feat(ai): 业务上下文感知与 A2UI 链路统一

- 新增代码内业务上下文元数据层（实体字典 + 三大闭环工作流）
- 新增 get_business_context / get_entity_schema / get_pending_tasks 运行时工具
- SYSTEM_PROMPT 与技能目录改为先查业务流程/待办再执行
- A2UI 增加 ai_a2ui_submissions 幂等表、表单过期、ui.artifact 事件
- 提交回灌携带 submissionId / fieldErrors / 下一步建议
- 前端 uiArtifacts 归一化与过期表单禁用

apps/admin/src/components/AiChat/message-mappers.ts

@@ -3,11 +3,13 @@ import type {
   AiChatMessage,
   AiChatMessageStatus,
   AiChartSchema,
+  AiArtifactSchema,
   AiFormSchema,
   AiMessageRecord,
   AiReviewSchema,
   AiToolRun,
 } from './types';
+import { mergeArtifactIntoMessage } from './provider';
 
 function mapStatus(record: AiMessageRecord): AiChatMessageStatus {
   if (record.status === 'pending') return 'loading';
@@ -50,24 +52,40 @@ function historyCharts(record: AiMessageRecord): AiChartSchema[] | undefined {
   return [a2uiChart as AiChartSchema];
 }
 
+function historyArtifacts(record: AiMessageRecord) {
+  const artifacts = record.metadata?.uiArtifacts;
+  if (!Array.isArray(artifacts)) return undefined;
+  return artifacts.filter(
+    (item): item is AiArtifactSchema =>
+      Boolean(item) && typeof item === 'object' && typeof (item as AiArtifactSchema).id === 'string',
+  );
+}
+
 export function mapHistoryMessage(record: AiMessageRecord): MessageInfo<AiChatMessage> {
+  const artifacts = historyArtifacts(record);
+  const baseMessage = {
+    id: record.id,
+    role: record.role,
+    content: record.content || '',
+    reasoningContent: record.reasoningContent || '',
+    toolRuns: (record.toolRuns || []).map(normalizeToolRun),
+    attachments: record.attachments ?? [],
+    forms: historyForms(record),
+    reviews: historyReviews(record),
+    charts: historyCharts(record),
+    replyToMessageId: record.replyToMessageId,
+    metadata: record.metadata,
+    error: record.status === 'failed' ? record.errorCode || 'AI 回答生成失败' : undefined,
+    cancelled: record.status === 'cancelled',
+  };
+  if (artifacts) {
+    for (const artifact of artifacts) {
+      mergeArtifactIntoMessage(baseMessage as AiChatMessage, artifact);
+    }
+  }
   return {
     id: record.id,
     status: mapStatus(record),
-    message: {
-      id: record.id,
-      role: record.role,
-      content: record.content || '',
-      reasoningContent: record.reasoningContent || '',
-      toolRuns: (record.toolRuns || []).map(normalizeToolRun),
-      attachments: record.attachments ?? [],
-      forms: historyForms(record),
-      reviews: historyReviews(record),
-      charts: historyCharts(record),
-      replyToMessageId: record.replyToMessageId,
-      metadata: record.metadata,
-      error: record.status === 'failed' ? record.errorCode || 'AI 回答生成失败' : undefined,
-      cancelled: record.status === 'cancelled',
-    },
+    message: baseMessage as AiChatMessage,
   };
 }