refactor: reorder compute page sections and simplify use cases heading

- Moved ComputeArchitecture and ComputeUseCases sections earlier in the page flow
- Updated use cases section heading to be more concise
- Removed descriptive paragraph from use cases section

src/pages/compute/ComputeUseCases.tsx

@@ -28,13 +28,8 @@ export function ComputeUseCases() {
             Use Cases
           </Eyebrow>
           <SectionHeader as="h2" color="light" className="mt-6">
-            Purpose-built for reproducibility, security, and scale.
+           Built for Serious Workloads
           </SectionHeader>
-          <P color="lightSecondary" className="mt-6">
-            From sovereign AI training loops to globally distributed
-            applications, Mycelium Compute keeps environments verifiable and
-            self-orchestrating so teams can focus on building.
-          </P>
         </div>
 
         <div className="mx-auto mt-16 max-w-4xl space-y-6">