fix: preserve conversation after update

components/reasoning-workspace.jsx

@@ -365,6 +365,7 @@ export default function ReasoningWorkspace({
   answer,
   setAnswer,
   onAnswerSubmit,
+  lastSubmittedAnswer,
 }) {
   const { elapsed: startElapsed, currentMessage: startMsg } = useLoadingStatus(
     INITIAL_MESSAGES,
@@ -376,11 +377,14 @@ export default function ReasoningWorkspace({
     updateStatus === "loading"
   );
 
+  const isUpdating = updateStatus === "loading";
+  const hasSelectedQuestion = Boolean(result?.selectedQuestion);
+
   const canAnswer =
     status === "success" &&
-    updateStatus === "idle" &&
+    !isUpdating &&
     Boolean(result?.situationGraph) &&
-    Boolean(result?.selectedQuestion);
+    hasSelectedQuestion;
 
   const selectedQ = result?.selectedQuestion ?? null;
   const graph = result?.situationGraph ?? null;
@@ -425,7 +429,7 @@ export default function ReasoningWorkspace({
         <>
           {/* ── Post-update acknowledgement ─────────────── */}
           {updateStatus === "success" && graph && (
-            <UpdateAcknowledgement answer={answer} updateResult={result} />
+            <UpdateAcknowledgement answer={lastSubmittedAnswer} updateResult={result} />
           )}
 
           {/* Completion state (only when there is no next question and nothing remains) */}

components/scenario-form.jsx

@@ -188,6 +188,7 @@ export default function ScenarioForm() {
   const [updateStatus, setUpdateStatus] = useState("idle"); // idle | loading | error | success
   const [updateError, setUpdateError] = useState(null);
   const [updateResult, setUpdateResult] = useState(null);
+  const [lastSubmittedAnswer, setLastSubmittedAnswer] = useState("");
   const textareaRef = useRef(null);
 
   const { elapsed: startElapsed, currentMessage: startMsg } = useLoadingStatus(
@@ -206,6 +207,8 @@ export default function ScenarioForm() {
     setResult(null);
     setAnswer("");
     setUpdateStatus("idle");
+    setUpdateResult(null);
+    setLastSubmittedAnswer("");
     setUpdateError(null);
     setResult(null);
     setUpdateResult(null);
@@ -240,6 +243,7 @@ export default function ScenarioForm() {
 
     setUpdateStatus("loading");
     setUpdateError(null);
+    setLastSubmittedAnswer(answer.trim());
 
     const submission = await submitAnswerForUpdateCase(fetch, {
       situationGraph: result?.situationGraph,
@@ -337,6 +341,7 @@ export default function ScenarioForm() {
           answer={answer}
           setAnswer={setAnswer}
           onAnswerSubmit={handleUpdate}
+          lastSubmittedAnswer={lastSubmittedAnswer}
         />
       )}