Allow Paystack checkout iframes to use fullscreen in POS.

Patch Inline iframes after mount so fullscreen/payment permissions work
inside the POS payment bottomsheet.

resources/views/partials/paystack-sheet.blade.php

@@ -147,6 +147,48 @@
         activePopup = null;
     }
 
+    function ensurePaystackIframePermissions(root) {
+        try {
+            var nodes = (root || document).querySelectorAll(
+                'iframe[src*="checkout.paystack.com"], iframe[id^="inline-checkout"], iframe[id^="inline-background"], iframe[src*="paystack"]'
+            );
+            nodes.forEach(function (iframe) {
+                var allow = (iframe.getAttribute('allow') || '').trim();
+                var needed = ['payment', 'fullscreen', 'clipboard-read', 'clipboard-write'];
+                var parts = allow ? allow.split(';').map(function (p) { return p.trim(); }).filter(Boolean) : [];
+                var lower = parts.map(function (p) { return p.toLowerCase(); });
+                needed.forEach(function (perm) {
+                    if (!lower.some(function (p) { return p === perm || p.indexOf(perm + ' ') === 0; })) {
+                        parts.push(perm);
+                    }
+                });
+                iframe.setAttribute('allow', parts.join('; '));
+                if (!iframe.hasAttribute('allowfullscreen')) {
+                    iframe.setAttribute('allowfullscreen', '');
+                }
+            });
+        } catch (e) {}
+    }
+
+    function watchPaystackIframes() {
+        if (window.__ladillPaystackIframeWatch) return;
+        window.__ladillPaystackIframeWatch = true;
+        ensurePaystackIframePermissions(document);
+        try {
+            var obs = new MutationObserver(function (mutations) {
+                for (var i = 0; i < mutations.length; i++) {
+                    var m = mutations[i];
+                    if (m.addedNodes && m.addedNodes.length) {
+                        ensurePaystackIframePermissions(document);
+                        break;
+                    }
+                }
+            });
+            obs.observe(document.documentElement || document.body, { childList: true, subtree: true });
+        } catch (e) {}
+    }
+
+
     function createStoreDefinition() {
         return {
             frameable: false,
@@ -224,10 +266,12 @@
                     cancelInline();
                     var popup = new PaystackPop();
                     activePopup = popup;
+                    watchPaystackIframes();
                     popup.resumeTransaction(accessCode, {
                         onLoad: function () {
                             if (token !== store._launchToken) return;
                             store.launching = false;
+                            ensurePaystackIframePermissions(document);
                         },
                         onSuccess: function (transaction) {
                             if (token !== store._launchToken) return;
@@ -283,6 +327,8 @@
         ensureStore();
     }
 
+    watchPaystackIframes();
+
     window.LadillPayCheckout = {
         isFrameable: isFrameable,
         isPaystackCheckoutUrl: isPaystackCheckoutUrl,
@@ -384,7 +430,7 @@
                     :src="showSheet && $store.ladillPayCheckout && $store.ladillPayCheckout.frameable ? checkoutUrl : ''"
                     class="h-full min-h-[60dvh] w-full border-0 md:min-h-0"
                     style="min-height: 28rem"
-                    allow="payment *"
+                    allow="payment *; fullscreen *; clipboard-read *; clipboard-write *"
                     title="{{ $iframeTitle }}"></iframe>
 
             <div x-show="!$store.ladillPayCheckout || !$store.ladillPayCheckout.frameable"