feat(frontend): 合并 i18n 模式与消息工具兼容

frontend/src/core/i18n/locales/en-US.ts

@@ -48,6 +48,10 @@ export const enUS: Translations = {
     save: "Save",
     install: "Install",
     create: "Create",
+    export: "Export",
+    exportAsMarkdown: "Export as Markdown",
+    exportAsJSON: "Export as JSON",
+    exportSuccess: "Conversation exported",
     removeAttachment: "Remove attachment",
   },
 
@@ -286,6 +290,26 @@ export const enUS: Translations = {
     failed: "Subtask failed",
   },
 
+  // Token Usage
+  tokenUsage: {
+    title: "Token Usage",
+    input: "Input",
+    output: "Output",
+    total: "Total",
+  },
+
+  // Shortcuts
+  shortcuts: {
+    searchActions: "Search actions...",
+    noResults: "No results found.",
+    actions: "Actions",
+    keyboardShortcuts: "Keyboard Shortcuts",
+    keyboardShortcutsDescription:
+      "Navigate DeerFlow faster with keyboard shortcuts.",
+    openCommandPalette: "Open Command Palette",
+    toggleSidebar: "Toggle Sidebar",
+  },
+
   // Settings
   settings: {
     title: "Settings",

frontend/src/core/i18n/locales/types.ts

@@ -37,6 +37,10 @@ export interface Translations {
     save: string;
     install: string;
     create: string;
+    export: string;
+    exportAsMarkdown: string;
+    exportAsJSON: string;
+    exportSuccess: string;
     removeAttachment: string;
   };
 
@@ -216,6 +220,25 @@ export interface Translations {
     failed: string;
   };
 
+  // Token Usage
+  tokenUsage: {
+    title: string;
+    input: string;
+    output: string;
+    total: string;
+  };
+
+  // Shortcuts
+  shortcuts: {
+    searchActions: string;
+    noResults: string;
+    actions: string;
+    keyboardShortcuts: string;
+    keyboardShortcutsDescription: string;
+    openCommandPalette: string;
+    toggleSidebar: string;
+  };
+
   // Settings
   settings: {
     title: string;

frontend/src/core/i18n/locales/zh-CN.ts

@@ -48,6 +48,10 @@ export const zhCN: Translations = {
     save: "保存",
     install: "安装",
     create: "创建",
+    export: "导出",
+    exportAsMarkdown: "导出为 Markdown",
+    exportAsJSON: "导出为 JSON",
+    exportSuccess: "对话已导出",
     removeAttachment: "移除附件",
   },
 
@@ -277,6 +281,25 @@ export const zhCN: Translations = {
     failed: "子任务失败",
   },
 
+  // Token Usage
+  tokenUsage: {
+    title: "Token 用量",
+    input: "输入",
+    output: "输出",
+    total: "总计",
+  },
+
+  // Shortcuts
+  shortcuts: {
+    searchActions: "搜索操作...",
+    noResults: "未找到结果。",
+    actions: "操作",
+    keyboardShortcuts: "键盘快捷键",
+    keyboardShortcutsDescription: "使用键盘快捷键更快地操作 DeerFlow。",
+    openCommandPalette: "打开命令面板",
+    toggleSidebar: "切换侧边栏",
+  },
+
   // Settings
   settings: {
     title: "设置",

frontend/src/core/messages/utils.ts

@@ -317,6 +317,14 @@ export interface UploadedFile {
   path: string;
 }
 
+// Compatibility type for newer UI modules.
+export interface FileInMessage {
+  filename: string;
+  size: string | number;
+  path?: string;
+  status?: "uploading" | "uploaded";
+}
+
 /**
  * Result of parsing uploaded files from message content
  */
@@ -363,3 +371,9 @@ export function parseUploadedFiles(content: string): ParsedUploadedFiles {
 
   return { files, cleanContent };
 }
+
+export function stripUploadedFilesTag(content: string): string {
+  return content
+    .replace(/<uploaded_files>[\s\S]*?<\/uploaded_files>/g, "")
+    .trim();
+}