fix: change x-axis date format from Chinese to English (e.g. Aug 1)

src/components/CompareChartE.vue

@@ -368,7 +368,15 @@ export default defineComponent({
           }
         },
         legend: { show: false },
-        xAxis: { type: 'time' },
+        xAxis: { 
+          type: 'time',
+          axisLabel: {
+            formatter: (value) => {
+              const date = new Date(value);
+              return date.toLocaleDateString('en-US', { month: 'short', day: 'numeric' });
+            }
+          }
+        },
         yAxis: this.mode === 'pct'
           ? {
               type: 'value', scale: true,