feat: 实现账户批量导出功能和界面优化

- 新增批量导出功能，支持text模式导出账户数据
- 添加导出弹窗，支持文本全选和文件下载
- 移动刷新按钮到全局位置，统一刷新账户和统计数据
- 在统计卡片中将已导出状态计入可用账户
- 创建自定义确认对话框替换系统confirm弹窗
- 统一按钮尺寸，修复刷新和上传按钮大小不一致
- 添加已导出状态的中文映射和样式

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

components/accounts/account-table.tsx

@@ -5,7 +5,7 @@ import { Button } from '@/components/ui/button';
 import { Checkbox } from '@/components/ui/checkbox';
 import { Table, TableBody, TableCell, TableHead, TableHeader, TableRow } from '@/components/ui/table';
 import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@/components/ui/select';
-import { ChevronLeft, ChevronRight, Eye, Edit, Trash2, RefreshCw } from 'lucide-react';
+import { ChevronLeft, ChevronRight, Eye, Edit, Trash2 } from 'lucide-react';
 import { Account } from '@/lib/types';
 
 interface AccountTableProps {
@@ -22,7 +22,6 @@ interface AccountTableProps {
   onSelectOne: (id: number, checked: boolean) => void;
   onPageChange: (page: number) => void;
   onPageSizeChange: (pageSize: number) => void;
-  onRefresh: () => void;
   onView?: (account: Account) => void;
   onEdit?: (account: Account) => void;
   onDelete?: (account: Account) => void;
@@ -37,7 +36,6 @@ export function AccountTable({
   onSelectOne,
   onPageChange,
   onPageSizeChange,
-  onRefresh,
   onView,
   onEdit,
   onDelete
@@ -50,6 +48,8 @@ export function AccountTable({
         return <Badge variant="secondary">已锁定</Badge>;
       case 'banned':
         return <Badge variant="destructive">已封禁</Badge>;
+      case 'exported':
+        return <Badge variant="outline" className="bg-blue-50 text-blue-700 border-blue-200">已导出</Badge>;
       default:
         return <Badge variant="outline">{status}</Badge>;
     }
@@ -152,20 +152,7 @@ export function AccountTable({
               <th className="text-foreground h-10 px-2 text-left align-middle font-medium whitespace-nowrap">状态</th>
               <th className="text-foreground h-10 px-2 text-left align-middle font-medium whitespace-nowrap">备注</th>
               <th className="text-foreground h-10 px-2 text-left align-middle font-medium whitespace-nowrap">创建时间</th>
-              <th className="text-foreground h-10 px-2 text-left align-middle font-medium whitespace-nowrap w-[120px]">
-                <div className="flex items-center justify-between">
-                  <span>操作</span>
-                  <Button
-                    variant="ghost"
-                    size="sm"
-                    onClick={onRefresh}
-                    disabled={loading}
-                    className="h-6 w-6 p-0"
-                  >
-                    <RefreshCw className={`h-3 w-3 ${loading ? 'animate-spin' : ''}`} />
-                  </Button>
-                </div>
-              </th>
+              <th className="text-foreground h-10 px-2 text-left align-middle font-medium whitespace-nowrap w-[120px]">操作</th>
             </tr>
           </thead>
           <tbody>