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<!-- Defer non-critical scripts --> <script defer src="main.js"></script> <script async src="analytics.js"></script> <!-- Preload critical scripts --> <link rel="preload" href="critical.js" as="script"> <!-- Lazy load heavy libraries --> <script> button.addEventListener("click", async () => { const { Chart } = await import("./chart.js"); new Chart(canvas, config); }); </script>
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