diff --git a/components/dashboard/network-timeline.tsx b/components/dashboard/network-timeline.tsx
index 3e47858..12a217d 100644
--- a/components/dashboard/network-timeline.tsx
+++ b/components/dashboard/network-timeline.tsx
@@ -13,7 +13,9 @@ import {
   XCircle,
   Info,
   Activity,
-  Pause
+  Pause,
+  Copy,
+  Check
 } from 'lucide-react';
 import { cn } from '@/public/lib/utils';
 
@@ -72,6 +74,7 @@ export function NetworkTimeline({
   const [expandedTasks, setExpandedTasks] = useState<Set<string>>(new Set());
   const [timeAgo, setTimeAgo] = useState<string>('');
   const [retryingTasks, setRetryingTasks] = useState<Set<string>>(new Set());
+  const [copiedTaskId, setCopiedTaskId] = useState<string | null>(null);
 
   // 自动清理重试状态：当任务状态不再是RETRYING时，移除重试状态
   useEffect(() => {
@@ -843,6 +846,34 @@ export function NetworkTimeline({
     }
   };
 
+  // 复制错误信息到剪贴板
+  const copyErrorInfo = async (taskId: string, errorMessage: string, errorCode?: string) => {
+    try {
+      const errorText = `任务ID: ${taskId}\n错误信息: ${errorMessage}${errorCode ? `\n错误代码: ${errorCode}` : ''}`;
+      await navigator.clipboard.writeText(errorText);
+      
+      // 显示复制成功反馈
+      setCopiedTaskId(taskId);
+      setTimeout(() => {
+        setCopiedTaskId(null);
+      }, 2000);
+    } catch (error) {
+      console.error('复制失败:', error);
+      // 降级方案：使用传统的复制方法
+      const textArea = document.createElement('textarea');
+      textArea.value = `任务ID: ${taskId}\n错误信息: ${errorMessage}${errorCode ? `\n错误代码: ${errorCode}` : ''}`;
+      document.body.appendChild(textArea);
+      textArea.select();
+      document.execCommand('copy');
+      document.body.removeChild(textArea);
+      
+      setCopiedTaskId(taskId);
+      setTimeout(() => {
+        setCopiedTaskId(null);
+      }, 2000);
+    }
+  };
+
   // 格式化文件大小
   function formatSize(bytes: number): string {
     if (bytes < 1024) return `${bytes} B`;
@@ -1177,7 +1208,14 @@ export function NetworkTimeline({
             <div className="w-16 text-center">类型</div>
             <div className="w-20 text-center">进度</div>
             <div className="w-48 text-center">时间信息</div>
-            <div className="flex-1 text-center">时间线</div>
+            <div className="flex-1 text-center">
+              <div className="flex items-center justify-center gap-2">
+                <span>时间线</span>
+                <span className="text-cyan-400 font-bold">
+                  (总时长: {formatTime(projectDurationMs)})
+                </span>
+              </div>
+            </div>
           </div>
 
           {/* 任务列表 */}
@@ -1197,11 +1235,9 @@ export function NetworkTimeline({
               <div
                 key={task.id}
                 className={cn(
-                  "flex items-center px-4 py-1.5 text-sm border-b border-gray-800/30 cursor-pointer hover:bg-gray-800/50 transition-all duration-200 ease-out",
-                  selectedTask === task.id && "bg-blue-600/20",
+                  "flex items-center px-4 py-1.5 text-sm border-b border-gray-800/30 transition-all duration-200 ease-out",
                   task.level === 1 && "ml-4 bg-gray-900/30" // 子任务缩进和背景区分
                 )}
-                onClick={() => setSelectedTask(selectedTask === task.id ? null : task.id)}
               >
                 {/* 状态图标 */}
                 <div className="w-8 flex justify-center">
@@ -1214,14 +1250,9 @@ export function NetworkTimeline({
                 {/* 展开/折叠按钮 */}
                 <div className="w-6 flex justify-center">
                   {task.level === 0 && task.subTasks && task.subTasks.length > 0 && (
-                    <motion.button
-                      onClick={(e) => {
-                        e.stopPropagation();
-                        toggleTaskExpansion(task.id);
-                      }}
-                      className="p-0.5 hover:bg-gray-700 rounded text-gray-400 hover:text-white transition-colors duration-150"
+                    <motion.div
+                      className="p-0.5 text-gray-400 transition-colors duration-150"
                       whileHover={{ scale: 1.1 }}
-                      whileTap={{ scale: 0.95 }}
                     >
                       <motion.div
                         animate={{
@@ -1234,15 +1265,26 @@ export function NetworkTimeline({
                       >
                         <ChevronRight className="w-3 h-3" />
                       </motion.div>
-                    </motion.button>
+                    </motion.div>
                   )}
                 </div>
 
                 {/* 任务名称 */}
-                <div className={cn(
-                  "w-56 flex items-center gap-2",
-                  task.level === 1 && "pl-4"
-                )}>
+                <div 
+                  className={cn(
+                    "w-56 flex items-center gap-2 cursor-pointer hover:bg-gray-800/50 rounded px-2 py-1 transition-all duration-200",
+                    task.level === 1 && "pl-4",
+                    selectedTask === task.id && "bg-blue-600/20"
+                  )}
+                  onClick={() => {
+                    // 如果是主任务且有子任务，切换展开状态
+                    if (task.level === 0 && task.subTasks && task.subTasks.length > 0) {
+                      toggleTaskExpansion(task.id);
+                    }
+                    // 切换选中状态
+                    setSelectedTask(selectedTask === task.id ? null : task.id);
+                  }}
+                >
                   <span className={cn(
                     "truncate font-medium",
                     task.level === 0 ? "text-white text-base" : "text-sm text-gray-300"
@@ -1264,9 +1306,52 @@ export function NetworkTimeline({
                         <div className="absolute left-0 top-8 z-50 invisible group-hover:visible opacity-0 group-hover:opacity-100 transition-all duration-200">
                           <div className="bg-gray-900 border border-red-500/30 rounded-lg shadow-xl p-4 min-w-80 max-w-96">
                             {/* 错误标题 */}
-                            <div className="flex items-center gap-2 mb-3">
-                              <XCircle className="w-5 h-5 text-red-400 flex-shrink-0" />
-                              <h4 className="text-red-400 font-semibold text-base">任务执行失败</h4>
+                            <div className="flex items-center justify-between mb-3">
+                              <div className="flex items-center gap-2">
+                                <XCircle className="w-5 h-5 text-red-400 flex-shrink-0" />
+                                <h4 className="text-red-400 font-semibold text-base">任务执行失败</h4>
+                              </div>
+                              {/* 复制按钮 */}
+                              {(() => {
+                                let errorInfo;
+                                if (task.level === 0) {
+                                  const originalTask = tasks.find((t: any) => t.task_id === task.id);
+                                  if (!originalTask) return null;
+                                  errorInfo = getTaskErrorInfo(originalTask);
+                                } else {
+                                  errorInfo = getSubTaskErrorInfo(task.id);
+                                }
+
+                                if (!errorInfo.hasError) return null;
+
+                                return (
+                                  <button
+                                    onClick={(e) => {
+                                      e.stopPropagation();
+                                      copyErrorInfo(task.id, errorInfo.errorMessage, errorInfo.errorCode);
+                                    }}
+                                    className={cn(
+                                      "flex items-center gap-1 px-2 py-1 text-xs rounded transition-colors",
+                                      copiedTaskId === task.id
+                                        ? "bg-green-600/20 text-green-400"
+                                        : "bg-gray-700/50 text-gray-300 hover:bg-gray-600/50 hover:text-white"
+                                    )}
+                                    title="复制错误信息"
+                                  >
+                                    {copiedTaskId === task.id ? (
+                                      <>
+                                        <Check className="w-3 h-3" />
+                                        <span>已复制</span>
+                                      </>
+                                    ) : (
+                                      <>
+                                        <Copy className="w-3 h-3" />
+                                        <span>复制</span>
+                                      </>
+                                    )}
+                                  </button>
+                                );
+                              })()}
                             </div>
 
                             {/* 错误详情 */}
@@ -1609,24 +1694,50 @@ export function NetworkTimeline({
                             {errorInfo.errorCode && (
                               <span className="text-red-400 text-[10px] font-mono">代码: {errorInfo.errorCode}</span>
                             )}
-                            {onRetryTask && (
+                            <div className="flex items-center gap-1 ml-auto">
+                              {/* 复制错误信息按钮 */}
                               <button
-                                onClick={() => handleRetryTask(task.id)}
-                                disabled={retryingTasks.has(task.id) || task.status === 'RETRYING'}
+                                onClick={() => copyErrorInfo(task.id, errorInfo.errorMessage, errorInfo.errorCode)}
                                 className={cn(
-                                  "ml-auto flex items-center gap-1 px-2 py-1 text-white text-[10px] rounded transition-colors",
-                                  (retryingTasks.has(task.id) || task.status === 'RETRYING')
-                                    ? "bg-yellow-600 cursor-not-allowed"
-                                    : "bg-blue-600 hover:bg-blue-700"
+                                  "flex items-center gap-1 px-2 py-1 text-[10px] rounded transition-colors",
+                                  copiedTaskId === task.id
+                                    ? "bg-green-600/20 text-green-400"
+                                    : "bg-gray-700/50 text-gray-300 hover:bg-gray-600/50 hover:text-white"
                                 )}
+                                title="复制错误信息"
                               >
-                                <RefreshCw className={cn(
-                                  "w-3 h-3",
-                                  (retryingTasks.has(task.id) || task.status === 'RETRYING') && "animate-spin"
-                                )} />
-                                {(retryingTasks.has(task.id) || task.status === 'RETRYING') ? "重试中..." : "重试任务"}
+                                {copiedTaskId === task.id ? (
+                                  <>
+                                    <Check className="w-3 h-3" />
+                                    <span>已复制</span>
+                                  </>
+                                ) : (
+                                  <>
+                                    <Copy className="w-3 h-3" />
+                                    <span>复制</span>
+                                  </>
+                                )}
                               </button>
-                            )}
+                              {/* 重试按钮 */}
+                              {onRetryTask && (
+                                <button
+                                  onClick={() => handleRetryTask(task.id)}
+                                  disabled={retryingTasks.has(task.id) || task.status === 'RETRYING'}
+                                  className={cn(
+                                    "flex items-center gap-1 px-2 py-1 text-white text-[10px] rounded transition-colors",
+                                    (retryingTasks.has(task.id) || task.status === 'RETRYING')
+                                      ? "bg-yellow-600 cursor-not-allowed"
+                                      : "bg-blue-600 hover:bg-blue-700"
+                                  )}
+                                >
+                                  <RefreshCw className={cn(
+                                    "w-3 h-3",
+                                    (retryingTasks.has(task.id) || task.status === 'RETRYING') && "animate-spin"
+                                  )} />
+                                  {(retryingTasks.has(task.id) || task.status === 'RETRYING') ? "重试中..." : "重试任务"}
+                                </button>
+                              )}
+                            </div>
                           </div>
                         );
                       })()}