diff --git a/lib/widgets/assistant_artifact_sidebar.dart b/lib/widgets/assistant_artifact_sidebar.dart
index a1530d2d..fd1f1a94 100644
--- a/lib/widgets/assistant_artifact_sidebar.dart
+++ b/lib/widgets/assistant_artifact_sidebar.dart
@@ -211,28 +211,6 @@ class _AssistantArtifactSidebarState extends State<AssistantArtifactSidebar> {
                                     size: 14,
                                   ),
                                 ),
-                                if (canOpenWorkspace)
-                                  IconButton(
-                                    key: const Key(
-                                      'assistant-artifact-pane-open-workspace-ref',
-                                    ),
-                                    tooltip: appText(
-                                      '在文件浏览器中打开',
-                                      'Open in file browser',
-                                    ),
-                                    visualDensity: VisualDensity.compact,
-                                    padding: EdgeInsets.zero,
-                                    constraints: const BoxConstraints(
-                                      minWidth: 24,
-                                      minHeight: 24,
-                                    ),
-                                    onPressed: () =>
-                                        unawaited(_openWorkspace()),
-                                    icon: const Icon(
-                                      Icons.open_in_new_rounded,
-                                      size: 14,
-                                    ),
-                                  ),
                               ],
                             ),
                           ),
diff --git a/test/widgets/assistant_artifact_sidebar_test.dart b/test/widgets/assistant_artifact_sidebar_test.dart
index 227b1c01..e51391b2 100644
--- a/test/widgets/assistant_artifact_sidebar_test.dart
+++ b/test/widgets/assistant_artifact_sidebar_test.dart
@@ -117,10 +117,9 @@ void main() {
     expect(find.text('HTML Preview'), findsOneWidget);
   });
 
-  testWidgets('AssistantArtifactSidebar copies and opens local workspace paths', (
+  testWidgets('AssistantArtifactSidebar copies local workspace paths', (
     WidgetTester tester,
   ) async {
-    var openCount = 0;
     final snapshot = AssistantArtifactSnapshot(
       workspaceRef: '/tmp/thread',
       workspaceRefKind: WorkspaceRefKind.localPath,
@@ -132,9 +131,7 @@ void main() {
       tester,
       snapshot: snapshot,
       previewForEntry: (_) => const AssistantArtifactPreview.empty(),
-      onOpenWorkspace: () async {
-        openCount += 1;
-      },
+      onOpenWorkspace: () async {},
     );
 
     final copyButton = tester.widget<IconButton>(
@@ -143,13 +140,9 @@ void main() {
       ),
     );
     copyButton.onPressed!.call();
-
-    final openButton = tester.widget<IconButton>(
-      find.byKey(
-        const Key('assistant-artifact-pane-open-workspace-ref'),
-      ),
+    expect(
+      find.byKey(const Key('assistant-artifact-pane-open-workspace-ref')),
+      findsNothing,
     );
-    openButton.onPressed!.call();
-    expect(openCount, 1);
   });
 }