# Changelog - Arnold Wender Digital Profile Hub

All notable changes to this site are documented here. This project adheres to semantic versioning principles and privacy-first development practices.

## [2.1.1] - 2025-10-24

### Security
- Updated Astro from 5.13.2 to 5.15.1 (fixes X-Forwarded-Host reflection vulnerability)
- Updated devalue from 5.1.1 to 5.4.2 (fixes prototype pollution vulnerability - High severity)
- Updated Vite from 6.3.5 to 6.4.1 (fixes multiple security issues):
  - server.fs.deny bypass via backslash on Windows
  - Middleware serving files with same name in public directory
  - server.fs settings not applied to HTML files
- All npm dependencies audited and updated to latest secure versions
- Zero vulnerabilities remaining (verified with npm audit)

### Technical
- Optimized dependency tree (removed 18 redundant packages, added 1 new)
- Updated 56 packages for improved performance and compatibility
- Build verification completed successfully

## [2.1.0] - 2025-10-23

### Added
- RFC 9116 compliant security.txt in .well-known directory
- Web App Manifest (manifest.json) for PWA capabilities
- Comprehensive sitemap.xml with all site pages
- Microsoft browserconfig.xml for pinned site tiles
- Developer easter eggs: humans.txt, colophon.html, credits.txt
- Cultural files: coffee.txt, now.txt, purpose.txt
- Plain-text governance files: privacy.txt, accessibility.txt
- Extended .github/copilot-instructions.md for AI agents

### Improved
- Enhanced structured data with additional Schema.org entities
- Expanded accessibility features with roving tabindex
- Better keyboard navigation with comprehensive skip links
- Mobile-first responsive design improvements

### Technical
- Upgraded to Astro v5.2.5
- Implemented CSS custom properties for better maintainability
- Added comprehensive focus management for screen readers
- Optimized font loading with variable font preloading

## [2.0.0] - 2025-01-15

### Major Release - Complete Redesign
- Migrated from custom HTML to Astro static site generator
- Implemented comprehensive WCAG 2.1 AA accessibility compliance
- Added complete German legal compliance (Impressum, Datenschutzerklärung)
- Introduced advanced Schema.org structured data markup
- Achieved 100/100 Lighthouse scores across all metrics

### Added
- Mobile-first responsive design with 2-row social icon layout
- GDPR-compliant cookie consent system
- Advanced keyboard navigation with skip links
- Comprehensive ARIA landmark structure
- Professional entity recognition in structured data
- Local font serving for privacy (Onest, Inter variable fonts)
- Animated gradient background with CSS-only animations

### Privacy & Legal
- Complete GDPR/DSGVO compliance implementation
- DSA (Digital Services Act) compliance
- EU-US Data Privacy Framework alignment
- Zero external tracking or analytics
- Local resource serving for enhanced privacy

### Performance
- Core Web Vitals optimization
- CSS inlining and compression
- Image optimization with Sharp
- Resource preloading and caching headers
- Minimal JavaScript footprint

## [1.2.0] - 2024-12-01

### Added
- Enhanced social media integration
- Improved mobile responsiveness
- Basic accessibility improvements
- Initial structured data implementation

### Fixed
- Cross-browser compatibility issues
- Mobile touch target sizes
- Focus indicator visibility

## [1.1.0] - 2024-10-15

### Added
- Professional project showcase section
- Enhanced typography with system fonts
- Basic responsive design implementation
- Contact information integration

### Improved
- Loading performance optimizations
- Image asset optimization
- SEO meta tag implementation

## [1.0.0] - 2024-08-01

### Initial Release
- Basic link-in-bio functionality
- Simple responsive layout
- Essential social media links
- Contact information display
- Basic HTML/CSS implementation

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## Release Notes Format

This changelog follows the [Keep a Changelog](https://keepachangelog.com/) format and uses semantic versioning.

### Version Number Meaning
- **Major (X.0.0):** Breaking changes, significant redesigns
- **Minor (0.X.0):** New features, enhancements, additions
- **Patch (0.0.X):** Bug fixes, minor improvements, corrections

### Change Categories
- **Added:** New features and functionality
- **Changed:** Modifications to existing features
- **Deprecated:** Features that will be removed
- **Removed:** Features that have been deleted
- **Fixed:** Bug fixes and corrections
- **Security:** Security-related improvements

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**Site URL:** https://arnoldwender.com/  
**Repository:** https://github.com/arnoldwender/arnoldwender-link-bio-2025  
**Last updated:** October 23, 2025