fix: calendar button focus shadow, date range wrapping, calendar reload on view switch

- Remove FullCalendar button focus shadow to match matrix view buttons
- Allow date range text to wrap to 2 lines with smaller font
- Reload calendar data when switching back from matrix view

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/pages/clazz/index.vue

@@ -472,6 +472,14 @@ export default defineComponent({
       viewMode.value = mode;
       if (mode === 'calendar') {
         isLandscape.value = false;
+        // 从矩阵切回日历时，按日历当前可视范围加载数据
+        const api = calendar.value?.getApi?.();
+        if (api) {
+          const view = api.view;
+          state.start_date = formatDate(view.activeStart, DateFormatter.Date);
+          state.end_date = formatDate(view.activeEnd, DateFormatter.Date);
+          search();
+        }
       }
       setKey('clazz_view_mode', mode);
       if (mode === 'matrix') {
@@ -1131,6 +1139,15 @@ export default defineComponent({
     flex-shrink: 0;
   }
 
+  // 日历按钮与矩阵按钮一致，去掉焦点阴影
+  :deep(.fc .fc-button-primary:focus),
+  :deep(.fc .fc-button:focus) {
+    box-shadow: none !important;
+  }
+  :deep(.fc .fc-button-primary:not(:disabled).fc-button-active:focus) {
+    box-shadow: none !important;
+  }
+
   :deep(.fc-view-harness) {
     height: 100% !important;
     min-height: 0;
@@ -1343,11 +1360,14 @@ export default defineComponent({
 
   &__range {
     min-width: 0;
-    font-size: 0.22rem;
+    font-size: 0.2rem;
     color: #666;
-    white-space: nowrap;
+    line-height: 1.3;
-    overflow: hidden;
+    white-space: normal;
-    text-overflow: ellipsis;
+    overflow: visible;
+    display: -webkit-box;
+    -webkit-line-clamp: 2;
+    -webkit-box-orient: vertical;
   }
 
   &__nav {