1、后台系统设置settings页面增加一个开启关闭网站的按钮

2、如果网站关闭，前台页面所有请求暂时跳转单独的页如果网站关闭，前台页面所有请求暂时跳转单独的页面，页面内容 系统正在升级相关信息
3、要提供一个开发人员可以查看真实网站内容的入口

video-gen-admin/src/api/index.ts

@@ -224,6 +224,10 @@ export async function updateSystemConfig(id: string, value: string): Promise<voi
   await api.put(`/admin/system-configs/${id}`, { value });
 }
 
+export async function regenerateDevToken(): Promise<{ token: string }> {
+  return api.post('/admin/system-configs/regenerate-dev-token');
+}
+
 export async function getGlobalResourceCapacity(): Promise<ResourceCapacityConfigOut> {
   return api.get('/admin/resource-capacity/global');
 }

video-gen-admin/src/pages/AdminSettings.tsx

@@ -1,9 +1,10 @@
 import React, { useEffect, useState } from 'react';
 import {
-  Button, Card, Form, Input, InputNumber, message, Select, Space, Switch, Typography, Upload,
+  Button, Card, Form, Input, InputNumber, message, Popconfirm, Select, Space, Switch, Typography, Upload,
 } from 'antd';
 import {
   SettingOutlined, SaveOutlined, UploadOutlined, FilePdfOutlined, EyeOutlined, DatabaseOutlined,
+  PoweroffOutlined, ReloadOutlined, CopyOutlined,
 } from '@ant-design/icons';
 import {
   getGlobalResourceCapacity,
@@ -12,6 +13,7 @@ import {
   updateSystemConfig,
   uploadLogo,
   uploadPdf,
+  regenerateDevToken,
 } from '../api';
 import type { ResourceCapacityUnit, SystemConfig } from '../types';
 
@@ -42,6 +44,8 @@ const AdminSettings: React.FC = () => {
       setConfigs(data);
       const formValues: Record<string, any> = {};
       data.forEach(c => { formValues[c.key] = c.value; });
+      // 网站开关布尔值转换
+      formValues.site_enabled = siteEnabledConfig?.value !== 'false';
       formValues.resource_capacity_enabled = capacity.enabled;
       formValues.resource_capacity_limit_value = capacity.limitValue || '1.000';
       formValues.resource_capacity_limit_unit = capacity.limitUnit || 'GB';
@@ -63,6 +67,13 @@ const AdminSettings: React.FC = () => {
           await updateSystemConfig(config.id, String(newVal ?? ''));
         }
       }
+      // 保存网站开关（布尔值转为字符串）
+      if (siteEnabledConfig) {
+        const newEnabled = values.site_enabled ? 'true' : 'false';
+        if (newEnabled !== siteEnabledConfig.value) {
+          await updateSystemConfig(siteEnabledConfig.id, newEnabled);
+        }
+      }
       await saveGlobalResourceCapacity({
         enabled: !!values.resource_capacity_enabled,
         limitValue: String(values.resource_capacity_limit_value ?? '1.000'),
@@ -77,6 +88,20 @@ const AdminSettings: React.FC = () => {
     }
   };
 
+  const handleRegenerateDevToken = async () => {
+    try {
+      const result = await regenerateDevToken();
+      message.success('开发者令牌已重新生成');
+      await load();
+      // 更新显示的令牌
+      if (result?.token) {
+        form.setFieldsValue({ site_dev_access_token: result.token });
+      }
+    } catch (e: any) {
+      message.error(e?.message || '重新生成失败');
+    }
+  };
+
   const handleUpload = async (file: File, configKey: string) => {
     setUploading(configKey);
     try {
@@ -118,8 +143,11 @@ const AdminSettings: React.FC = () => {
     return false;
   };
 
+  const siteEnabledConfig = configs.find(c => c.key === 'site_enabled');
+  const devTokenConfig = configs.find(c => c.key === 'site_dev_access_token');
+
   const groupedConfigs: Record<string, SystemConfig[]> = {
-    '站点信息': configs.filter(c => c.key.startsWith('site_')),
+    '站点信息': configs.filter(c => c.key.startsWith('site_') && c.key !== 'site_enabled' && c.key !== 'site_dev_access_token'),
     '协议配置': configs.filter(c => c.key === 'user_agreement_privacy_url'),
     'SEO 设置': configs.filter(c => c.key.startsWith('seo_')),
     '用户积分配置': configs.filter(c => c.key.startsWith('user_') && c.key.includes('credits')),
@@ -297,6 +325,61 @@ const AdminSettings: React.FC = () => {
         </div>
 
         <Form form={form} layout="vertical">
+          {/* 网站访问控制 */}
+          <div style={{ marginBottom: 24 }}>
+            <Typography.Text strong style={{ fontSize: 14, display: 'block', marginBottom: 12, paddingBottom: 8, borderBottom: '1px solid #f0f0f5' }}>
+              访问控制
+            </Typography.Text>
+            {siteEnabledConfig ? (
+              <Form.Item
+                name="site_enabled"
+                label="网站访问开关"
+                valuePropName="checked"
+                extra="关闭后前台所有用户将被重定向到维护页面（管理员仍可登录后台管理）"
+              >
+                <Switch checkedChildren="网站开启" unCheckedChildren="网站关闭" />
+              </Form.Item>
+            ) : (
+              <Typography.Text type="secondary" style={{ fontSize: 13 }}>
+                系统配置 site_enabled 未初始化，请通过数据库手动添加。
+              </Typography.Text>
+            )}
+
+            {devTokenConfig && (
+              <Form.Item
+                label="开发者访问令牌"
+                extra="网站关闭时，在维护页面输入此令牌可正常访问前台内容。令牌仅管理员可见。"
+              >
+                <Space.Compact style={{ width: '100%' }}>
+                  <Input.Password
+                    name="site_dev_access_token"
+                    readOnly
+                    value={devTokenConfig.value}
+                    style={{ fontFamily: 'monospace' }}
+                  />
+                  <Button
+                    icon={<CopyOutlined />}
+                    onClick={() => {
+                      navigator.clipboard.writeText(devTokenConfig.value);
+                      message.success('已复制到剪贴板');
+                    }}
+                  >
+                    复制
+                  </Button>
+                  <Popconfirm
+                    title="重新生成令牌？"
+                    description="重新生成后旧令牌将立即失效，需要重新复制新令牌。"
+                    onConfirm={handleRegenerateDevToken}
+                    okText="确认"
+                    cancelText="取消"
+                  >
+                    <Button icon={<ReloadOutlined />} danger>重新生成</Button>
+                  </Popconfirm>
+                </Space.Compact>
+              </Form.Item>
+            )}
+          </div>
+
           {Object.entries(groupedConfigs).map(([group, items]) => (
             <div key={group} style={{ marginBottom: 24 }}>
               <Typography.Text strong style={{ fontSize: 14, display: 'block', marginBottom: 12, paddingBottom: 8, borderBottom: '1px solid #f0f0f5' }}>