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/packages/effects/common-ui/src/components/chat-timeline/ChatTimelineItem.vue

@@ -21,6 +21,7 @@ import ChatToolCard from './ChatToolCard.vue';
 const props = defineProps<{
   approvalLoading?: boolean;
   copyable?: boolean;
+  copyAction?: (item: ChatTimelineMessageItem) => boolean | Promise<boolean>;
   regenerable?: boolean;
   regenerateDisabled?: boolean;
   assistantActionsVisible?: boolean;
@@ -118,6 +119,14 @@ function updateThinkingExpanded(partId: string, expanded: boolean) {
     part.expanded = expanded;
   }
 }
+
+function handleCopyAction() {
+  const item = messageItem.value;
+  if (!item || !props.copyAction) {
+    return false;
+  }
+  return props.copyAction(item);
+}
 </script>
 
 <template>
@@ -161,6 +170,7 @@ function updateThinkingExpanded(partId: string, expanded: boolean) {
         :align="messageItem.role === 'user' ? 'end' : 'start'"
         :allow-copy="copyable"
         :allow-regenerate="regenerable"
+        :copy-action="copyAction ? handleCopyAction : undefined"
         :disabled-variant-next="disabledVariantNext"
         :disabled-variant-previous="disabledVariantPrevious"
         :regenerate-disabled="regenerateDisabled"