Add MVP operational readiness checks

app/dashboard/settings/page.tsx

@@ -1,10 +1,6 @@
-import { DashboardPlaceholderPage } from "@/components/dashboard-placeholder-page";
+import { OperationsReadiness } from "@/components/settings/operations-readiness";
+import { getIntegrationReadiness } from "@/lib/operational-readiness";
 
 export default function SettingsPage() {
-  return (
-    <DashboardPlaceholderPage
-      description="Provider-Status, Secrets-Hinweise und Workspace-Einstellungen folgen mit den Integrationen."
-      title="Einstellungen"
-    />
-  );
+  return <OperationsReadiness rows={getIntegrationReadiness(process.env)} />;
 }