path correction

src/admin/App.jsx

@@ -121,7 +121,7 @@ function LoginPreview() {
             style={{ width: previewWidth * scale, height: previewHeight * scale }}
           >
             <iframe
-              src={BASE}
+              src={`${BASE}preview.html`}
               title="Website preview"
               className="login-preview-iframe"
               style={{

src/admin/api.js

@@ -1,4 +1,4 @@
-const API_BASE = import.meta.env.VITE_API_BASE || '';
+import { API_BASE } from '../lib/apiBase';
 
 export function getToken() {
   return localStorage.getItem('admin_token');

src/admin/components/SectionPreview.jsx

@@ -31,7 +31,7 @@ export function buildPreviewContent(baseContent, section, sectionData) {
   return merged;
 }
 
-const PREVIEW_SRC = '/preview.html';
+const PREVIEW_SRC = `${import.meta.env.BASE_URL}preview.html`;
 const PREVIEW_WIDTH = 1440;
 const PREVIEW_HEIGHT = 900;
 
@@ -134,7 +134,7 @@ export function SectionPreview({ section, label, content, sectionData }) {
           <h3>{label}</h3>
         </div>
         <a
-          href={`/#${anchor}`}
+          href={`${import.meta.env.BASE_URL}#${anchor}`}
           target="_blank"
           rel="noopener noreferrer"
           className="admin-preview-open"