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/app/src/views/ai/agent-chat/agentChatRuntimeManager.test.ts

@@ -181,6 +181,57 @@ describe('agentChatRuntimeManager', () => {
     expect(agentChatRuntimeManager.getSnapshot('101')).toBeUndefined();
   });
 
+  it('输入已确认后将模型错误转换为可重试的用户提示', async () => {
+    let resolveRun: (() => void) | undefined;
+    let runOptions: EasyFlowAguiRunOptions | undefined;
+    aguiMocks.run.mockImplementation((options: EasyFlowAguiRunOptions) => {
+      runOptions = options;
+      return new Promise<void>((resolve) => {
+        resolveRun = resolve;
+      });
+    });
+    useUserStore().setUserInfo({
+      avatar: '',
+      id: 'retry-user',
+      loginName: 'retry-user',
+      nickname: '重试用户',
+      tenantId: 'tenant-1',
+    });
+
+    await agentChatRuntimeManager.start({
+      agentId: 'agent-1',
+      prompt: '介绍文档',
+      sessionId: 'retry-session',
+    });
+    runOptions?.onEvent({
+      name: easyFlowAguiCustomEvent.inputAccepted,
+      type: EventType.CUSTOM,
+      value: {},
+    });
+    runOptions?.onEvent({
+      code: 'MODEL_ERROR',
+      message: 'Retries exhausted: 2/2',
+      runId: 'run-test',
+      threadId: 'retry-session',
+      type: EventType.RUN_ERROR,
+    });
+    resolveRun?.();
+    await Promise.resolve();
+    await Promise.resolve();
+
+    const snapshot = agentChatRuntimeManager.getSnapshot('retry-session');
+    expect(snapshot).toEqual(
+      expect.objectContaining({
+        error: '模型连接异常',
+        retryContextReady: true,
+        terminalOutcome: 'failed',
+      }),
+    );
+    expect(snapshot?.items.find((item) => item.type === 'error')).toEqual(
+      expect.objectContaining({ message: '模型连接异常' }),
+    );
+  });
+
   it('刷新恢复已确认输入时重新触发草稿清理回调', async () => {
     const account = {
       avatar: '',