add diagnostics meta

js/example/ink.tsx

@@ -38,6 +38,7 @@ function App() {
   const [state, setState] = useState(initial)
   const [input, setInput] = useState("")
 
+
   useEffect(() => {
     fetch("http://localhost:16713/event")
       .then(stream => {

js/src/tool/edit.ts

@@ -132,6 +132,9 @@ export const edit = Tool.define({
     }
 
     return {
+      metadata: {
+        diagnostics,
+      },
       output,
     };
   },