feat: 悬挂ICP备案号，修复验证码、500登录、/admin Failed to Fetch，优化首页编辑器100%全屏平铺

client/src/pages/Profile.jsx

@@ -16,7 +16,7 @@ export default function Profile() {
   const [smtpEnabled, setSmtpEnabled] = useState(false);
 
   useEffect(() => {
-    fetch('http://localhost:3001/api/sys/config')
+    fetch('/api/sys/config')
       .then(res => res.json())
       .then(data => {
         if (data && data.smtp_enabled !== undefined) {
@@ -37,7 +37,7 @@ export default function Profile() {
     setLoadingCode(true);
     try {
       const token = localStorage.getItem('token');
-      const res = await fetch('http://localhost:3001/api/auth/send-code', {
+      const res = await fetch('/api/auth/send-code', {
         method: 'POST',
         headers: { Authorization: `Bearer ${token}` }
       });
@@ -69,7 +69,7 @@ export default function Profile() {
     setLoadingSubmit(true);
     try {
       const token = localStorage.getItem('token');
-      const res = await fetch('http://localhost:3001/api/auth/update-profile', {
+      const res = await fetch('/api/auth/update-profile', {
         method: 'POST',
         headers: { 
           'Content-Type': 'application/json',