feat: integrate classroom real-time occupancy with schedule and rental data

apps/admin/src/pages/Classrooms/index.tsx

@@ -12,6 +12,7 @@ import {
   Tag,
   Popconfirm,
   Upload,
+  Tooltip,
 } from 'antd';
 import {
   PlusOutlined,
@@ -25,9 +26,18 @@ import PermissionButton from '../../components/PermissionButton';
 
 const statusMap: Record<string, { text: string; color: string }> = {
   available: { text: '可用', color: 'green' },
+  in_use: { text: '使用中', color: 'blue' },
+  maintenance: { text: '维护中', color: 'orange' },
   archived: { text: '已归档', color: '#999' },
 };
 
+interface CurrentUsage {
+  type: 'schedule' | 'rental';
+  title: string;
+  startTime: string;
+  endTime: string;
+}
+
 const typeColor: Record<string, string> = {
   大: 'volcano',
   次大: 'geekblue',
@@ -142,7 +152,14 @@ const ClassroomsPage: React.FC = () => {
     {
       title: '状态',
       dataIndex: 'status',
-      render: (s: string) => <Tag color={statusMap[s]?.color}>{statusMap[s]?.text || s}</Tag>,
+      render: (s: string, record: { currentUsage?: CurrentUsage | null }) => {
+        const effectiveStatus = record.currentUsage ? 'in_use' : s;
+        return (
+          <Tooltip title={record.currentUsage ? `${record.currentUsage.title} (${record.currentUsage.startTime}-${record.currentUsage.endTime})` : undefined}>
+            <Tag color={statusMap[effectiveStatus]?.color}>{statusMap[effectiveStatus]?.text || s}</Tag>
+          </Tooltip>
+        );
+      },
     },
     {
       title: '操作',