- Updated features list with navigation bar, HR notifications, and security features
- Added navigation and HR features sections with usage examples
- Updated file structure to show modular app/ package
- Changed running instructions from app.py to run.py
- Added mailcatcher as default SMTP configuration
- Included testing instructions and architecture documentation
- Updated data.yaml example with status and submitted_at fields
- Added comprehensive Security Features section (CSRF, rate limiting)
- Added Architecture section explaining factory pattern and modular structure
- Enhanced Troubleshooting section with mailcatcher, testing, and navigation issues
- Updated technology stack with all dependencies and versions