JBrowse2 Batch Track Submission v2.1.0 🎯 Key Features: - Three duplicate handling policies: skip, overwrite, interactive - Removed --allow-duplicates to prevent JBrowse2 display issues - Comprehensive error handling with severity levels - Custom exception system for duplicate management 🔧 Technical Improvements: - Organized test suite with comprehensive coverage - Repository cleanup and archive structure - Enhanced logging and progress reporting - Version management and release tagging 📚 Documentation & Testing: - Complete duplicate handling documentation - Updated user guides and API documentation with CLI options - Fixed TSV example formatting in usage documentation - Comprehensive test suite with verification scripts This release improves reliability, user experience, and maintainability.