refactor: update CTA buttons with external links and navigation improvements

- Changed "Deploy a Model" button in agents CallToAction to external link (myceliumcloud.tf) with target="_blank"
- Updated "Host a Node" button path from /host to /nodes in agents and cloud CallToAction
- Changed cloud CallToAction "Start Deploying" button to external link with target="_blank"
- Updated CloudHeroNew buttons to external links for myceliumcloud.tf and docs
- Removed onGetStartedClick handler from CloudHeroNew in

src/pages/home/HomeAurora.tsx

@@ -1,7 +1,7 @@
 import { H3, H5, Eyebrow } from "@/components/Texts"
 import { Button } from "@/components/Button"
 
-export function HomeAurora({ onGetStartedClick }: { onGetStartedClick: () => void }) {
+export function HomeAurora() {
   return (
     <div className="px-4">
       {/* Boxed container */}
@@ -24,13 +24,13 @@ export function HomeAurora({ onGetStartedClick }: { onGetStartedClick: () => voi
 
             <div className="mt-8 flex items-center gap-x-6">
               <Button
+                to="/nodes"
                 variant="solid"
                 color="cyan"
-                onClick={onGetStartedClick}
               >
                 Start Hosting
               </Button>
-              <Button to="#" variant="outline">
+              <Button to="/cloud" variant="outline">
                 Deploy in Cloud →
               </Button>
             </div>