refactor: replace custom links with Button component in CallToAction components

- Replaced custom <a> tag with Button component (as="a", variant="link", color="cyan") in agents CallToAction
- Replaced Link component with Button component (variant="link", color="cyan") in network CallToAction
- Removed unused Link import from network CallToAction
- Standardized link styling across CallToAction components for consistency

src/pages/network/CallToAction.tsx

@@ -1,6 +1,5 @@
 "use client";
 
-import { Link } from 'react-router-dom';
 import { Container } from '@/components/Container'
 import { Button } from "@/components/Button";
 
@@ -66,9 +65,9 @@ Use the network to link environments, deploy workloads, or host nodes to strengt
                 Deploy in Cloud
               </Button>
 
-              <Link to="/nodes" className="text-cyan-400 hover:text-cyan-300 transition-colors">
+              <Button to="/nodes" variant="link" color="cyan">
                 Host a Node &rarr;
-              </Link>
+              </Button>
             </div>
           </div>
         </Container>