fix(rectification): keep choice options and scoring on the server

Agent set-focus was writing or dropping choice schema, so probes never scored. Force server-owned options, fail closed when focus list RPC errors, and require the probe year in spokenPrompt.

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

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

@@ -120,6 +120,12 @@ function currentQuestionFromSnapshot(value: unknown): CurrentQuestionModel | nul
   };
 }
 
+function questionSourceFromSnapshot(value: unknown): "focus" | "unavailable" | null {
+  if (value === "unavailable") return "unavailable";
+  if (value === "focus") return "focus";
+  return null;
+}
+
 function RectificationCandidateCards({
   result,
   acceptingCandidateId,
@@ -380,6 +386,7 @@ export function RectificationAgenticChat(props: RectificationAgenticChatProps) {
   const [candidateResult, setCandidateResult] = useState<CandidateResult>(null);
   const [choiceCard, setChoiceCard] = useState<ChoiceCardModel | null>(null);
   const [currentQuestion, setCurrentQuestion] = useState<CurrentQuestionModel | null>(null);
+  const [questionSource, setQuestionSource] = useState<"focus" | "unavailable" | null>(null);
   const [caseStatus, setCaseStatus] = useState<RectificationCaseStatus | null>(null);
   const [caseSnapshotLoaded, setCaseSnapshotLoaded] = useState(false);
   const [acceptingCandidateId, setAcceptingCandidateId] = useState<string | null>(null);
@@ -447,6 +454,7 @@ export function RectificationAgenticChat(props: RectificationAgenticChatProps) {
     current_question?: unknown;
     choice_card?: unknown;
     turns?: unknown;
+    question_source?: unknown;
     case?: {
       status?: unknown;
       accepted_time?: unknown;
@@ -464,6 +472,7 @@ export function RectificationAgenticChat(props: RectificationAgenticChatProps) {
     const confirmedTime = typeof payload.case?.confirmed_time === "string" ? payload.case.confirmed_time : null;
     setCandidateResult(nextCandidate);
     setCurrentQuestion(nextQuestion);
+    setQuestionSource(questionSourceFromSnapshot(payload.question_source));
     setChoiceCard(nextChoice);
     setCaseStatus(nextCaseStatus);
     setCaseSnapshotLoaded(true);
@@ -1139,12 +1148,14 @@ export function RectificationAgenticChat(props: RectificationAgenticChatProps) {
     && message.question.focus_id === currentQuestion.focus_id
     && !questionIsAnswered(message.question)
   ));
+  const questionLoadFailed = questionSource === "unavailable";
   const showMissingQuestion = Boolean(
     caseSnapshotLoaded
     && resumableCase
     && !readonly
     && !busy
-    && currentQuestion === null,
+    && currentQuestion === null
+    && !questionLoadFailed,
   );
   const showUnavailableQuestion = Boolean(
     caseSnapshotLoaded
@@ -1152,7 +1163,15 @@ export function RectificationAgenticChat(props: RectificationAgenticChatProps) {
     && !readonly
     && !busy
     && currentQuestion !== null
-    && !liveQuestionOnMessages,
+    && !liveQuestionOnMessages
+    && !questionLoadFailed,
+  );
+  const showQuestionLoadFailed = Boolean(
+    caseSnapshotLoaded
+    && resumableCase
+    && !readonly
+    && !busy
+    && questionLoadFailed,
   );
   const canSend = !busy && !readonly && !regeneratingMessageKey;
 
@@ -1321,11 +1340,13 @@ export function RectificationAgenticChat(props: RectificationAgenticChatProps) {
           {!conversationAnchor.anchored && (
             <JumpToLatestButton onClick={conversationAnchor.anchorToLatest} />
           )}
-          {(showMissingQuestion || showUnavailableQuestion) && (
+          {(showMissingQuestion || showUnavailableQuestion || showQuestionLoadFailed) && (
             <p className="rectification-composer-status" role="status">
-              {showMissingQuestion
-                ? "当前没有可回答的问题，正在等待服务端更新。"
-                : "当前问题暂时无法显示，请等待服务端更新。"}
+              {showQuestionLoadFailed
+                ? "题目加载失败，请刷新。"
+                : showMissingQuestion
+                  ? "当前没有可回答的问题，正在等待服务端更新。"
+                  : "当前问题暂时无法显示，请等待服务端更新。"}
             </p>
           )}
           <ChatComposer