Error in Playground Single Agent

Using the current main branch and using the Playground Single Agent tap (process and multi agent without any issue):

**Error: Objects are not valid as a React child (found: object with keys {ai_model_id, metadata, content_type, role, name, items, encoding, finish_reason, status}). If you meant to render a collection of children, use an array instead.**

at throwOnInvalidObjectType (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/compiled/react-dom/cjs/react-dom-client.development.js:6632:13)
at reconcileChildFibersImpl (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/compiled/react-dom/cjs/react-dom-client.development.js:7567:11)
at eval (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/compiled/react-dom/cjs/react-dom-client.development.js:7607:33)
at reconcileChildren (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/compiled/react-dom/cjs/react-dom-client.development.js:8048:13)
at beginWork (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/compiled/react-dom/cjs/react-dom-client.development.js:10216:13)
at runWithFiberInDEV (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/compiled/react-dom/cjs/react-dom-client.development.js:1511:30)
at performUnitOfWork (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/compiled/react-dom/cjs/react-dom-client.development.js:15120:22)
at workLoopSync (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/compiled/react-dom/cjs/react-dom-client.development.js:14944:41)
at renderRootSync (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/compiled/react-dom/cjs/react-dom-client.development.js:14924:11)
at performWorkOnRoot (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/compiled/react-dom/cjs/react-dom-client.development.js:14454:44)
at performWorkOnRootViaSchedulerTask (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/compiled/react-dom/cjs/react-dom-client.development.js:16275:7)
at MessagePort.performWorkUntilDeadline (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/compiled/scheduler/cjs/scheduler.development.js:45:48)
at ClientPageRoot (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/client/components/client-page.js:20:50)

Reproduce el error desde el tap de Playground Single Agent en la rama main actual e inspecciona el punto de entrada del frontend que renderiza su respuesta. Sigue el objeto que contiene ai_model_id, metadata, content_type, role, name, items, encoding, finish_reason y status para identificar dónde se renderiza como hijo de React. Se considera terminado cuando el playground de Single Agent se renderiza correctamente sin este error, mientras las rutas de process y multi-agent siguen funcionando.

Escrito por el modelo de indexación a partir del texto del issue.