- Add Jest testing framework configuration
- Add test files for services, types, and utilities
- Update package.json with Jest dependencies and test scripts
- Enhance pre-commit checks to include testing
- Add proper environment validation and error handling in mailgun service
- Add comprehensive TypeScript types to E2E test helpers
- Improve medication, auth, modal, and wait helper classes with proper typing
- Enhance test data with readonly type assertions for better immutability
- Update integration tests with better error handling and assertions
- Improve Playwright type definitions for better IDE support
- Add environment variable support to manual test scripts