fix: 兼容低版本浏览器消息复制

- 为 Chrome 90 增加剪贴板兼容回退

- 统一聊天与智能体试运行的原色对勾反馈

easyflow-ui-admin/app/src/views/ai/agents/components/AgentTryoutPanel.vue

@@ -14,6 +14,7 @@ import { computed, onMounted, ref, watch } from 'vue';
 
 import { ChatTimeline } from '@easyflow/common-ui';
 import { BrushCleaning } from '@easyflow/icons';
+import { copyTextToClipboard } from '@easyflow/utils';
 
 import { ElButton, ElMessage } from 'element-plus';
 
@@ -148,13 +149,15 @@ function canRegenerateMessage(item: ChatTimelineMessageItem) {
 async function handleCopyMessage(item: ChatTimelineMessageItem) {
   const text = copyMessageText(item).trim();
   if (!text) {
-    return;
+    return false;
   }
   try {
-    await navigator.clipboard.writeText(text);
-    ElMessage.success('已复制');
-  } catch {
+    await copyTextToClipboard(text);
+    return true;
+  } catch (error) {
+    console.error('复制消息失败:', error);
     ElMessage.error('复制失败');
+    return false;
   }
 }
 
@@ -310,11 +313,11 @@ async function handleReject(payload: ChatTimelineToolApprovalPayload) {
         :image-loader="loadAgentChatImage"
         empty-text="输入问题试运行当前智能体"
         :approval-loading="approvalLoading"
+        :copy-action="handleCopyMessage"
         :copyable="canCopyMessage"
         :regenerable="canRegenerateMessage"
         :regenerate-disabled="true"
         @approve="handleApprove"
-        @copy-message="handleCopyMessage"
         @regenerate-message="handleRegenerateMessage"
         @reject="handleReject"
         @select-next-variant="handleSelectNextVariant"