Replace the landing with the artifact design and rebuild the admin in Ant Design.

Adds consultation leads, section editors, and the one-time content reset for this release.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/adm/index.html

@@ -4,7 +4,9 @@
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <meta name="robots" content="noindex,nofollow" />
-    <title>Montech Admin</title>
+    <meta name="theme-color" content="#0062f5" />
+    <link rel="icon" type="image/svg+xml" href="/logo.svg" />
+    <title>پنل مدیریت منتک</title>
   </head>
   <body>
     <div id="app"></div>