💄 Update welcome page styling and simplify settings header

💄 Update about pages with improved descriptions and empty state 🎨 Reorder profile background icons and update icon selection 🎨 Add birth date and enhance profiles page design with gradients and icons ♻️ Simplify milestone routes by removing author nesting ✨ Enhance auto-save functionality for entry forms Implement auto-save feature with visual indicators for improved user experience.