All deployments

Ensure markdown_with_attachments returns an empty string for blank content.
Add redirection for blogtoemail.com while removing the previous route.

Add project description and contact email display with improved styling.

Introduce a web manifest for better PWA support and include the
canvas-confetti library for enhanced visual effects.

Implement user authentication via Omniauth, allowing sign in with Google
and GitHub accounts. Update user model and views accordingly.

Upgrade Ruby and Rails versions in Gemfile and adjust deployment actions.

Update actions/checkout and ruby/setup-ruby to latest versions for improved performance and security.

Enhance security by adding 'nofollow' to external project URLs.

Implement LLMS controller with index and full actions, and create views
for displaying projects and blog posts in text format.