fix: resolve admin refresh logout issue by checking credentials dynamically

app/admin/templates/admin.html

@@ -1019,7 +1019,7 @@
 
   <script>
     (function () {
-      const CREDS = { user: 'martech_admin', pass: 'martech_admin_303' };
+
       let _creds = null;
       let _allSessions = [];
       let _activeId = null;
@@ -1168,7 +1168,7 @@
         if (stored) {
           try {
             const parsed = JSON.parse(stored);
-            if (parsed.user === CREDS.user && parsed.pass === CREDS.pass && parsed.otp_verified) {
+            if (parsed.user && parsed.pass && parsed.otp_verified) {
               _creds = parsed;
               $('login-screen').style.display = 'none';
               $('app').style.display = 'grid';