fix(admin): UX improvements — silent fetch failures, empty states, batch loading guards, dashboard refresh

- Replace console.error-only catches with message.error user-facing notifications
  across Bills, Classes, ClassroomRentals, ClassroomSchedule, Classrooms, Deposits,
  Expenses, OperationLogs, Permissions, Roles, RoomVisual, Rooms, Students,
  Tenants, Users
- Add Empty component via Table locale prop on list pages: Bills, Classes,
  ClassroomRentals, Classrooms, Deposits, Expenses (room+personal), Occupancies,
  Rooms, Students, Tenants, Roles
- Add batchLoading state to batch delete/update operations: Bills (batchDelete,
  batchUpdateStatus), Expenses (batchDeleteRoom, batchDeletePersonal),
  Occupancies (batchCheckOut, batchDelete), Rooms (batchDelete),
  Students (batchDelete)
- Add refreshLoading indicator to Dashboard header when re-fetching data
- Consistent error pattern: catch (e: unknown) { const err = e as { message?: string }; message.error(...); }

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

@@ -15,6 +15,7 @@ import {
   Upload,
   Drawer,
   Tabs,
+  Empty,
 } from 'antd';
 import type { UploadRequestError, UploadRequestOption } from '@rc-component/upload/lib/interface';
 import {
@@ -88,8 +89,10 @@ const RoomsPage: React.FC = () => {
   const [lockerForm] = Form.useForm();
   const [savingBed, setSavingBed] = useState(false);
   const [savingLocker, setSavingLocker] = useState(false);
+  const [batchLoading, setBatchLoading] = useState(false);
 
   const handleBatchDelete = async () => {
+    setBatchLoading(true);
     try {
       const res: any = await api.post('/rooms/batch-delete', { ids: selectedRowKeys });
       message.success(res?.message || `已批量归档 ${selectedRowKeys.length} 间`);
@@ -97,6 +100,8 @@ const RoomsPage: React.FC = () => {
       fetchData();
     } catch (e: any) {
       message.error(e?.message || '批量归档失败');
+    } finally {
+      setBatchLoading(false);
     }
   };
 
@@ -109,8 +114,9 @@ const RoomsPage: React.FC = () => {
       setArchivedCount(archived.length);
       const filtered = showArchived ? res : res.filter((r: any) => r.status !== 'archived');
       setData(filtered);
-    } catch (e) {
-      console.error(e);
+    } catch (e: unknown) {
+      const err = e as { message?: string };
+      message.error(err?.message || '加载失败，请稍后重试');
     }
     setLoading(false);
   };
@@ -162,14 +168,20 @@ const RoomsPage: React.FC = () => {
     try {
       const res = await api.get(`/rooms/${roomId}/beds`);
       setBeds(res);
-    } catch (e) { console.error(e); }
+    } catch (e: unknown) {
+      const err = e as { message?: string };
+      message.error(err?.message || '加载床位失败');
+    }
   }, []);
 
   const fetchLockers = useCallback(async (roomId: number) => {
     try {
       const res = await api.get(`/rooms/${roomId}/lockers`);
       setLockers(res);
-    } catch (e) { console.error(e); }
+    } catch (e: unknown) {
+      const err = e as { message?: string };
+      message.error(err?.message || '加载柜子失败');
+    }
   }, []);
 
   const handleSaveBed = async () => {
@@ -425,7 +437,13 @@ const RoomsPage: React.FC = () => {
             cancelText="取消"
             disabled={selectedRowKeys.length === 0}
           >
-            <PermissionButton permission="room:delete" danger icon={<DeleteOutlined />} disabled={selectedRowKeys.length === 0}>
+            <PermissionButton
+              permission="room:delete"
+              danger
+              icon={<DeleteOutlined />}
+              disabled={selectedRowKeys.length === 0}
+              loading={batchLoading}
+            >
               批量归档
             </PermissionButton>
           </Popconfirm>
@@ -486,6 +504,7 @@ const RoomsPage: React.FC = () => {
         rowKey="id"
         scroll={{ x: 1200 }}
         loading={loading}
+        locale={{ emptyText: <Empty description="暂无数据" /> }}
         pagination={{ pageSize: 20, showTotal: (total) => `共 ${total} 间` }}
         rowClassName={(record) => (record.status === 'archived' ? 'archived-row' : '')}
         rowSelection={{