Add support for uploading and displaying OBJ 3D models as rotating
wireframe graphics on the TV output. Includes OBJ parser with
auto-scaling, NVS persistence, HTTP endpoints for upload/clear/status,
web UI with zoom and X/Y/Z rotation sliders, and screen state 18
integration with the rotation system.
Also add CLAUDE.md with project build instructions and architecture notes.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
