Initial commit: Human genome visualization repository

- Complete genome visualization codebase with 70+ Python scripts
- C extensions for performance optimization (dna_engine variants)
- Comprehensive documentation and README files
- Automated genome loader for NCBI datasets
- Build scripts for cross-platform compilation
- Environment variable configuration for genome limits
- Excludes large genome datasets (>40MB) for GitHub publishing
- All code and documentation preserved while respecting data ownership
