fix: stop terminal traces showing thinking placeholder (#1441)

web/hwlab-cloud-web/scripts/workbench-e2e-server.ts

@@ -156,11 +156,17 @@ function createScenarioState(scenarioId: string): ScenarioState {
     conversations.push(crossProjectConversation());
     traces.trc_cross_project = crossProjectTrace();
   }
+  if (id === "terminal-empty-trace") {
+    conversations.push(terminalEmptyTraceConversation());
+    traces.trc_terminal_empty = terminalEmptyTrace();
+  }
   if (id === "session-switch-empty-reload") conversations.push(emptyConversation());
   const selectedConversationId = id === "deep-link" || id === "stale-nested-trace"
     ? "cnv_failed"
     : id === "terminal-turn-stale-session-active"
       ? "cnv_completed"
+      : id === "terminal-empty-trace"
+        ? "cnv_terminal_empty"
     : id === "deep-link-stale-workspace-authority" || id === "stale-submit-restore"
       ? "cnv_running"
       : base.selectedConversationId;
@@ -285,6 +291,31 @@ function crossProjectTrace(): JsonRecord {
   return { traceId: "trc_cross_project", projectId: "prj_v02_code_agent", conversationId: "cnv_cross_project", sessionId: "ses_cross_project", threadId: "thr_cross_project", status: "completed", events: [], eventCount: 0, fullTraceLoaded: true, hasMore: false };
 }
 
+function terminalEmptyTraceConversation(): ConversationRecord {
+  const now = new Date().toISOString();
+  return {
+    conversationId: "cnv_terminal_empty",
+    projectId: capture.scenario.projectId,
+    sessionId: "ses_terminal_empty",
+    threadId: "thr_terminal_empty",
+    status: "completed",
+    lastTraceId: "trc_terminal_empty",
+    startedAt: now,
+    updatedAt: now,
+    messageCount: 2,
+    firstUserMessagePreview: "完成态空 Trace 文案验证",
+    session: { sessionId: "ses_terminal_empty", threadId: "thr_terminal_empty", status: "completed" },
+    messages: [
+      { id: "msg_terminal_empty_user", role: "user", title: "用户", text: "完成态空 Trace 文案验证", status: "sent", createdAt: now, conversationId: "cnv_terminal_empty", sessionId: "ses_terminal_empty", threadId: "thr_terminal_empty", turnId: "turn_terminal_empty" },
+      { id: "msg_terminal_empty_agent", role: "agent", title: "Code Agent", text: "终态空 Trace 已完成。", status: "completed", createdAt: now, conversationId: "cnv_terminal_empty", sessionId: "ses_terminal_empty", threadId: "thr_terminal_empty", traceId: "trc_terminal_empty", turnId: "turn_terminal_empty", runnerTrace: terminalEmptyTrace() }
+    ]
+  };
+}
+
+function terminalEmptyTrace(): JsonRecord {
+  return { traceId: "trc_terminal_empty", status: "completed", conversationId: "cnv_terminal_empty", sessionId: "ses_terminal_empty", threadId: "thr_terminal_empty", events: [], eventCount: 0, fullTraceLoaded: true, hasMore: false, finalResponse: { text: "终态空 Trace 已完成。" } };
+}
+
 function emptyConversation(): ConversationRecord {
   const now = new Date().toISOString();
   return { conversationId: "cnv_empty", projectId: state?.projectId ?? capture.scenario.projectId, sessionId: "ses_empty", threadId: "thr_empty", status: "active", startedAt: now, updatedAt: now, messageCount: 0, firstUserMessagePreview: "空白会话", session: { sessionId: "ses_empty", threadId: "thr_empty", status: "active" }, messages: [] };

web/hwlab-cloud-web/src/components/agent/TraceTimeline.vue

@@ -15,6 +15,7 @@ const events = computed(() => Array.isArray(props.trace?.events) ? props.trace.e
 const eventCount = computed(() => props.trace?.eventCount ?? events.value.length);
 const readableRows = computed(() => traceDisplayRows(traceRecord(props.trace), events.value as Record<string, unknown>[]));
 const emptyTraceLabel = computed(() => {
+  if (isTerminalTraceStatus(props.trace?.status)) return terminalTraceEmptyLabel(props.trace?.status);
   if (events.value.length > 0 || (props.trace?.fullTraceLoaded === true && eventCount.value > 0)) return "暂无可读 Trace";
   return props.trace?.fullTraceLoaded === true ? "思考中..." : "加载中...";
 });
@@ -92,6 +93,22 @@ function traceRecord(trace: RunnerTrace | null | undefined): Record<string, unkn
   return trace && typeof trace === "object" ? trace as Record<string, unknown> : {};
 }
 
+function isTerminalTraceStatus(status: unknown): boolean {
+  return ["completed", "failed", "blocked", "timeout", "canceled", "cancelled"].includes(String(status ?? "").toLowerCase());
+}
+
+function terminalTraceEmptyLabel(status: unknown): string {
+  switch (String(status ?? "").toLowerCase()) {
+    case "completed": return "运行已完成，暂无可读 Trace";
+    case "failed":
+    case "blocked": return "运行失败，暂无可读 Trace";
+    case "timeout": return "运行超时，暂无可读 Trace";
+    case "canceled":
+    case "cancelled": return "运行已取消，暂无可读 Trace";
+    default: return "运行已结束，暂无可读 Trace";
+  }
+}
+
 </script>
 
 <template>

web/hwlab-cloud-web/tests/workbench-e2e/specs/trace-rendering.spec.ts

@@ -25,3 +25,15 @@ test("failed trace exposes readable failure row", async ({ page }, testInfo) =>
   await expect(page.locator(`${selectors.messageCard}[data-status="failed"]`)).toContainText("缺少受控依赖");
   await saveScreenshot(page, testInfo, "trace-rendering-failed");
 });
+
+test.describe("terminal empty trace copy", () => {
+  test.use({ scenarioId: "terminal-empty-trace" });
+
+  test("completed message details do not retain thinking placeholder", async ({ page }) => {
+    await gotoWorkbench(page, "/workbench/sessions/cnv_terminal_empty");
+    const card = page.locator(`${selectors.messageCard}[data-status="completed"]`).last();
+    await expect(card).toContainText("终态空 Trace 已完成。");
+    await expect(card.locator(".trace-empty")).toContainText("运行已完成，暂无可读 Trace");
+    expect((await card.textContent()) ?? "").not.toContain("思考中");
+  });
+});