refactor: CalendarPanel 性能优化，统一弹窗状态管理

src/views/Dashboard/components/CalendarPanel.tsx

@@ -108,27 +108,28 @@ export const CalendarPanel: React.FC = () => {
 
   return (
     <Box>
-      <Box height={{ base: '400px', md: '560px' }}>
+      <Box height={{ base: '380px', md: '560px' }}>
         <FullCalendar
           plugins={[dayGridPlugin, interactionPlugin]}
           initialView="dayGridMonth"
           locale="zh-cn"
           headerToolbar={{
-            left: 'prev,next today',
-            center: 'title',
+            left: 'prev,next',
+            center: 'today',
             right: ''
           }}
           events={calendarEvents}
           dateClick={handleDateClick}
           eventClick={handleEventClick}
           height="100%"
-          dayMaxEvents={2}
-          moreLinkText="更多"
+          dayMaxEvents={1}
+          moreLinkText="+更多"
           buttonText={{
             today: '今天',
             month: '月',
             week: '周'
           }}
+          titleFormat={{ year: 'numeric', month: 'long' }}
         />
       </Box>