Set up the PLAYTEX Image to Three.js workflow in this project.

1. Read https://www.playtex.ai/image-to-threejs/agent.md.
2. Install the img2threejs skill if it is missing:
   npx skills add https://github.com/hoainho/img2threejs --skill img2threejs -g
3. Confirm that the skill is available, then ask me for one object reference image and its intended use.
4. When I provide the image, use the installed $img2threejs skill. Follow its intake, quality-contract, staged sculpt, multi-angle review, and bounded correction gates. Do not stop at a plan.
5. Return createModel.ts, object-sculpt-spec.json, comparison evidence, and honest fidelity/limitation notes. The factory must return a THREE.Group and preserve root.userData.sculptRuntime.

Keep the reference image and generated artifacts in my project. Do not upload them to PLAYTEX.