Add click-outside handler to close compare search results

frontend/app.js

@@ -1280,6 +1280,22 @@ function setupEventListeners() {
     }
   });
 
+  // Close compare results when clicking outside
+  document.addEventListener("click", (e) => {
+    if (!elements.compareResults.classList.contains("active")) return;
+
+    // Don't close if clicking inside the search input or results
+    if (
+      elements.compareSearch.contains(e.target) ||
+      elements.compareResults.contains(e.target)
+    ) {
+      return;
+    }
+
+    // Close the results
+    elements.compareResults.classList.remove("active");
+  });
+
   // Metric selector
   elements.metricSelect.addEventListener("change", updateComparisonChart);