fix: 支持模型异常后继续文档对话

- 将本轮文档上下文纳入可持久化的 Agent 用户消息

=- 在异常提示中提供请重试动作并自动发送继续

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

@@ -3,6 +3,7 @@ import type {
   ChatArtifactLoader,
   ChatDocumentLoader,
   ChatImageLoader,
+  ChatTimelineErrorItem,
   ChatTimelineItem,
   ChatTimelineMessageItem,
   ChatTimelineMessagePart,
@@ -31,6 +32,8 @@ const props = defineProps<{
   copyable?: boolean;
   copyAction?: (item: ChatTimelineMessageItem) => boolean | Promise<boolean>;
   documentLoader?: ChatDocumentLoader;
+  errorActionDisabled?: boolean;
+  errorActionLabel?: string;
   imageLoader?: ChatImageLoader;
   item: ChatTimelineItem;
   regenerable?: boolean;
@@ -41,6 +44,7 @@ const props = defineProps<{
 const emit = defineEmits<{
   approve: [payload: ChatTimelineToolApprovalPayload];
   copyMessage: [item: ChatTimelineMessageItem];
+  errorAction: [item: ChatTimelineErrorItem];
   regenerateMessage: [item: ChatTimelineMessageItem];
   reject: [payload: ChatTimelineToolApprovalPayload];
   selectNextVariant: [item: ChatTimelineMessageItem];
@@ -280,7 +284,10 @@ function handleCopyAction() {
     </div>
     <ChatErrorNotice
       v-else-if="item.type === 'error'"
+      :action-disabled="errorActionDisabled"
+      :action-label="errorActionLabel"
       :message="item.message"
+      @action="emit('errorAction', item)"
     />
   </div>
 </template>