fix: harden permission-gated UI — minimum-org endpoint, modal/Popconfirm fail-closed on revocation

apps/admin/src/pages/Exams/detail.tsx

@@ -27,8 +27,8 @@ interface ExamDetail extends ExamItem {
 }
 
 const PhoneCell: React.FC<{ row: ScoreRow }> = ({ row }) => {
-  const reveal = useViewSensitive(row.studentId, '考试管理', hasPermission('log:create'));
   const { hasPermission } = usePermission();
+  const reveal = useViewSensitive(row.studentId, '考试管理', hasPermission('log:create'));
   if (!row.phone) return <>-</>;
   return (
     <Space size={4}>

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

@@ -1,4 +1,4 @@
-import React, { useEffect, useState, useMemo, useCallback, useRef } from 'react';
+import React, { useEffect, useState, useMemo, useCallback } from 'react';
 import {
   Table,
   Button,
@@ -594,25 +594,25 @@ const OccupanciesPage: React.FC = () => {
                 >
                   批量退宿
                 </PermissionButton>
-              </>)}
-              {canDelete ? (
-                <Popconfirm
-                  title={`确定归档选中的 ${selectedRowKeys.length} 条入住记录？在住记录会自动跳过`}
-                  onConfirm={handleBatchDelete}
-                  okText="归档"
-                  cancelText="取消"
-                >
-                  <Button
-                    danger
-                    size="small"
-                    icon={<InboxOutlined />}
-                    style={{ marginLeft: 12 }}
-                    loading={batchLoading}
+              ) : (
+                canDelete ? (
+                  <Popconfirm
+                    title={`确定归档选中的 ${selectedRowKeys.length} 条入住记录？在住记录会自动跳过`}
+                    onConfirm={handleBatchDelete}
+                    okText="归档"
+                    cancelText="取消"
                   >
-                    批量归档
-                  </Button>
-                </Popconfirm>
-              ) : null}
+                    <Button
+                      danger
+                      size="small"
+                      icon={<InboxOutlined />}
+                      style={{ marginLeft: 12 }}
+                      loading={batchLoading}
+                    >
+                      批量归档
+                    </Button>
+                  </Popconfirm>
+                ) : null
               )}
               <Button size="small" onClick={() => setSelectedRowKeys([])} style={{ marginLeft: 8 }}>
                 取消选择

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

@@ -1,4 +1,4 @@
-import React, { useCallback, useEffect, useMemo, useRef, useState } from 'react';
+import React, { useCallback, useEffect, useMemo, useState } from 'react';
 import {
   Alert,
   App,