fix：饼图对重新分析的影响

src/pages/Chat/components/ChatItem/ChatAnswerParser.tsx

-import React, { useEffect, useRef, useState } from 'react'
+import React, { useEffect, useState } from 'react'
 import { Chip } from '@heroui/react'
 import { ChatAnswerAttachment } from './ChatAnswerAttchment'
 import { ChatAnswerOperate } from './ChatAnswerOperate'
@@ -43,10 +43,11 @@ function CheckIcon({ ...props }) {
 export const ChatAnswerParser: React.FC<ChatAnswerParserProps> = ({ isLastAnswer, onTyping, onComplate, answer, isStopTyping, onSubmitQuestion, hideOperate, onWorkflowSubmit, isWorkflowSubmitting, isAsking = false }) => {
   const formatAnswer = formatMarkdown(answer.answer || '')
   const [displayedText, setDisplayedText] = useState('')
+  const [currentIndex, setCurrentIndex] = useState(0)
   const [isTyping, setIsTyping] = useState(false)
   const [hideOperateByCard, setHideOperateByCard] = useState(false)
+  const [isImageAnswer, setIsImageAnswer] = useState(false)
   const [hasProcessedCardList, setHasProcessedCardList] = useState(false) // 添加标记，避免重复处理cardList
-  const completedOnceRef = useRef(false)
 
   function extractImageSources(htmlString: string): string[] {
     const imgRegex = /<img[^>]+src="([^">]+)"/gi
@@ -118,34 +119,44 @@ export const ChatAnswerParser: React.FC<ChatAnswerParserProps> = ({ isLastAnswer
   }
 
   useEffect(() => {
-    // Streaming stage: render plain text only (no markdown parsing / no typewriter),
-    // to avoid heavy re-rendering and page flicker.
-    if (!answer.endAnswerFlag) {
-      setDisplayedText(answer.answer || '')
-      setIsTyping(false)
-      completedOnceRef.current = false
+    if (isStopTyping) {
       return
     }
-    // Stream ended: render full markdown once (no typewriter) to avoid heavy re-renders.
-    if (completedOnceRef.current)
-      return
-    completedOnceRef.current = true
-
-    // Keep existing contract: notify typing start/end callbacks once.
+    if (!isTyping) {
       onTyping()
-    setIsTyping(false)
-
-    if (formatAnswer.includes('<img')) {
+      setIsTyping(true)
+    }
+    if (currentIndex < formatAnswer.length) {
+      const nextChar = formatAnswer[currentIndex]
+      if (nextChar === '<' || isImageAnswer) {
+        setIsImageAnswer(true)
+        const timer = setTimeout(() => {
+          setCurrentIndex(prevIndex => prevIndex + 1)
+        }, 10) // 调整此值以改变打字速度
+        return () => clearTimeout(timer)
+      }
+      else {
+        const timer = setTimeout(() => {
+          setDisplayedText(formatAnswer.slice(0, currentIndex + 1))
+          setCurrentIndex(prevIndex => prevIndex + 1)
+        }, 10) // 调整此值以改变打字速度
+        return () => clearTimeout(timer)
+      }
+    }
+    else {
+      if (answer.endAnswerFlag) {
+        if (isImageAnswer) {
           handleImageAnswer()
         }
         else {
-      setDisplayedText(formatAnswer)
+          setIsTyping(false)
           onComplate()
         }
-
          // 流式输出结束时检查 cardList 中的 URL
          handleCardListUrls()
-  }, [answer.endAnswerFlag, answer.answer])
+      }
+    }
+  }, [answer, currentIndex])
 
   const handleStopTyping = async () => {
     const res = await fetchTerminateQuestion(answer)
@@ -186,7 +197,7 @@ export const ChatAnswerParser: React.FC<ChatAnswerParserProps> = ({ isLastAnswer
 
       {!!displayedText.length && (
         <div style={{ background: '#F7FAFD' }} className={answer.cardList?.length ? 'mb-[20px]' : ''}>
-          <MarkdownDetail disablePie={!answer.endAnswerFlag}>
+          <MarkdownDetail>
             {displayedText}
           </MarkdownDetail>
         </div>