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<!-- Async load with fallback --> <script async src="https://code.jquery.com/jquery-3.7.1.min.js" integrity="sha384-..." crossorigin="anonymous" onload="window.jQuery || document.write('<script src=\"/js/jquery.min.js\"></s' + 'cript>')"> </script> <!-- Defer to avoid render-blocking --> <script defer src="/js/jquery.min.js"></script> <script defer src="/js/app.js"></script> <!-- Never block render with synchronous script in <head> -->
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