show main page by default.

public/js/calendar.js

@@ -52,6 +52,8 @@ export default class CalendarView {
 
   async loadData() {
     if (!state.currentServer || !state.token) {
+      // No server or token, just render calendar without loading
+      this.renderCalendar();
       return;
     }
 
@@ -74,6 +76,8 @@ export default class CalendarView {
         return;
       }
       showToast(error.message || '加载失败', 'error');
+      // Still render the calendar even if loading fails
+      this.renderCalendar();
     }
   }