This commit applies the critical fixes found during beta testing:
1. FIX: Show installation guide instead of exiting when no scanners detected
- Heredoc was exiting with code 1 instead of showing helpful installation instructions
- Changed to display full installation guide and exit gracefully with code 0
- Users now see 'here's how to install' instead of just error
2. FIX: Add missing color variable definitions to generator
- Generator script was using CYAN, RED, YELLOW, GREEN, NC colors
- But these variables were never defined in the generator itself
- Added color variable definitions at script start
- Menu now displays with proper colors
3. FIX: Add print_banner to required functions validation
- show_scan_menu() calls print_banner but it wasn't validated
- If common-functions.sh failed to source, menu would crash
- Added print_banner to validate_required_functions()
All fixes ensure the malware scanner menu displays properly even with no
scanners installed, and provides helpful guidance for installation.
cschantz
9942296714