* chore: remove all references to PayloadCMS
* fix: nextjs landing utils
* feat: refactor community, features, hero, learning resources, and testimonials components to use external JSON data
* fix:remove hero logo box
* fix: remove unused image in public
* fix: change logo.png to logo.webp
* fix: update button styles for improved visibility
* chore: restructure component organization
* fix: update import path for global styles in layout component
* fix: adjust alignment of hero stats section for better layout
* fix: update testimonials placeholder sample data
* fix: update header component to use router for navigation and add signin page
