fix: 归并异步工具状态卡片

- 统一异步阶段事件的稳定任务标识

- 保留原始工具调用 ID 供事件关联

- 将提交、轮询和结果状态更新到同一审批卡片

easyflow-ui-admin/app/src/views/ai/agent-chat/adapters/agentTimelineAdapter.test.ts

@@ -336,6 +336,74 @@ describe('agentTimelineAdapter', () => {
     expect(error?.message).toBe('失败');
   });
 
+  it('keeps async workflow polling events in the original approval card', () => {
+    const items: any[] = [];
+
+    applyAgentSseEnvelope(items, {
+      domain: 'TOOL',
+      type: 'FORM_REQUEST',
+      payload: {
+        input: { user_input: '写一篇小作文' },
+        requestId: 'req-async',
+        resumeToken: 'token-async',
+        toolCallId: 'submit-call-1',
+        toolName: '文档生成',
+      },
+    });
+    applyAgentSseEnvelope(items, {
+      domain: 'TOOL',
+      type: 'TOOL_RESULT',
+      payload: {
+        asyncTool: true,
+        phase: 'submit',
+        sourceToolCallId: 'submit-call-1',
+        status: 'RUNNING',
+        taskId: 'task-1',
+        toolCallId: 'task-1',
+        toolName: '文档生成',
+      },
+    });
+    for (const sourceToolCallId of ['observe-call-1', 'observe-call-2']) {
+      applyAgentSseEnvelope(items, {
+        domain: 'TOOL',
+        type: 'TOOL_CALL',
+        payload: {
+          asyncTool: true,
+          input: { taskId: 'task-1' },
+          phase: 'observe',
+          sourceToolCallId,
+          status: 'RUNNING',
+          taskId: 'task-1',
+          toolCallId: 'task-1',
+          toolName: '文档生成',
+        },
+      });
+    }
+    applyAgentSseEnvelope(items, {
+      domain: 'TOOL',
+      type: 'TOOL_RESULT',
+      payload: {
+        asyncTool: true,
+        phase: 'result',
+        sourceToolCallId: 'result-call-1',
+        status: 'SUCCEEDED',
+        taskId: 'task-1',
+        toolCallId: 'task-1',
+        toolName: '文档生成',
+      },
+    });
+
+    const tools = items.filter((item) => item.type === 'tool');
+    expect(tools).toHaveLength(1);
+    expect(tools[0]).toMatchObject({
+      mode: 'approval',
+      status: 'success',
+      taskId: 'task-1',
+      toolCallId: 'task-1',
+      toolName: '文档生成',
+    });
+  });
+
   it('keeps assistant text and approval card when a tool request is rejected', () => {
     const items: any[] = [];