fix: LDAP导入弹框OU列表和用户列表解析失败

根因: 后端 ou-list/user-list API 直接返回数组, 前端错误地从 res.ous/res.users 取值
- loadLdapOus: Array.isArray(res) 兼容处理
- loadLdapUsers: Array.isArray(res) 兼容处理
- LDAP用户显示字段: cn/uid/mail 替代 nickname/username/email

frontend/src/pages/UsersPage.tsx

@@ -960,7 +960,7 @@ function BatchImportModal({ onClose, onImported }: { onClose: () => void; onImpo
     setLdapLoading(true);
     try {
       const res = await ldapApi.listOus() as any;
-      setLdapOus(res?.ous || []);
+      setLdapOus(Array.isArray(res) ? res : (res?.ous || res?.data || []));
     } catch { toast('error', '加载 LDAP OU 失败'); }
     finally { setLdapLoading(false); }
   };
@@ -969,7 +969,7 @@ function BatchImportModal({ onClose, onImported }: { onClose: () => void; onImpo
     setLdapLoading(true);
     try {
       const res = await ldapApi.listUsers({ base_dn: baseDn }) as any;
-      setLdapUsers(res?.users || []);
+      setLdapUsers(Array.isArray(res) ? res : (res?.users || res?.data || []));
     } catch { toast('error', '加载 LDAP 用户失败'); }
     finally { setLdapLoading(false); }
   };
@@ -1201,9 +1201,9 @@ function BatchImportModal({ onClose, onImported }: { onClose: () => void; onImpo
                   {ldapUsers.map(u => (
                     <label key={u.dn} className="flex items-center gap-3 px-3 py-2 rounded-lg hover:bg-[var(--dg-bg-hover)] cursor-pointer">
                       <input type="checkbox" checked={selectedLdapUsers.has(u.dn)} onChange={() => setSelectedLdapUsers(prev => { const n = new Set(prev); n.has(u.dn) ? n.delete(u.dn) : n.add(u.dn); return n; })} />
-                      <span className="text-sm font-medium">{u.nickname || u.username}</span>
-                      <span className="text-xs text-[var(--dg-text-muted)]">@{u.username}</span>
-                      {u.email && <span className="text-xs text-[var(--dg-text-muted)]">{u.email}</span>}
+                      <span className="text-sm font-medium">{u.cn || u.nickname || u.uid}</span>
+                      <span className="text-xs text-[var(--dg-text-muted)]">@{u.uid || u.username}</span>
+                      {u.mail && <span className="text-xs text-[var(--dg-text-muted)]">{u.mail}</span>}
                     </label>
                   ))}
                 </div>