane and display orbit lines for Earth and the Moon. The scale and speed may be exaggerated for educational purposes. 3. Generate a reproducible starfield background using a seeded random number generator. Use OrbitControls for rotation and zoom. Clicking a celestial body must change its selected state and the information panel. 4. Include play/pause, a speed slider, an orbit-line visibility toggle, camera focus controls for the Sun, Earth, and Moon, and a button to restore the initial state. Play/pause and reset must also work from the keyboard. 5. Make the interface usable on smartphone-width screens, provide a message for browsers without WebGL support, handle resizing, and cap the pixel ratio to avoid excessive rendering load. 6. Add startup instructions and controls to the README. If possible, launch the app and verify that it works; if not, clearly state why. In the completion report, briefly list the files created, implemented features, and verification results. Do not ask questions during the process. Make reasonable decisions and implement everything through to completion.