Detail pages: rename the 'Runs' field to 'Launch' (matches the launcher concept)

The field showing a deployment's launcher + target is now labelled 'Launch'
(consistent with launcher/manager vocabulary) on ServiceDetail and the Service/
Job/Create field editors.

app/src/pages/ServiceDetail.tsx

@@ -116,7 +116,7 @@ export function ServiceDetailPage() {
           )}
           {deployment.launcher && (
             <>
-              <span className="text-[var(--muted)]">Runs</span>
+              <span className="text-[var(--muted)]">Launch</span>
               <span className="flex items-center gap-1 min-w-0">
                 <Terminal size={12} className="shrink-0" />
                 {launcherLabel(deployment.launcher)}