Add comprehensive MotorHandPro production deployment guide

Complete reference for all 4 production features:

1. --upload-only Flag
   - Batch upload workflow
   - Smart skip detection
   - Error handling
   - Use cases and examples

2. --export-best Flag
   - Firmware-ready JSON format
   - Optimization algorithm (70% comfort + 30% speed)
   - Arduino/C++ integration examples
   - Python deployment examples

3. CI/CD GitHub Actions
   - Trigger configurations (push, PR, schedule, manual)
   - Workflow steps explained
   - Artifact management
   - PR comment integration
   - Local testing with act

4. Live Dashboard
   - Installation and usage
   - 5 category views
   - Medal rankings
   - Customization options
   - Theme configuration

Documentation includes:
- Production deployment workflows
- Integration examples (Arduino, Python, Flask)
- Troubleshooting guide
- Performance metrics
- Maintenance procedures
- Advanced usage patterns

Ready for production deployment!

Author: claude