feat: Update environment configuration files and enhance .gitignore to prevent committing sensitive data, while improving documentation in .env.example for better clarity

feat: Redesign landing page with new layout, enhanced visuals, and updated messaging to improve user engagement and clarity

feat: Update login and signup pages with new imagery, improved messaging, and enhanced error handling for a better user experience

feat: Revamp login page design and improve error messaging for better user experience

feat: Update authentication flow to redirect users to the app after login and signup, and add new dependencies for improved functionality

feat: Integrate Markdown parsing for digest content display and update SVG assets for improved visual design

feat: Enhance weekly digest generation with fallback mechanism and error handling for improved user experience

feat: Implement email and password sign-in functionality with loading states and error handling in login and signup components

feat: Add environment variable validation and improve CORS configuration for enhanced security and flexibility

feat: Improve API error handling and enhance environment variable loading for better configuration management

fix: Update environment variable usage for improved configuration consistency and error logging in authentication handling

feat: Refactor authentication handling and environment configuration for improved session management and deployment flexibility

feat: Enhance social sign-in process by adding manual navigation and error handling for improved user experience

feat: Update environment configuration and enhance OAuth URL handling for better deployment flexibility

feat: Enhance authentication and API integration with internal secret management and new logout functionality in frontend components