- Extract complex ATS prefill logic from PrefillFieldsHelper into dedicated AtsPrefill service
- Create modular service objects: FieldExtractor, FieldMapper, ValueMerger, and CacheManager
- Implement proper caching strategy with Rails.cache for performance optimization
- Add comprehensive test coverage for all new service components
- Maintain backward compatibility through facade methods in PrefillFieldsHelper
- Improve security by validating field name patterns and sanitizing inputs
- Enhance performance with optimized field lookup caching
BREAKING CHANGE: PrefillFieldsHelper now delegates to AtsPrefill service layer. Direct usage of helper methods remains unchanged, but internal implementation has been refactored.