- Add 12 section headers for better code navigation
- Create 7 common helper functions (backup, directories, networks, etc.)
- Break down monolithic functions: setup_ssh_key_to_core (140→31 lines), main (213→70 lines)
- Consolidate redundant backup operations using common_backup()
- Consolidate directory/network creation with common helpers
- Extract menu handling and completion display into separate functions
- Improve visual consistency with ║-bordered output formatting
- Suppress verbose output from SSH and deployment operations
- Add deployment-ready feedback to install-prerequisites.sh
Total functions increased from ~50 to 58 for better modularity
Script now 2,824 lines with clearer structure and reduced redundancy
