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/server/src/ai-chat/ai-chat.submit-content.ts

@@ -3,21 +3,35 @@ import type { AiChatServiceContext } from './ai-chat.types';
 
 export function a2uiSubmitInfo(
   metadata: Record<string, unknown> | null,
-): { title: string; values: Record<string, unknown> } | null {
+): {
+  formId: string;
+  title: string;
+  values: Record<string, unknown>;
+  submissionId?: string;
+  fieldErrors?: Array<{ field: string; message: string }>;
+} | null {
   const submit = metadata?.a2uiSubmit;
   if (!submit || typeof submit !== 'object' || Array.isArray(submit)) return null;
   const record = submit as Record<string, unknown>;
+  const formId = typeof record.formId === 'string' ? record.formId : '';
   const title = typeof record.formTitle === 'string' ? record.formTitle : '表单';
   const values =
     record.values && typeof record.values === 'object' && !Array.isArray(record.values)
       ? (record.values as Record<string, unknown>)
       : {};
-  return { title, values };
+  const submissionId =
+    typeof record.submissionId === 'string' ? record.submissionId : undefined;
+  const fieldErrors = Array.isArray(record.fieldErrors)
+    ? (record.fieldErrors as Array<{ field: string; message: string }>)
+    : [];
+  return { formId, title, values, submissionId, fieldErrors };
 }
 
 export function buildFormSubmitModelContent(submit: {
   title: string;
   values: Record<string, unknown>;
+  submissionId?: string;
+  fieldErrors?: Array<{ field: string; message: string }>;
 }): string {
   let json: string;
   try {
@@ -25,7 +39,11 @@ export function buildFormSubmitModelContent(submit: {
   } catch {
     json = '[无法序列化]';
   }
-  return `【表单提交：${submit.title}】\n提交值（JSON）：${json.slice(0, 32 * 1024)}\n用户已在表单中确认，你可以执行允许的写操作工具。`;
+  const submissionId = submit.submissionId ? `\n提交ID：${submit.submissionId}` : '';
+  const fieldErrors = submit.fieldErrors?.length
+    ? `\nfieldErrors: ${JSON.stringify(submit.fieldErrors)}`
+    : '\nfieldErrors: []';
+  return `【表单提交：${submit.title}】${submissionId}\n提交值（JSON）：${json.slice(0, 32 * 1024)}${fieldErrors}\n用户已在表单中确认，你可以执行允许的写操作工具。`;
 }
 
 export async function markFormSubmittedOnMessage(
@@ -48,15 +66,28 @@ export async function markFormSubmittedOnMessage(
 
 export function a2uiReviewSubmitInfo(
   metadata: Record<string, unknown> | null,
-): { reviewId: string; reviewTitle: string; resultMessage: string } | null {
+): {
+  reviewId: string;
+  reviewTitle: string;
+  resultMessage: string;
+  submissionId?: string;
+  nextSteps?: Array<{ key: string; label: string }>;
+} | null {
   const submit = metadata?.a2uiReviewSubmit;
   if (!submit || typeof submit !== 'object' || Array.isArray(submit)) return null;
   const record = submit as Record<string, unknown>;
   if (typeof record.reviewId !== 'string') return null;
+  const submissionId =
+    typeof record.submissionId === 'string' ? record.submissionId : undefined;
+  const nextSteps = Array.isArray(record.nextSteps)
+    ? (record.nextSteps as Array<{ key: string; label: string }>)
+    : [];
   return {
     reviewId: record.reviewId,
     reviewTitle: typeof record.reviewTitle === 'string' ? record.reviewTitle : '批量导入',
     resultMessage: typeof record.resultMessage === 'string' ? record.resultMessage : '导入已完成',
+    submissionId,
+    nextSteps,
   };
 }
 
@@ -64,8 +95,14 @@ export function buildReviewSubmitModelContent(submit: {
   reviewId: string;
   reviewTitle: string;
   resultMessage: string;
+  submissionId?: string;
+  nextSteps?: Array<{ key: string; label: string }>;
 }): string {
-  return `【批量导入已确认：${submit.reviewTitle}】\n${submit.resultMessage}\n数据已由系统入库，不要再次调用写入工具，直接向用户汇报导入结果即可。`;
+  const submissionId = submit.submissionId ? `\n提交ID：${submit.submissionId}` : '';
+  const nextSteps = submit.nextSteps?.length
+    ? `\n下一步建议：${submit.nextSteps.map((step) => step.label).join('；')}`
+    : '';
+  return `【批量导入已确认：${submit.reviewTitle}】${submissionId}\n${submit.resultMessage}${nextSteps}\n数据已由系统入库，不要再次调用写入工具，直接向用户汇报导入结果即可。`;
 }
 
 export async function markReviewSubmittedOnMessage(