fix(rectification): persist the collect stem on the same assistant turn

The live question slot disappeared on refresh because it was never written to assistant_message. Attach the current collect_spoken prompt to that turn before finalize so chat history keeps it.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/components/rectification-agentic-chat.tsx

@@ -57,6 +57,7 @@ import {
   type ChoiceOptionId,
 } from "@/lib/rectification-agentic/v9/choice-action";
 import { isRectificationCaseStatus, isResumableStatus, type RectificationCaseStatus } from "@/lib/rectification-agentic/v9/case-status";
+import { composeCollectSpokenAssistantText } from "@/lib/rectification-agentic/v9/collect-prompt";
 import {
   isPersistedFocusId,
   parseRectificationChoiceCard,
@@ -1047,8 +1048,15 @@ export function RectificationAgenticChat(props: RectificationAgenticChatProps) {
   const collectSpokenPrompt = currentQuestion?.kind === "collect_spoken"
     ? currentQuestion.prompt
     : null;
+  const latestCollectBody = latestSettledAssistant?.text ?? "";
+  const collectStemAlreadyInLatestBody = Boolean(
+    collectSpokenPrompt
+    && latestSettledAssistant
+    && composeCollectSpokenAssistantText(latestCollectBody, collectSpokenPrompt) === latestCollectBody.trim(),
+  );
   const showCollectSpokenPrompt = Boolean(
     collectSpokenPrompt
+    && !collectStemAlreadyInLatestBody
     && !showLiveChoiceCard
     && !readonly
     && !busy
@@ -1071,6 +1079,12 @@ export function RectificationAgenticChat(props: RectificationAgenticChatProps) {
     && ((currentQuestion.kind === "choice" && !choiceCard)
       || (currentQuestion.kind === "collect_spoken" && !collectSpokenPrompt)),
   );
+  const showQuestionSlot = Boolean(
+    showLiveChoiceCard
+    || showCollectSpokenPrompt
+    || showMissingQuestion
+    || showUnavailableQuestion,
+  );
   const canSend = !busy && !readonly && !regeneratingMessageKey;
 
   function submitChoice(key: ChoiceKey) {
@@ -1193,7 +1207,7 @@ export function RectificationAgenticChat(props: RectificationAgenticChatProps) {
                     onStop={submitStop}
                   />
                 )}
-                {isLatestMessage && (
+                {isLatestMessage && showQuestionSlot && (
                   <section className="rectification-question-slot" aria-label="当前问题">
                     {showLiveChoiceCard && choiceCard && (
                       <RectificationChoiceCard
@@ -1226,7 +1240,7 @@ export function RectificationAgenticChat(props: RectificationAgenticChatProps) {
               </div>
             );
           })}
-          {messages.length === 0 && (
+          {messages.length === 0 && showQuestionSlot && (
           <section className="rectification-question-slot" aria-label="当前问题">
             {showLiveChoiceCard && choiceCard && (
               <RectificationChoiceCard
@@ -1294,7 +1308,7 @@ export function RectificationAgenticChat(props: RectificationAgenticChatProps) {
               ? "该校正已结束，只能查看历史；需要再次校正请新建。"
               : showLiveChoiceCard
                 ? "点上面的选项即可；想补一句细节再写"
-                : showCollectSpokenPrompt
+                : showCollectSpokenPrompt || collectStemAlreadyInLatestBody
                   ? "请回答上面的问题…"
                   : "继续说你记得的人生经历，或回答刚才的问题…"}
             maxLength={RECTIFICATION_COMPOSER_MAX_LENGTH}