fix: 修复bot外链复制失败的bug

easyflow-ui-admin/app/src/views/ai/bots/pages/setting/config.vue

@@ -291,13 +291,57 @@ const handleAnonymousAccessChange = (
   handleDialogOptionsStrChange('anonymousEnabled', value);
 };
 
+const copyText = async (value: string) => {
+  // 优先使用现代剪贴板 API；在非安全上下文或权限受限场景自动走降级逻辑。
+  try {
+    if (navigator.clipboard?.writeText) {
+      await navigator.clipboard.writeText(value);
+      return;
+    }
+  } catch {
+    // ignore and fallback
+  }
+
+  const textarea = document.createElement('textarea');
+  textarea.value = value;
+  textarea.setAttribute('readonly', '');
+  textarea.style.position = 'fixed';
+  textarea.style.left = '-9999px';
+  textarea.style.top = '0';
+  textarea.style.opacity = '0';
+  textarea.style.pointerEvents = 'none';
+
+  document.body.appendChild(textarea);
+
+  const selection = document.getSelection();
+  const previousRange =
+    selection && selection.rangeCount > 0 ? selection.getRangeAt(0) : null;
+
+  textarea.focus();
+  textarea.select();
+  textarea.setSelectionRange(0, textarea.value.length);
+  const copied = document.execCommand('copy');
+
+  document.body.removeChild(textarea);
+  if (selection) {
+    selection.removeAllRanges();
+    if (previousRange) {
+      selection.addRange(previousRange);
+    }
+  }
+
+  if (!copied) {
+    throw new Error('copy_failed');
+  }
+};
+
 const handleCopyValue = async (value: string, successMessage?: string) => {
   if (!value) {
     ElMessage.warning($t('bot.chatPublishBaseUrlMissing'));
     return;
   }
   try {
-    await navigator.clipboard.writeText(value);
+    await copyText(value);
     ElMessage.success(successMessage || $t('bot.publicChatCopySuccess'));
   } catch {
     ElMessage.error($t('bot.publicChatCopyFail'));