fix(desktop): 扩充应用菜单与元数据快捷键

frontend/src/features/editor/EditorHeader.vue

@@ -5,6 +5,7 @@ import ExportDialog from './ExportDialog.vue'
 import { computed, ref } from 'vue'
 import ActionDialog from '@/components/common/ActionDialog.vue'
 import { useActionDialog } from '@/composables/useActionDialog'
+import { isDesktop } from '@/services/platform/desktop'
 import { t } from '@/i18n'
 
 const editorStore = useEditorStore()
@@ -12,6 +13,7 @@ const workspaceStore = useWorkspaceStore()
 const { actionDialog, resolveAction, askConfirm } = useActionDialog()
 const reloadError = ref('')
 const exportOpen = ref(false)
+const desktop = isDesktop()
 const needsRecovery = computed(() => ['conflict', 'external_changed'].includes(editorStore.saveStatus))
 const missingFile = computed(() => needsRecovery.value && editorStore.currentFilePath === workspaceStore.activeFilePath && !workspaceStore.activeFile && !workspaceStore.treeRefreshError)
 function downloadCopy() {
@@ -49,7 +51,7 @@ const statusText = computed<Record<string, string>>(() => ({
     <ActionDialog v-if="actionDialog" v-bind="actionDialog" @resolve="resolveAction" />
     <div class="file-identity"><strong>{{ workspaceStore.activeFile?.name ?? t('未命名笔记', 'Untitled note') }}</strong><small>{{ workspaceStore.activeFilePath }}</small></div>
     <div class="editor-actions">
-      <button class="button-secondary" @click="exportOpen = true">{{ t('导出', 'Export') }}</button>
+      <button v-if="!desktop" class="button-secondary" @click="exportOpen = true">{{ t('导出', 'Export') }}</button>
       <span class="save-status" :class="editorStore.saveStatus">{{ statusText[editorStore.saveStatus] }}</span>
       <button v-if="needsRecovery && !missingFile" class="button-secondary" @click="reload">{{ t('重新加载外部版本', 'Reload external version') }}</button>
       <span v-if="missingFile" class="save-status conflict">{{ t('原文件已删除或移动', 'Original file deleted or moved') }}</span>