style(CollapsibleCalendar): 调整日历操作按钮的布局和间距

 <!--
  * @Date: 2025-01-25 15:34:17
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-12-18 22:06:48
+ * @LastEditTime: 2025-12-18 22:13:17
  * @FilePath: /mlaj/src/components/ui/CollapsibleCalendar.vue
  * @Description: 可折叠日历组件
 -->
@@ -428,9 +428,9 @@ defineExpose({
         .calendar-action {
             display: flex;
             align-items: center;
-            gap: 8px;
+            justify-content: end;
             background: linear-gradient(135deg, rgba(76, 175, 80, 0.1) 0%, rgba(76, 175, 80, 0.05) 100%);
-            padding: 8px 12px;
+            padding: 8px;
             border-radius: 20px;
             border: 1px solid rgba(76, 175, 80, 0.2);
             flex-shrink: 0;