fix(rectification): continue after structured choices

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

@@ -50,6 +50,7 @@ import { isNearBottom, shouldShowJumpToLatest } from "@/lib/rectification-sticky
 import {
   CHOICE_ACTION,
   STOP_ACTION,
+  shouldContinueAfterStructuredChoice,
   stableChoiceActionKey,
   type ChoiceOptionId,
 } from "@/lib/rectification-agentic/v9/choice-action";
@@ -285,6 +286,7 @@ export function RectificationAgenticChat(props: RectificationAgenticChatProps) {
   const [copiedMessageKey, setCopiedMessageKey] = useState<string | null>(null);
   const [regeneratingMessageKey, setRegeneratingMessageKey] = useState<string | null>(null);
   const [choiceNonce, setChoiceNonce] = useState(0);
+  const choiceContinuationPending = useRef(false);
   const conversation = useRef<HTMLElement>(null);
   const workspace = useRef<HTMLDivElement>(null);
   const composer = useRef<HTMLTextAreaElement>(null);
@@ -428,7 +430,7 @@ export function RectificationAgenticChat(props: RectificationAgenticChatProps) {
     return () => controller.abort();
   }, [applyCaseSnapshot, caseId, sessionId]);
 
-  const send = useCallback(async (action: "opening" | "message", messageText: string) => {
+  const send = useCallback(async (action: "opening" | "message" | "read_only", messageText: string) => {
     const trimmed = action === "message" ? messageText.trim() : "";
     if ((action === "message" && !trimmed) || busy || readonly) return;
     setError("");
@@ -472,7 +474,7 @@ export function RectificationAgenticChat(props: RectificationAgenticChatProps) {
           action,
           modelId: selectedModelId,
           ...(action === "message" ? { message: trimmed } : {}),
-          origin: "typed",
+          origin: action === "read_only" ? "choice_click" : "typed",
           clientActionId: requestId,
         }),
       });
@@ -805,7 +807,7 @@ export function RectificationAgenticChat(props: RectificationAgenticChatProps) {
       }
       const narration = typeof payload?.narration === "string" && payload.narration.trim()
         ? payload.narration.trim()
-        : "已记录你的选择。正在准备下一步。";
+        : "已记录你的选择。";
       setMessages((current) => current.map((message) => message.renderKey === assistantRenderKey
         ? {
           ...message,
@@ -820,6 +822,9 @@ export function RectificationAgenticChat(props: RectificationAgenticChatProps) {
       ]);
       onCompleted?.();
       await loadCaseSnapshot();
+      if (shouldContinueAfterStructuredChoice(payload?.nextAction)) {
+        choiceContinuationPending.current = true;
+      }
     } catch {
       setMessages((current) => current.filter((message) => (
         message.renderKey !== userRenderKey && message.renderKey !== assistantRenderKey
@@ -843,6 +848,12 @@ export function RectificationAgenticChat(props: RectificationAgenticChatProps) {
     setPending,
   ]);
 
+  useEffect(() => {
+    if (!choiceContinuationPending.current || busy || readonly) return;
+    choiceContinuationPending.current = false;
+    void send("read_only", "");
+  }, [busy, readonly, send]);
+
   useEffect(() => {
     if (initialTurns.length > 0) {
       if (shouldStartOpening) onOpeningConsumed?.();