diff --git a/client/lib/screens/settings/license_panel.dart b/client/lib/screens/settings/license_panel.dart
index c541be7..51b8682 100644
--- a/client/lib/screens/settings/license_panel.dart
+++ b/client/lib/screens/settings/license_panel.dart
@@ -18,7 +18,6 @@ import '../../core/utils/clock.dart';
 import '../../providers/license_provider.dart';
 import '../../widgets/ds/ds_atoms.dart';
 import '../../widgets/ds/ds_toast.dart';
-import '../../widgets/write_guard.dart';
 import 'settings_card.dart';
 
 class LicensePanel extends ConsumerStatefulWidget {
@@ -123,11 +122,12 @@ class _LicensePanelState extends ConsumerState<LicensePanel> {
                   ),
                 ),
                 const SizedBox(width: 10),
-                WriteGuard(
-                  child: DsButton(_redeeming ? '兑换中…' : '兑换续期',
-                      variant: DsBtnVariant.primary,
-                      onPressed: _redeeming ? null : _redeem),
-                ),
+                // 激活/兑换是过期后的「自救出口」：后端 /license/* 豁免 LicenseGuard，
+                // 故此按钮不受授权相位(readonly/locked)只读锁约束，绝不能包 WriteGuard；
+                // role=readonly 用户由后端 ReadOnly() 403 + toast 兜底。
+                DsButton(_redeeming ? '兑换中…' : '兑换续期',
+                    variant: DsBtnVariant.primary,
+                    onPressed: _redeeming ? null : _redeem),
               ],
             ),
           ),