feat: add xugou link

frontend/.env.example

@@ -1,8 +1,8 @@
 # 邮箱域名配置
-VITE_EMAIL_DOMAIN=mdzz.uk
+VITE_EMAIL_DOMAIN=example.com
 
 # API地址配置
-VITE_API_BASE_URL=https://api.mail.mdzz.uk
+VITE_API_BASE_URL=https://api.example.com
 
 # 其他配置
 VITE_API_URL=/api 

frontend/i18n/locales/en.json

@@ -21,7 +21,8 @@
     "unknown": "Unknown",
     "empty": "No data",
     "blog": "Blog",
-    "youtube": "YouTube"
+    "youtube": "YouTube",
+    "xugouMonitor": "Xugou Monitor"
   },
   "mailbox": {
     "createRandom": "Create Random Mailbox",

frontend/i18n/locales/zh-CN.json

@@ -21,7 +21,8 @@
     "unknown": "未知",
     "empty": "暂无数据",
     "blog": "博客",
-    "youtube": "油管频道"
+    "youtube": "油管频道",
+    "xugouMonitor": "xugou监控"
   },
   "mailbox": {
     "createRandom": "创建随机邮箱",

frontend/src/components/Footer.tsx

@@ -30,6 +30,15 @@ const Footer: React.FC = () => {
               <i className="fab fa-youtube mr-1"></i>
               {t('common.youtube')}
             </a>
+            <a 
+              href="https://xugou.mdzz.uk" 
+              target="_blank" 
+              rel="noopener noreferrer"
+              className="hover:text-primary transition-colors"
+            >
+              <i className="fas fa-chart-line mr-1"></i>
+              {t('common.xugouMonitor')}
+            </a>
           </div>
         </div>
       </Container>

frontend/src/config.ts

@@ -1,10 +1,10 @@
 // 配置文件，用于管理域名和API地址设置
 
 // 邮箱域名配置
-export const EMAIL_DOMAIN = import.meta.env.VITE_EMAIL_DOMAIN || 'mdzz.uk';
+export const EMAIL_DOMAIN = import.meta.env.VITE_EMAIL_DOMAIN;
 
 // API地址配置
-export const API_BASE_URL = import.meta.env.VITE_API_BASE_URL || 'https://api.mail.mdzz.uk';
+export const API_BASE_URL = import.meta.env.VITE_API_BASE_URL;
 
 // 其他配置
 export const DEFAULT_AUTO_REFRESH = false;