refactor: improve punctuation and grammar consistency across components

- Replaced em dashes with commas for better readability in descriptions
- Standardized punctuation in aria-labels (changed "—" to ",")
- Removed unnecessary em dashes in favor of commas or removed punctuation
- Fixed inconsistent spacing around punctuation marks
- Improved sentence flow in multiple component descriptions

src/pages/gpu/GpuArchitecture.tsx

@@ -40,7 +40,7 @@ export function GpuArchitecture() {
               Sovereign Compute Nodes
             </h3>
             <p className="mt-2 text-gray-600 max-w-2xl">
-              GPUs run only on hardware you control — eliminating reliance on centralized clouds.
+              GPUs run only on hardware you control, eliminating reliance on centralized clouds.
             </p>
             <div className="mt-8 h-px w-full bg-cyan-500/50" />
           </div>
@@ -52,7 +52,7 @@ export function GpuArchitecture() {
               Encrypted Mesh Networking
             </h3>
             <p className="mt-2 text-gray-600 max-w-2xl">
-              Nodes form private, encrypted tunnels to workloads — no public exposure required.
+              Nodes form private, encrypted tunnels to workloads, no public exposure required.
             </p>
             <div className="mt-8 h-px w-full bg-cyan-500/50" />
           </div>