fix(clipboard): add fallback helper and unify copy actions

src/components/config/VisualConfigEditor.tsx

@@ -8,6 +8,7 @@ import { IconChevronDown } from '@/components/ui/icons';
 import { ConfigSection } from '@/components/config/ConfigSection';
 import { useNotificationStore } from '@/stores';
 import styles from './VisualConfigEditor.module.scss';
+import { copyToClipboard } from '@/utils/clipboard';
 import type {
   PayloadFilterRule,
   PayloadModelEntry,
@@ -268,31 +269,11 @@ function ApiKeysCardEditor({
   };
 
   const handleCopy = async (apiKey: string) => {
-    const copyByExecCommand = () => {
-      const textarea = document.createElement('textarea');
-      textarea.value = apiKey;
-      textarea.setAttribute('readonly', '');
-      textarea.style.position = 'fixed';
-      textarea.style.opacity = '0';
-      textarea.style.pointerEvents = 'none';
-      document.body.appendChild(textarea);
-      textarea.select();
-      textarea.setSelectionRange(0, textarea.value.length);
-      const copied = document.execCommand('copy');
-      document.body.removeChild(textarea);
-      if (!copied) throw new Error('copy_failed');
-    };
-
-    try {
-      if (navigator.clipboard?.writeText) {
-        await navigator.clipboard.writeText(apiKey);
-      } else {
-        copyByExecCommand();
-      }
-      showNotification(t('notification.link_copied'), 'success');
-    } catch {
-      showNotification(t('notification.copy_failed'), 'error');
-    }
+    const copied = await copyToClipboard(apiKey);
+    showNotification(
+      t(copied ? 'notification.link_copied' : 'notification.copy_failed'),
+      copied ? 'success' : 'error'
+    );
   };
 
   return (

src/pages/AuthFilesPage.tsx

@@ -8,7 +8,7 @@ import { Card } from '@/components/ui/Card';
 import { Button } from '@/components/ui/Button';
 import { Input } from '@/components/ui/Input';
 import { EmptyState } from '@/components/ui/EmptyState';
-import { copyToClipboard } from '@/features/authFiles/clipboard';
+import { copyToClipboard } from '@/utils/clipboard';
 import {
   MAX_CARD_PAGE_SIZE,
   MIN_CARD_PAGE_SIZE,
@@ -523,4 +523,3 @@ export function AuthFilesPage() {
     </div>
   );
 }
-

src/pages/LogsPage.tsx

@@ -20,6 +20,7 @@ import {
 import { useHeaderRefresh } from '@/hooks/useHeaderRefresh';
 import { useAuthStore, useConfigStore, useNotificationStore } from '@/stores';
 import { logsApi } from '@/services/api/logs';
+import { copyToClipboard } from '@/utils/clipboard';
 import { MANAGEMENT_API_PREFIX } from '@/utils/constants';
 import { formatUnixTimestamp } from '@/utils/format';
 import styles from './LogsPage.module.scss';
@@ -344,30 +345,6 @@ const getErrorMessage = (err: unknown): string => {
   return typeof message === 'string' ? message : '';
 };
 
-const copyToClipboard = async (text: string) => {
-  try {
-    await navigator.clipboard.writeText(text);
-    return true;
-  } catch {
-    try {
-      const textarea = document.createElement('textarea');
-      textarea.value = text;
-      textarea.style.position = 'fixed';
-      textarea.style.opacity = '0';
-      textarea.style.left = '-9999px';
-      textarea.style.top = '0';
-      document.body.appendChild(textarea);
-      textarea.focus();
-      textarea.select();
-      const ok = document.execCommand('copy');
-      document.body.removeChild(textarea);
-      return ok;
-    } catch {
-      return false;
-    }
-  }
-};
-
 type TabType = 'logs' | 'errors';
 
 export function LogsPage() {

src/pages/OAuthPage.tsx

@@ -6,6 +6,7 @@ import { Input } from '@/components/ui/Input';
 import { useNotificationStore, useThemeStore } from '@/stores';
 import { oauthApi, type OAuthProvider, type IFlowCookieAuthResponse } from '@/services/api/oauth';
 import { vertexApi, type VertexImportResponse } from '@/services/api/vertex';
+import { copyToClipboard } from '@/utils/clipboard';
 import styles from './OAuthPage.module.scss';
 import iconCodexLight from '@/assets/icons/codex_light.svg';
 import iconCodexDark from '@/assets/icons/codex_drak.svg';
@@ -186,12 +187,11 @@ export function OAuthPage() {
 
   const copyLink = async (url?: string) => {
     if (!url) return;
-    try {
-      await navigator.clipboard.writeText(url);
-      showNotification(t('notification.link_copied'), 'success');
-    } catch {
-      showNotification(t('notification.copy_failed'), 'error');
-    }
+    const copied = await copyToClipboard(url);
+    showNotification(
+      t(copied ? 'notification.link_copied' : 'notification.copy_failed'),
+      copied ? 'success' : 'error'
+    );
   };
 
   const submitCallback = async (provider: OAuthProvider) => {

src/utils/clipboard.ts

@@ -1,4 +1,4 @@
-export const copyToClipboard = async (text: string): Promise<boolean> => {
+export async function copyToClipboard(text: string): Promise<boolean> {
   try {
     if (typeof navigator !== 'undefined' && navigator.clipboard?.writeText) {
       await navigator.clipboard.writeText(text);
@@ -9,20 +9,41 @@ export const copyToClipboard = async (text: string): Promise<boolean> => {
   }
 
   try {
+    if (typeof document === 'undefined') return false;
+    if (!document.body) return false;
+
+    const activeElement = document.activeElement as HTMLElement | null;
+
     const textarea = document.createElement('textarea');
     textarea.value = text;
+    textarea.setAttribute('readonly', '');
     textarea.style.position = 'fixed';
     textarea.style.opacity = '0';
+    textarea.style.pointerEvents = 'none';
     textarea.style.left = '-9999px';
     textarea.style.top = '0';
+    textarea.style.width = '1px';
+    textarea.style.height = '1px';
+    textarea.style.padding = '0';
+    textarea.style.border = '0';
+
     document.body.appendChild(textarea);
     textarea.focus();
     textarea.select();
+    textarea.setSelectionRange(0, textarea.value.length);
     const copied = document.execCommand('copy');
     document.body.removeChild(textarea);
+
+    if (activeElement?.focus) {
+      try {
+        activeElement.focus();
+      } catch {
+        // ignore
+      }
+    }
+
     return copied;
   } catch {
     return false;
   }
-};
-
+}