QA scan found 4 library files with functions that weren't exported,
making them unavailable in subshells and nested calls.
Added export statements for:
- lib/attack-signatures.sh: 3 functions
- lib/http-attack-analyzer.sh: 5 functions
- lib/email-functions.sh: 18 functions
- lib/rate-anomaly-detector.sh: 9 functions
Total: 35 functions now properly exported
This ensures functions are available when libraries are sourced by
scripts that spawn subshells or use process substitution.
cschantz
682bd69cf8