diff --git a/ui/src/components/COMPONENT_README.md b/ui/src/components/COMPONENT_README.md
index 009bf2161eb..6a2ae00e7ac 100644
--- a/ui/src/components/COMPONENT_README.md
+++ b/ui/src/components/COMPONENT_README.md
@@ -929,6 +929,14 @@ Workspace API 内部使用 `getWorkspaceId()`，System 共享 API 不接收工
 
 ## 对话模块组件
 
+### RenameConversation（对话模块）
+
+位于 `conversation-panel/components/rename/index.vue`，显式导入并传入
+`conversation`。入口维护重命名菜单项，同目录 `RenameDialog.vue` 维护弹窗、标题校验及保存调用，
+点击菜单时才挂载弹窗，`closed` 后卸载；放入 Dropdown 菜单时，
+调用方开启 `persistent`，确保菜单收起后保留弹窗实例。门户调用方额外传入 `applicationId`，
+按所属智能体保存并同步分组及当前会话列表；`renamed(title)` 事件供历史抽屉同步标题。
+
 ### ReverseInfiniteScroll（对话模块）
 
 位于 `conversation-panel/core/reverse-infinite-scroll/index.vue`，由对话模块显式导入，
diff --git a/ui/src/conversation-panel/components/header/simple-debug/index.vue b/ui/src/conversation-panel/components/header/simple-debug/index.vue
index 75464387c94..4dd98dbb544 100644
--- a/ui/src/conversation-panel/components/header/simple-debug/index.vue
+++ b/ui/src/conversation-panel/components/header/simple-debug/index.vue
@@ -14,7 +14,7 @@ const { appInfo, leftSideOpen, toggleLeftSide, newConversation } = useConversati
         <MkIcon name="icon_sidebar_outlined" :size="18" class="text-N900!" />
       </el-button>
     </MkTooltip>
-    <el-divider direction="vertical" class="mx-1!" />
+    <el-divider direction="vertical" class="ml-2! mr-3!" />
     <ApplicationIcon :icon="appInfo?.icon" :size="24" class="shrink-0" />
     <h4 class="ml-1 min-w-0 flex-1 truncate" :title="appInfo?.name">{{ appInfo?.name }}</h4>
     <MkTooltip content="新建对话">
@@ -23,6 +23,9 @@ const { appInfo, leftSideOpen, toggleLeftSide, newConversation } = useConversati
         <MkIcon name="icon_new-chat_outlined" :size="18" />
       </el-button>
     </MkTooltip>
-    <HistoryPopover />
+    <!-- 历史记录 -->
+    <span class="ml-1">
+      <HistoryPopover></HistoryPopover>
+    </span>
   </header>
 </template>
diff --git a/ui/src/conversation-panel/components/history-popover/index.vue b/ui/src/conversation-panel/components/history-popover/index.vue
index 568f2ab3b1c..75673b337a6 100644
--- a/ui/src/conversation-panel/components/history-popover/index.vue
+++ b/ui/src/conversation-panel/components/history-popover/index.vue
@@ -1,8 +1,9 @@
 <script setup lang="ts">
 import { ref } from 'vue'
-import { ElMessageBox, type ScrollbarDirection } from 'element-plus'
+import type { ScrollbarDirection } from 'element-plus'
 import type { Conversation } from '../../core/types'
 import { useConversationListStore } from '../../left-sidebar/conversation-list/index'
+import RenameConversation from '../rename/index.vue'
 import { relativeTimeFormat } from '@/utils/time'
 import { MsgConfirm } from '@/utils/message'
 
@@ -27,19 +28,6 @@ function handleSelectConversation(conversation: Conversation) {
   visible.value = false
 }
 
-/* 重命名：去除首尾空格后提交，取消或请求失败保留原名称。 */
-function handleRenameConversation(conversation: Conversation) {
-  ElMessageBox.prompt('', '重命名', {
-    inputValue: conversation.abstract || '',
-    inputPattern: /\S/,
-    inputErrorMessage: '请输入对话名称',
-    confirmButtonText: '确定',
-    cancelButtonText: '取消',
-  })
-    .then(({ value }) => conversationList.renameChat(conversation.id, value.trim()))
-    .catch(() => {})
-}
-
 function handleDeleteConversation(conversation: Conversation) {
   MsgConfirm('确认删除该对话？', '删除后无法恢复。')
     .then(() => conversationList.deleteChat(conversation.id))
@@ -67,7 +55,15 @@ function handleClearConversations() {
 </script>
 
 <template>
-  <el-popover v-model:visible="visible" trigger="click" placement="bottom-end" :width="280" popper-class="p-2!" @show="handleShow">
+  <el-popover
+    v-model:visible="visible"
+    trigger="click"
+    placement="bottom-end"
+    :width="280"
+    popper-class="p-2!"
+    :popper-style="{ '--el-bg-color-overlay': 'var(--mk-N100)' }"
+    @show="handleShow"
+  >
     <template #reference>
       <span class="inline-flex">
         <MkTooltip content="历史对话">
@@ -109,17 +105,21 @@ function handleClearConversations() {
               {{ conversationTime(conversation) }}
             </span>
           </template>
-          <template #action-dropdown>
-            <!-- 重命名历史对话 -->
-            <MkDropdownItem @click="handleRenameConversation(conversation)">
-              <template #icon><MkIcon name="icon_edit_outlined" /></template>
-              <span>重命名</span>
-            </MkDropdownItem>
-            <!-- 删除历史对话 -->
-            <MkDropdownItem @click="handleDeleteConversation(conversation)">
-              <template #icon><MkIcon name="icon_delete-trash_outlined" /></template>
-              <span>删除</span>
-            </MkDropdownItem>
+          <template #action>
+            <MkDropdown trigger="click" persistent :teleported="false">
+              <!-- 打开历史对话操作菜单 -->
+              <el-button text><MkIcon name="icon_more_outlined" /></el-button>
+              <template #dropdown>
+                <MkDropdownMenu>
+                  <RenameConversation :conversation="conversation" />
+                  <!-- 删除历史对话 -->
+                  <MkDropdownItem @click="handleDeleteConversation(conversation)">
+                    <template #icon><MkIcon name="icon_delete-trash_outlined" /></template>
+                    <span>删除</span>
+                  </MkDropdownItem>
+                </MkDropdownMenu>
+              </template>
+            </MkDropdown>
           </template>
         </MkListItem>
       </div>
diff --git a/ui/src/conversation-panel/components/rename/RenameDialog.vue b/ui/src/conversation-panel/components/rename/RenameDialog.vue
new file mode 100644
index 00000000000..c7c7b3f51c3
--- /dev/null
+++ b/ui/src/conversation-panel/components/rename/RenameDialog.vue
@@ -0,0 +1,73 @@
+<script setup lang="ts">
+import { inject, reactive, ref } from 'vue'
+import type { FormInstance, FormRules } from 'element-plus'
+import ConversationApi from '@/api/chat/conversation'
+import { PORTAL_CONVERSATION_LIST_KEY } from '../../left-sidebar/portal-conversation-list/index'
+import type { Conversation } from '../../core/types'
+import { useConversationListStore } from '../../left-sidebar/conversation-list/index'
+
+defineOptions({ name: 'RenameDialog' })
+
+const props = defineProps<{ conversation: Conversation; applicationId?: string }>()
+const conversationList = useConversationListStore()
+const portalList = inject(PORTAL_CONVERSATION_LIST_KEY, null)
+const emit = defineEmits<{ renamed: [title: string]; closed: [] }>()
+
+// 重命名会话：回填标题，校验并去除首尾空格后提交。
+const renameDialogVisible = ref(true)
+const renameSubmitting = ref(false)
+const renameConversationId = props.conversation.id
+const renameFormRef = ref<FormInstance>()
+const renameForm = reactive({ abstract: props.conversation.abstract || '' })
+const renameRules: FormRules<typeof renameForm> = {
+  abstract: [{ required: true, whitespace: true, message: '请输入', trigger: 'blur' }],
+}
+
+function submitRename() {
+  if (renameSubmitting.value) return
+  renameFormRef.value?.validate((valid) => {
+    if (!valid) return
+    renameSubmitting.value = true
+    const title = renameForm.abstract.trim()
+    const conversationId = renameConversationId
+    const applicationId = props.applicationId
+    const request = applicationId
+      ? ConversationApi.putConversation(applicationId, conversationId, { abstract: title })
+      : conversationList.renameChat(conversationId, title)
+    return request
+      .then(() => {
+        if (applicationId && portalList) {
+          const group = portalList.applicationGroups.value.find((group) => group.id === applicationId)
+          const groupConversation = group?.conversations.find((conversation) => conversation.id === conversationId)
+          if (groupConversation) groupConversation.abstract = title
+          if (portalList.currentApplicationId.value === applicationId) {
+            const currentConversation = conversationList.conversations.value.find((conversation) => conversation.id === conversationId)
+            if (currentConversation) currentConversation.abstract = title
+          }
+        }
+        emit('renamed', title)
+        renameDialogVisible.value = false
+      })
+      .catch(() => {})
+      .finally(() => {
+        renameSubmitting.value = false
+      })
+  })
+}
+</script>
+
+<template>
+  <MkDialog v-model="renameDialogVisible" title="重命名" @closed="emit('closed')">
+    <el-form ref="renameFormRef" :model="renameForm" :rules="renameRules" label-position="top" require-asterisk-position="right" @submit.prevent>
+      <el-form-item label="会话标题" prop="abstract">
+        <el-input v-model="renameForm.abstract" placeholder="请输入" />
+      </el-form-item>
+    </el-form>
+    <template #footer>
+      <!-- 取消重命名 -->
+      <el-button plain @click="renameDialogVisible = false">取消</el-button>
+      <!-- 保存会话标题 -->
+      <el-button type="primary" :loading="renameSubmitting" @click="submitRename">保存</el-button>
+    </template>
+  </MkDialog>
+</template>
diff --git a/ui/src/conversation-panel/components/rename/index.vue b/ui/src/conversation-panel/components/rename/index.vue
new file mode 100644
index 00000000000..28ac0e45a27
--- /dev/null
+++ b/ui/src/conversation-panel/components/rename/index.vue
@@ -0,0 +1,26 @@
+<script setup lang="ts">
+import { ref } from 'vue'
+import type { Conversation } from '../../core/types'
+import RenameDialog from './RenameDialog.vue'
+
+defineOptions({ name: 'RenameConversation' })
+
+defineProps<{ conversation: Conversation; applicationId?: string }>()
+const emit = defineEmits<{ renamed: [title: string] }>()
+const renameDialogRendered = ref(false)
+</script>
+
+<template>
+  <!-- 重命名历史对话 -->
+  <MkDropdownItem @click="renameDialogRendered = true">
+    <template #icon><MkIcon name="icon_edit_outlined" /></template>
+    <span>重命名</span>
+  </MkDropdownItem>
+  <RenameDialog
+    v-if="renameDialogRendered"
+    :conversation="conversation"
+    :application-id="applicationId"
+    @renamed="emit('renamed', $event)"
+    @closed="renameDialogRendered = false"
+  />
+</template>
diff --git a/ui/src/conversation-panel/left-sidebar/portal-conversation-list/HistoryConversationDrawer.vue b/ui/src/conversation-panel/left-sidebar/portal-conversation-list/HistoryConversationDrawer.vue
index 8533c64a27d..0dcce137dd0 100644
--- a/ui/src/conversation-panel/left-sidebar/portal-conversation-list/HistoryConversationDrawer.vue
+++ b/ui/src/conversation-panel/left-sidebar/portal-conversation-list/HistoryConversationDrawer.vue
@@ -5,6 +5,7 @@ import type { PortalConversationSummary } from '@/api/types'
 import { relativeTimeFormat } from '@/utils/time'
 import { useConversationListStore } from '../conversation-list/index'
 import { usePortalConversationListStore } from './index'
+import RenameConversation from '../../components/rename/index.vue'
 
 defineOptions({ name: 'HistoryConversationDrawer' })
 const props = defineProps<{ applicationId: string }>()
@@ -82,12 +83,25 @@ const handleDeleteConversation = (conversation: PortalConversationSummary) => {
               {{ relativeTimeFormat(conversation.update_time || conversation.create_time) }}
             </span>
           </template>
-          <template #action-dropdown>
-            <!-- 删除历史对话 -->
-            <MkDropdownItem divided @click="handleDeleteConversation(conversation)">
-              <template #icon><MkIcon name="icon_delete-trash_outlined" /></template>
-              <span>删除</span>
-            </MkDropdownItem>
+          <template #action>
+            <MkDropdown trigger="click" persistent :teleported="false">
+              <!-- 打开历史对话操作菜单 -->
+              <el-button text><MkIcon name="icon_more_outlined" /></el-button>
+              <template #dropdown>
+                <MkDropdownMenu>
+                  <RenameConversation
+                    :conversation="conversation"
+                    :application-id="selectedApplicationId"
+                    @renamed="conversation.abstract = $event"
+                  />
+                  <!-- 删除历史对话 -->
+                  <MkDropdownItem divided @click="handleDeleteConversation(conversation)">
+                    <template #icon><MkIcon name="icon_delete-trash_outlined" /></template>
+                    <span>删除</span>
+                  </MkDropdownItem>
+                </MkDropdownMenu>
+              </template>
+            </MkDropdown>
           </template>
         </MkListItem>
       </div>
diff --git a/ui/src/conversation-panel/left-sidebar/portal-conversation-list/index.vue b/ui/src/conversation-panel/left-sidebar/portal-conversation-list/index.vue
index e89edffe265..525e1ff4cb5 100644
--- a/ui/src/conversation-panel/left-sidebar/portal-conversation-list/index.vue
+++ b/ui/src/conversation-panel/left-sidebar/portal-conversation-list/index.vue
@@ -6,6 +6,7 @@ import { useConversationListStore } from '../conversation-list/index'
 import HistoryConversationDrawer from './HistoryConversationDrawer.vue'
 import AccountMenu from '../account-menu/index.vue'
 import { usePortalConversationListStore, type PortalApplicationGroup } from './index'
+import RenameConversation from '../../components/rename/index.vue'
 
 defineOptions({ name: 'PortalConversationList' })
 
@@ -122,6 +123,11 @@ const handleDeleteConversation = (group: PortalApplicationGroup, conversation: C
                   </el-button>
                   <template #dropdown>
                     <MkDropdownMenu>
+                      <!-- 新建当前分组智能体的对话 -->
+                      <MkDropdownItem @click="portalList.openApplication(group.id)">
+                        <template #icon><MkIcon name="icon_new-chat_outlined" /></template>
+                        <span>新建对话</span>
+                      </MkDropdownItem>
                       <!-- 删除智能体历史分组，待接入对应接口 -->
                       <MkDropdownItem divided disabled>
                         <template #icon><MkIcon name="icon_delete-trash_outlined" /></template>
@@ -154,12 +160,21 @@ const handleDeleteConversation = (group: PortalApplicationGroup, conversation: C
                     {{ conversationTime(conversation) }}
                   </span>
                 </template>
-                <template #action-dropdown>
-                  <!-- 删除 -->
-                  <MkDropdownItem divided @click="handleDeleteConversation(group, conversation)">
-                    <template #icon><MkIcon name="icon_delete-trash_outlined" /></template>
-                    <span>删除</span>
-                  </MkDropdownItem>
+                <template #action>
+                  <MkDropdown trigger="click" persistent :teleported="false">
+                    <!-- 打开历史对话操作菜单 -->
+                    <el-button text><MkIcon name="icon_more_outlined" /></el-button>
+                    <template #dropdown>
+                      <MkDropdownMenu>
+                        <RenameConversation :conversation="conversation" :application-id="group.id" @renamed="conversation.abstract = $event" />
+                        <!-- 删除历史对话 -->
+                        <MkDropdownItem divided @click="handleDeleteConversation(group, conversation)">
+                          <template #icon><MkIcon name="icon_delete-trash_outlined" /></template>
+                          <span>删除</span>
+                        </MkDropdownItem>
+                      </MkDropdownMenu>
+                    </template>
+                  </MkDropdown>
                 </template>
               </MkListItem>
               <!-- 超过5条 查看更多 -->
diff --git a/ui/src/conversation-panel/view/simple-debug/index.vue b/ui/src/conversation-panel/view/simple-debug/index.vue
index 848671009f0..1c831b4dbcb 100644
--- a/ui/src/conversation-panel/view/simple-debug/index.vue
+++ b/ui/src/conversation-panel/view/simple-debug/index.vue
@@ -146,7 +146,7 @@ defineExpose({ openSetting: () => (bundle.list.leftSideOpen.value = true) })
 /* 设置表单使用白底；两侧抽屉沿用挤压宽度并限制占比，避免把对话区完全覆盖。 */
 .mk-simple-debug .mk-conversation-side-panel {
   &.left {
-    background: var(--color-white);
+    background: white;
   }
 
   &.drawer {