- Add allow dead_code to unused helper function
- Remove redundant PID assertion in macOS test
- All clippy checks pass with -D warnings
- All tests passing (33/33)
Fixed issues:
- Corrected Welford's online algorithm for variance calculation
- Added NaN and infinity guards to prevent invalid calculations
- Added Serialize/Deserialize traits to AnomalyScore and ProcessProfile
Added functionality:
- Profile persistence with save_profiles() and load_profiles()
- Global baseline computation from all process profiles
- Profile cleanup method to remove stale profiles
- Additional utility methods for profile management
