Update landing page title and enhance description for clarity and detail

Author: Andrey Cheptsov

docs/index.md

@@ -1,6 +1,6 @@
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 template: home.html
-title: AI container orchestration for AI teams
+title: Agentic orchestration for AI infrastructure
 hide:
    - navigation
    - toc

docs/overrides/home.html

@@ -291,7 +291,9 @@
                 <h1 class="glitch" data-text="Agentic orchestration" style="min-height: 2.4em;">Agentic orchestration<br><span id="typed" style="white-space: nowrap;"></span></h1>
 
                 <p>
-                    <span class="highlight">dstack</span> is an open-source control plane for agents and engineers to provision compute and run training, inference, <!--and sandboxes--> across GPU vendors, clouds, Kubernetes, and bare-metal clusters.
+                    <span class="highlight">dstack</span> is an open-source control plane for agents and engineers to provision compute and run training, inference, and sandboxes across 
+                    <span class="highlight">NVIDIA</span>, <span class="highlight">AMD</span>, 
+                    <span class="highlight">TPU</span>, and <span class="highlight"></span>Tenstorrent</span> GPUs—on clouds, Kubernetes, and bare-metal clusters.
                 </p>
             </div>