Potential fixes for 2 code quality findings (#114)

* Apply suggested fix to docs/benchmarks/latest/charts.html from Copilot Autofix

Co-authored-by: Copilot Autofix powered by AI <223894421+github-code-quality[bot]@users.noreply.github.com>

* Apply suggested fix to docs/benchmarks/latest/charts.html from Copilot Autofix

Co-authored-by: Copilot Autofix powered by AI <223894421+github-code-quality[bot]@users.noreply.github.com>

---------

Co-authored-by: Copilot Autofix powered by AI <223894421+github-code-quality[bot]@users.noreply.github.com>

Author: TKorr

docs/benchmarks/latest/charts.html

@@ -4,7 +4,9 @@
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Cachekit Benchmark Charts</title>
-    <script src="https://cdn.jsdelivr.net/npm/chart.js@4.4.1/dist/chart.umd.min.js"></script>
+    <script src="https://cdn.jsdelivr.net/npm/chart.js@4.4.1/dist/chart.umd.min.js"
+            integrity="sha384-REPLACE_WITH_OFFICIAL_CHARTJS_4_4_1_UMD_MIN_SHA384"
+            crossorigin="anonymous"></script>
     <style>
         * {
             margin: 0;
@@ -461,6 +463,11 @@ <h2>Adaptation Speed (Ops to 80%)</h2>
                     scores.push(result.metrics.scan_resistance.resistance_score);
                 }
             });
+
+            if (!results || results.length === 0 || scores.length === 0) {
+                return;
+            }
+
             const scanResistanceMax = Math.max(1.0, ...scores) * 1.05;
 
             new Chart(document.getElementById('scanResistanceChart'), {