feat: add timestamps to markdown export

src/renderer/src/i18n/locales/en-us.json

@@ -3825,6 +3825,10 @@
           "help": "Display the model provider (e.g., OpenAI, Gemini) when exporting to Markdown",
           "title": "Show Model Provider"
         },
+        "show_timestamp": {  
+          "title": "Show message timestamps on export",  
+          "help": "When enabled, the creation time of each message will be appended to its heading in the format YYYY-MM-DD HH:mm."  
+        },
         "standardize_citations": {
           "help": "When enabled, citation markers will be converted to standard Markdown footnote format [^1] and citation lists will be formatted.",
           "title": "Standardize Citation Format"

src/renderer/src/i18n/locales/zh-cn.json

@@ -3825,6 +3825,10 @@
           "help": "在导出 Markdown 时显示模型供应商，如 OpenAI、Gemini 等",
           "title": "显示模型供应商"
         },
+        "show_timestamp": {  
+          "title": "导出时显示消息时间戳",  
+          "help": "开启后，导出 Markdown 时每条消息标题后会附加发送时间，格式为 YYYY-MM-DD HH:mm"  
+        },
         "standardize_citations": {
           "help": "开启后，导出 Markdown 时会将引用标记转换为标准 Markdown 脚注格式 [^1]，并格式化引用列表",
           "title": "标准化引用格式"

src/renderer/src/i18n/locales/zh-tw.json

@@ -3825,6 +3825,10 @@
           "help": "在匯出 Markdown 時顯示模型供應商，如 OpenAI、Gemini 等",
           "title": "顯示模型供應商"
         },
+        "show_timestamp": {  
+          "title": "匯出時顯示訊息時間戳記",  
+          "help": "開啟後，匯出 Markdown 時每條訊息標題後會附加傳送時間，格式為 YYYY-MM-DD HH:mm"  
+        },
         "standardize_citations": {
           "help": "將引用標記轉換為標準 Markdown 腳註格式 [^1]，並格式化引用列表",
           "title": "標準化引用格式"

src/renderer/src/pages/settings/DataSettings/MarkdownExportSettings.tsx

@@ -9,6 +9,7 @@ import {
   setmarkdownExportPath,
   setShowModelNameInMarkdown,
   setShowModelProviderInMarkdown,
+  setShowTimestampInMarkdown,
   setStandardizeCitationsInExport,
   setUseTopicNamingForMessageTitle
 } from '@renderer/store/settings'
@@ -30,6 +31,7 @@ const MarkdownExportSettings: FC = () => {
   const useTopicNamingForMessageTitle = useSelector((state: RootState) => state.settings.useTopicNamingForMessageTitle)
   const showModelNameInExport = useSelector((state: RootState) => state.settings.showModelNameInMarkdown)
   const showModelProviderInMarkdown = useSelector((state: RootState) => state.settings.showModelProviderInMarkdown)
+  const showTimestampInMarkdown = useSelector((state: RootState) => state.settings.showTimestampInMarkdown)
   const excludeCitationsInExport = useSelector((state: RootState) => state.settings.excludeCitationsInExport)
   const standardizeCitationsInExport = useSelector((state: RootState) => state.settings.standardizeCitationsInExport)
 
@@ -59,7 +61,11 @@ const MarkdownExportSettings: FC = () => {
   const handleToggleShowModelProvider = (checked: boolean) => {
     dispatch(setShowModelProviderInMarkdown(checked))
   }
-
+
+  const handleToggleShowTimestamp = (checked: boolean) => {  
+  dispatch(setShowTimestampInMarkdown(checked))  
+  }
+
   const handleToggleExcludeCitations = (checked: boolean) => {
     dispatch(setExcludeCitationsInExport(checked))
   }
@@ -127,6 +133,14 @@ const MarkdownExportSettings: FC = () => {
       <SettingRow>
         <SettingHelpText>{t('settings.data.markdown_export.show_model_provider.help')}</SettingHelpText>
       </SettingRow>
+      <SettingDivider />  
+      <SettingRow>  
+        <SettingRowTitle>{t('settings.data.markdown_export.show_timestamp.title')}</SettingRowTitle>  
+        <Switch checked={showTimestampInMarkdown} onChange={handleToggleShowTimestamp} />  
+      </SettingRow>  
+      <SettingRow>  
+        <SettingHelpText>{t('settings.data.markdown_export.show_timestamp.help')}</SettingHelpText>  
+      </SettingRow>
       <SettingDivider />
       <SettingRow>
         <SettingRowTitle>{t('settings.data.markdown_export.exclude_citations.title')}</SettingRowTitle>

src/renderer/src/store/settings.ts

@@ -172,6 +172,7 @@ export interface SettingsState {
   notionExportReasoning: boolean
   excludeCitationsInExport: boolean
   standardizeCitationsInExport: boolean
+  showTimestampInMarkdown: boolean
   yuqueToken: string | null
   yuqueUrl: string | null
   yuqueRepoId: string | null
@@ -361,6 +362,7 @@ export const initialState: SettingsState = {
   thoughtAutoCollapse: true,
   notionExportReasoning: false,
   excludeCitationsInExport: false,
+  showTimestampInMarkdown: false,
   standardizeCitationsInExport: false,
   yuqueToken: '',
   yuqueUrl: '',
@@ -739,6 +741,9 @@ const settingsSlice = createSlice({
     setShowModelProviderInMarkdown: (state, action: PayloadAction<boolean>) => {
       state.showModelProviderInMarkdown = action.payload
     },
+    setShowTimestampInMarkdown: (state, action: PayloadAction<boolean>) => {  
+      state.showTimestampInMarkdown = action.payload  
+    },
     setThoughtAutoCollapse: (state, action: PayloadAction<boolean>) => {
       state.thoughtAutoCollapse = action.payload
     },
@@ -904,6 +909,7 @@ const settingsSlice = createSlice({
 })
 
 export const {
+  setShowTimestampInMarkdown,
   setShowModelNameInMarkdown,
   setShowModelProviderInMarkdown,
   setShowAssistants,

src/renderer/src/utils/export.ts

@@ -269,9 +269,10 @@ const createBaseMarkdown = (
   excludeCitations: boolean = false,
   normalizeCitations: boolean = true
 ): { titleSection: string; reasoningSection: string; contentSection: string; citation: string } => {
-  const { forceDollarMathInMarkdown } = store.getState().settings
-  const roleText = getRoleText(message.role, message.model?.name, message.model?.provider)
-  const titleSection = `## ${roleText}`
+  const { forceDollarMathInMarkdown, showTimestampInMarkdown } = store.getState().settings  
+  const roleText = getRoleText(message.role, message.model?.name, message.model?.provider)  
+  const timestamp = showTimestampInMarkdown ? ` (${dayjs(message.createdAt).format('YYYY-MM-DD HH:mm')})` : ''  
+  const titleSection = `## ${roleText}${timestamp}`
   let reasoningSection = ''
 
   if (includeReasoning) {