fix(rectification): replay answered probes after evidence rescore (BUG-587, BUG-588)

Carry answered probe defs into the new candidate set, replay them by minute, and announce range changes on evidence turns.

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

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

@@ -1,6 +1,6 @@
 "use client";
 
-import { useCallback, useEffect, useId, useLayoutEffect, useRef, useState } from "react";
+import { startTransition, useCallback, useEffect, useId, useLayoutEffect, useRef, useState } from "react";
 import { useQueuedMessage } from "@/hooks/use-queued-message";
 import { appendQueuedText, queuedDraftSettleAction } from "@/lib/queued-draft";
 import { createPortal } from "react-dom";
@@ -635,7 +635,9 @@ export function RectificationAgenticChat(props: RectificationAgenticChatProps) {
     }
   }, []);
 
-  const loadCaseSnapshot = useCallback(async (): Promise<{
+  const loadCaseSnapshot = useCallback(async (
+    mergeMessages?: (turns: readonly unknown[]) => void,
+  ): Promise<{
     question: CurrentQuestionModel | null;
     turns: readonly unknown[];
   } | null | undefined> => {
@@ -650,10 +652,14 @@ export function RectificationAgenticChat(props: RectificationAgenticChatProps) {
       if (!response.ok) return undefined;
       const payload = await response.json().catch(() => null);
       if (controller.signal.aborted) return undefined;
-      applyCaseSnapshot(payload);
+      const turns = snapshotTurns(payload);
+      startTransition(() => {
+        applyCaseSnapshot(payload);
+        mergeMessages?.(turns);
+      });
       return {
         question: currentQuestionFromSnapshot(payload?.current_question),
-        turns: snapshotTurns(payload),
+        turns,
       };
     } catch {
       // Snapshot refresh is best-effort; the durable Case remains on the server.
@@ -960,10 +966,11 @@ export function RectificationAgenticChat(props: RectificationAgenticChatProps) {
       }
       if (succeeded) {
         runOutcome = "succeeded";
-        const snapshot = await loadCaseSnapshot();
-        if (snapshot?.turns.length) {
-          setMessages((current) => mergeTurnQuestions(current, snapshot.turns));
-        }
+        await loadCaseSnapshot((turns) => {
+          if (turns.length) {
+            setMessages((current) => mergeTurnQuestions(current, turns));
+          }
+        });
         onMessagesChange?.([
           ...(action === "message" ? [{ role: "user" as const, text: trimmed }] : []),
           { role: "assistant", text: parsed.text },
@@ -1121,15 +1128,11 @@ export function RectificationAgenticChat(props: RectificationAgenticChatProps) {
         : "";
       if (payloadNextActionId) setNextUserActionId(payloadNextActionId);
       onCompleted?.();
-      const snapshot = await loadCaseSnapshot();
-      const turns = snapshot?.turns ?? [];
-      if (willContinue) {
-        // The follow-up turn continues on the row already in place: no removed
-        // row, no effect hop, and `busy` never drops in between (so the next
-        // card cannot flash before the turn hides it).
-        setMessages((current) => mergeTurnQuestions(current, turns));
-        await send("read_only", "", { reuseAssistantRenderKey: assistantRenderKey, label: recordingLabel });
-      } else {
+      await loadCaseSnapshot((turns) => {
+        if (willContinue) {
+          setMessages((current) => mergeTurnQuestions(current, turns));
+          return;
+        }
         const narration = typeof payload?.narration === "string" && payload.narration.trim()
           ? payload.narration.trim()
           : "已记录你的选择。";
@@ -1151,6 +1154,16 @@ export function RectificationAgenticChat(props: RectificationAgenticChatProps) {
             },
           ];
         });
+      });
+      if (willContinue) {
+        // The follow-up turn continues on the row already in place: no removed
+        // row, no effect hop, and `busy` never drops in between (so the next
+        // card cannot flash before the turn hides it).
+        await send("read_only", "", { reuseAssistantRenderKey: assistantRenderKey, label: recordingLabel });
+      } else {
+        const narration = typeof payload?.narration === "string" && payload.narration.trim()
+          ? payload.narration.trim()
+          : "已记录你的选择。";
         onMessagesChange?.([
           { role: "assistant", text: narration },
         ]);
@@ -1400,6 +1413,8 @@ export function RectificationAgenticChat(props: RectificationAgenticChatProps) {
     ?? (canOfferCards && !candidateResult?.selectedTime ? latestSettledAssistant?.renderKey : undefined);
   const showSelectionCards = Boolean(
     candidateResult
+    && caseSnapshotLoaded
+    && !busy
     && selectionCardMessageKey
     && (canOfferCards || Boolean(candidateResult.selectedTime))
     && !messages.some((message) => (