fix: always set iframe src outside @if block, delay Nitro loading by 500ms

resources/themes/dusk/views/client/nitro.blade.php

@@ -670,7 +670,7 @@
         if (iframe) {
             iframe.addEventListener('load', function() {
                 var elapsed = Date.now() - startTime;
-                var minWait = Math.max(0, 5000 - elapsed);
+                var minWait = Math.max(0, 4500 - elapsed);
                 setTimeout(hideOverlay, minWait);
             });
         }
@@ -679,9 +679,20 @@
     </script>
     @endif
 
-    <iframe id="nitro" src="{{ $nitroUrl }}"
+    <iframe id="nitro" src="about:blank" data-src="{{ $nitroUrl }}"
         class="absolute top-0 left-0 m-0 h-full w-full overflow-hidden border-none p-0"></iframe>
 
+    <script>
+    (function() {
+        var iframe = document.getElementById('nitro');
+        if (iframe && (!iframe.src || iframe.src === 'about:blank')) {
+            setTimeout(function() {
+                iframe.src = iframe.getAttribute('data-src');
+            }, 500);
+        }
+    })();
+    </script>
+
     {{-- Disconnected Message --}}
     <div id="disconnected" class="hidden" style="position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: 10000;">
         <div style="position: absolute; width: 100%; height: 100%; background: rgba(0,0,0,0.7);"></div>