- Parse embedded_files sections in KiCad footprint files - Extract and decompress (zstd) embedded STEP models - Add backend endpoint to serve 3D models - Add UI section to display and download 3D models - Include Three.js library for future interactive viewing - Provide download link for extracted STEP files - Note: Interactive 3D viewing requires STEP to STL/OBJ conversion (future enhancement) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>