console: 对话只保留一处实时单列（ChatGPT 式）

根因：ConversationSection 同时渲染 TracePanel（prompt +
全部链路条目）和 ContinuePanel（GET /chat-history，
服务端已把 prompt + 继续 + 后续 + 全部链路种类按时间
合并、并去掉了后续消息回声），简单任务的两份名单
显示同一组用户 + 助手卡片，看起来就是对话重复。
改法：删 TracePanel 名单，只留 ContinuePanel 这一列；
TracePanel 唯一不重复的控件（链路类型筛选、下载完整
链路）移到这一列顶部，筛选只过滤链路消息、用户消息
恒保留；实时性不丢：基础是 10 秒轮询的 chat-history，
SSE 新链路条目按 id 去重合并进来，轮询拿到后不再
重复；无 chat-history 的旧服务端回退路径也改成渲染
全部链路种类（不再只渲染 message），并跳过 fu- 回声。

cloud/console-react/src/components/chat/mapTrace.ts

@@ -2,7 +2,7 @@ import type { TraceEntry } from "../../api/types";
 import { traceLineText } from "../../api/client";
 
 export type ChatRole = "user" | "assistant" | "tool" | "status";
-export interface ChatMessage { id: string; role: ChatRole; text: string; label?: string }
+export interface ChatMessage { id: string; role: ChatRole; text: string; label?: string; kind?: string }
 
 // Mapping is by live trace kind ONLY. Trace entries carry no timestamp
 // and no sender role in the live file, so no role is invented from
@@ -18,15 +18,15 @@ export function traceEntryToChatMessage(e: TraceEntry, i: number): ChatMessage {
     // 成模型没写完（2026-10-29 实弹：468 字 final_answer 断在 fu）。
     // 完整回复在任务的 result_text（右侧详情），不在链路条目里。
     const text = (e.phase ? "[" + e.phase + "] " : "") + (e.text || "");
-    return { id, role: "assistant", text: e.truncated ? text + "\n（链路摘要已截断至 300 字，完整回复见右侧任务结果）" : text, label: "助手" };
+    return { id, role: "assistant", kind: e.kind, text: e.truncated ? text + "\n（链路摘要已截断至 300 字，完整回复见右侧任务结果）" : text, label: "助手" };
   }
   if (e.kind === "exec" || e.kind === "file" || e.kind === "tool" || e.kind === "call") {
     const label = e.kind === "exec" ? "命令" : e.kind === "file" ? "文件" : e.kind === "tool" ? "工具" : "调用";
-    return { id, role: "tool", text: traceLineText(e), label };
+    return { id, role: "tool", kind: e.kind, text: traceLineText(e), label };
   }
-  if (e.kind === "plan") return { id, role: "status", text: e.text || "" };
-  if (e.kind === "reasoning") return { id, role: "status", text: "思考：" + (e.summary || "") };
-  if (e.kind === "agent-start") return { id, role: "status", text: "子代理开始：" + (e.name || "") + (e.prompt ? "（" + e.prompt + "）" : "") };
-  if (e.kind === "agent-done") return { id, role: "status", text: "子代理结束：" + (e.name || "") + " " + (e.status || "") };
-  return { id, role: "status", text: traceLineText(e) };
+  if (e.kind === "plan") return { id, role: "status", kind: e.kind, text: e.text || "" };
+  if (e.kind === "reasoning") return { id, role: "status", kind: e.kind, text: "思考：" + (e.summary || "") };
+  if (e.kind === "agent-start") return { id, role: "status", kind: e.kind, text: "子代理开始：" + (e.name || "") + (e.prompt ? "（" + e.prompt + "）" : "") };
+  if (e.kind === "agent-done") return { id, role: "status", kind: e.kind, text: "子代理结束：" + (e.name || "") + " " + (e.status || "") };
+  return { id, role: "status", kind: e.kind, text: traceLineText(e) };
 }