ui: air: render volume chart

Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: kuba-moo

ui/air.html

@@ -1238,6 +1238,7 @@ <h3 style="margin-top: 40px;">Feedback Breakdown (36-hour rolling)</h3>
                 // Update charts with filtered data
                 updateReviewChart(filteredReviews);
                 updateAveragesChart(filteredReviews);
+                updateVolumeChart(filteredReviews);
                 updateFeedbackChart(filteredReviews);
             } catch (error) {
                 console.error('Error loading charts:', error);