fix(ui): center float QR titles and repair UC VIP layout

assets/js/widget-set.js

@@ -476,7 +476,11 @@
     wrap.querySelectorAll('.float-btn-qrcode').forEach(function (node) {
       if (node.dataset.qrReady === '1') return;
 
-      var qrText = node.getAttribute('data-qr-text') || window.location.href;
+      // footer.php uses data-qrcode-url; keep data-qr-text as fallback alias
+      var qrText =
+        node.getAttribute('data-qrcode-url') ||
+        node.getAttribute('data-qr-text') ||
+        window.location.href;
       var qrSize = parseInt(node.getAttribute('data-qr-size') || '120', 10);
       if (!qrText || !qrSize) return;