feat: Add copy functionality to message reasoning content

src/renderer/src/pages/home/Messages/MessageThought.tsx

@@ -1,6 +1,7 @@
+import { CheckOutlined } from '@ant-design/icons'
 import { useSettings } from '@renderer/hooks/useSettings'
 import { Message } from '@renderer/types'
-import { Collapse } from 'antd'
+import { Collapse, message as antdMessage, Tooltip } from 'antd'
 import { FC, useEffect, useMemo, useState } from 'react'
 import { useTranslation } from 'react-i18next'
 import BarLoader from 'react-spinners/BarLoader'
@@ -14,6 +15,7 @@ interface Props {
 
 const MessageThought: FC<Props> = ({ message }) => {
   const [activeKey, setActiveKey] = useState<'thought' | ''>('thought')
+  const [copied, setCopied] = useState(false)
   const isThinking = !message.content
   const { t } = useTranslation()
   const { messageFont, fontSize } = useSettings()
@@ -31,6 +33,15 @@ const MessageThought: FC<Props> = ({ message }) => {
     return null
   }
 
+  const copyThought = () => {
+    if (message.reasoning_content) {
+      navigator.clipboard.writeText(message.reasoning_content)
+      antdMessage.success({ content: t('message.copied'), key: 'copy-message' })
+      setCopied(true)
+      setTimeout(() => setCopied(false), 2000)
+    }
+  }
+
   const thinkingTime = message.metrics?.time_thinking_millsec || 0
   const thinkingTimeSeconds = (thinkingTime / 1000).toFixed(1)
   const isPaused = message.status === 'paused'
@@ -50,6 +61,20 @@ const MessageThought: FC<Props> = ({ message }) => {
                 {isThinking ? t('chat.thinking') : t('chat.deeply_thought', { secounds: thinkingTimeSeconds })}
               </TinkingText>
               {isThinking && !isPaused && <BarLoader color="#9254de" />}
+              {(!isThinking || isPaused) && (
+                <Tooltip title={t('common.copy')} mouseEnterDelay={0.8}>
+                  <ActionButton
+                    className="message-action-button"
+                    onClick={(e) => {
+                      e.stopPropagation()
+                      copyThought()
+                    }}
+                    aria-label={t('common.copy')}>
+                    {!copied && <i className="iconfont icon-copy"></i>}
+                    {copied && <CheckOutlined style={{ color: 'var(--color-primary)' }} />}
+                  </ActionButton>
+                </Tooltip>
+              )}
             </MessageTitleLabel>
           ),
           children: (
@@ -79,4 +104,32 @@ const TinkingText = styled.span`
   color: var(--color-text-2);
 `
 
+const ActionButton = styled.button`
+  background: none;
+  border: none;
+  color: var(--color-text-2);
+  cursor: pointer;
+  padding: 4px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  margin-left: auto;
+  opacity: 0.6;
+  transition: all 0.3s;
+
+  &:hover {
+    opacity: 1;
+    color: var(--color-text);
+  }
+
+  &:focus-visible {
+    outline: 2px solid var(--color-primary);
+    outline-offset: 2px;
+  }
+
+  .iconfont {
+    font-size: 14px;
+  }
+`
+
 export default MessageThought