diff --git a/src-tauri/src/lib.rs b/src-tauri/src/lib.rs
index 58246dda..b2344518 100644
--- a/src-tauri/src/lib.rs
+++ b/src-tauri/src/lib.rs
@@ -1347,16 +1347,6 @@ fn resolve_tool_approval(
     Ok(crate::harness_ai_service::resolve_tool_approval(&tool_call_id, approved, result))
 }
 
-/// 前端审批完成后回调：将审批结果发送给等待中的 stream_chat loop
-#[tauri::command]
-fn resolve_tool_approval(
-    tool_call_id: String,
-    approved: bool,
-    result: Option<String>,
-) -> Result<bool, String> {
-    Ok(crate::harness_ai_service::resolve_tool_approval(&tool_call_id, approved, result))
-}
-
 #[tauri::command]
 async fn ai_completion(
     state: tauri::State<'_, AppState>,
diff --git a/src/components/Onboarding/OnboardingTour.tsx b/src/components/Onboarding/OnboardingTour.tsx
index 5a73f97a..6d995f5a 100644
--- a/src/components/Onboarding/OnboardingTour.tsx
+++ b/src/components/Onboarding/OnboardingTour.tsx
@@ -181,7 +181,7 @@ const getTourSteps = (t: (key: string) => string): any[] => {
     },
     // 步骤 4: 布局切换器（定位到布局切换按钮）
     {
-      target: '[data-testid="layout-switcher"]',
+      target: document.querySelector('[data-testid="layout-switcher"]') ? '[data-testid="layout-switcher"]' : 'body',
       content: renderMarkdown(t('onboarding.steps.layoutSwitcher')),
       title: t('onboarding.steps.layoutSwitcherTitle'),
       disableBeacon: false,
@@ -212,8 +212,8 @@ export const OnboardingTour: React.FC<OnboardingTourProps> = ({
       // 目标元素选择器（只检查静态元素）
       const targets = [
         'body',
-        '[data-testid="layout-switcher"]'
-      ];
+        document.querySelector('[data-testid="layout-switcher"]') ? '[data-testid="layout-switcher"]' : null,
+      ].filter(Boolean) as string[];
 
       // 轮询检测目标元素是否存在
       let checkInterval: NodeJS.Timeout | null = null;