feat: 收口工作流对话最终结果展示

- 主时间线只展示顶级工作流最终输出和有限运行进度

- 补齐结构化结果、人工审核交互与实时详情回归

- 优化数组层级和复制操作

easyflow-api/easyflow-api-admin/src/test/java/tech/easyflow/admin/service/ai/WorkflowChatEventStreamTest.java

@@ -0,0 +1,72 @@
+package tech.easyflow.admin.service.ai;
+
+import com.easyagents.flow.core.chain.ChainConsts;
+import com.easyagents.flow.core.chain.runtime.ChainExecutor;
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.verify;
+
+/**
+ * {@link WorkflowChatEventStream} 最终输出协议测试。
+ */
+public class WorkflowChatEventStreamTest {
+
+    /**
+     * 验证会话事件流不再订阅节点显式输出。
+     */
+    @Test
+    public void shouldOnlyRegisterLifecycleAndErrorListeners() {
+        ChainExecutor chainExecutor = mock(ChainExecutor.class);
+        WorkflowChatEventStream eventStream =
+                new WorkflowChatEventStream(chainExecutor);
+
+        eventStream.registerListeners();
+
+        verify(chainExecutor).addEventListener(any());
+        verify(chainExecutor).addErrorListener(any());
+        verify(chainExecutor, never()).addOutputListener(any());
+    }
+
+    /**
+     * 验证顶级工作流最终输出会保留业务结构并移除内部控制字段。
+     */
+    @Test
+    public void shouldKeepStructuredFinalOutputAndRemoveInternalFields() {
+        Map<String, Object> result = new LinkedHashMap<>();
+        result.put("summary", "执行完成");
+        result.put("items", List.of(
+                Map.of("name", "A", "score", 90),
+                Map.of("name", "B", "score", 85)
+        ));
+        result.put(ChainConsts.CHAIN_STATE_STATUS_KEY, "SUCCEEDED");
+        result.put(ChainConsts.CHAIN_STATE_MESSAGE_KEY, "internal");
+        result.put(ChainConsts.NODE_STATE_STATUS_KEY, "SUCCESS");
+        result.put(ChainConsts.SCHEDULE_NEXT_NODE_DISABLED_KEY, true);
+
+        Map<String, Object> visible =
+                WorkflowChatEventStream.visibleFinalOutput(result);
+
+        Assert.assertEquals(visible.get("summary"), "执行完成");
+        Assert.assertEquals(visible.get("items"), result.get("items"));
+        Assert.assertEquals(visible.size(), 2);
+        Assert.assertEquals(result.size(), 6);
+    }
+
+    /**
+     * 验证空执行结果被规范化为空对象。
+     */
+    @Test
+    public void shouldNormalizeMissingFinalOutputToEmptyMap() {
+        Assert.assertTrue(
+                WorkflowChatEventStream.visibleFinalOutput(null).isEmpty()
+        );
+    }
+}