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/agent-chat/index.vue

@@ -21,6 +21,7 @@ import {
   ChatTimeline,
   ChatTimelineBuilder,
 } from '@easyflow/common-ui';
+import { copyTextToClipboard } from '@easyflow/utils';
 
 import {
   Delete,
@@ -872,13 +873,15 @@ function handleStop() {
 async function handleCopyMessage(item: ChatTimelineMessageItem) {
   const text = copyMessageText(item);
   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;
   }
 }
 
@@ -1133,9 +1136,9 @@ onBeforeUnmount(() => {
           :image-loader="loadAgentChatImage"
           empty-text="选择智能体后开始对话"
           :approval-loading="Boolean(approvalLoadingKey)"
+          :copy-action="handleCopyMessage"
           :copyable="canCopyMessage"
           @approve="handleApprove"
-          @copy-message="handleCopyMessage"
           @reject="handleReject"
           @select-next-variant="() => undefined"
           @select-previous-variant="() => undefined"

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"

easyflow-ui-admin/app/src/views/ai/chat/index.vue

@@ -951,19 +951,6 @@ function scrollToBottom(force = false) {
   });
 }
 
-async function copyMessageContent(content?: string) {
-  const normalized = String(content || '').trim();
-  if (!normalized) {
-    return;
-  }
-  try {
-    await navigator.clipboard.writeText(normalized);
-    ElMessage.success('已复制');
-  } catch {
-    ElMessage.error('复制失败');
-  }
-}
-
 function resolveKnowledgeView(knowledgeId: string) {
   const view = knowledgeMap.value.get(knowledgeId);
   if (view) {
@@ -1369,13 +1356,6 @@ function canRegenerateMessage(item: ChatTimeTimelineItem) {
   return !!roundId && !!resolveRoundUserPrompt(roundId);
 }
 
-async function handleCopyMessage(item: ChatTimeTimelineItem) {
-  if (!canCopyMessage(item)) {
-    return;
-  }
-  await copyMessageContent(item.content);
-}
-
 async function handleRegenerateMessage() {
   if (sending.value || isReadOnly.value) {
     return;
@@ -1786,6 +1766,7 @@ async function deleteSession(targetSession?: SessionItem) {
                       :align="item.role === 'user' ? 'end' : 'start'"
                       :allow-copy="canCopyMessage(item)"
                       :allow-regenerate="canRegenerateMessage(item)"
+                      :copy-text="String(item.content || '').trim()"
                       :disabled-variant-next="!canSwitchVariant(item, 'next')"
                       :disabled-variant-previous="!canSwitchVariant(item, 'previous')"
                       :regenerate-disabled="sending || isReadOnly"
@@ -1795,7 +1776,6 @@ async function deleteSession(targetSession?: SessionItem) {
                         Number(item.variantIndex || item.selectedVariantIndex || 1)
                       "
                       :variant-total="Number(item.variantCount || 1)"
-                      @copy="handleCopyMessage(item)"
                       @regenerate="handleRegenerateMessage"
                       @select-next-variant="selectVariantForMessage(item, 'next')"
                       @select-previous-variant="