diff --git a/web/hwlab-cloud-web/src/components/agent/TraceTimeline.vue b/web/hwlab-cloud-web/src/components/agent/TraceTimeline.vue
index 17af8559..ea2dbfd4 100644
--- a/web/hwlab-cloud-web/src/components/agent/TraceTimeline.vue
+++ b/web/hwlab-cloud-web/src/components/agent/TraceTimeline.vue
@@ -91,7 +91,7 @@ function filterReadableRows(rows: TraceEventRow[], hideSealedFinalResponse: bool
 function traceRowDuplicatesSealedFinal(row: TraceEventRow): boolean {
   if (rowIsTool(row)) return false;
   if (row.rowId.startsWith("trace-final-response:")) return true;
-  return row.terminal === true && /(?:助手最终消息|assistant\s+(?:final\s+)?message)/iu.test(String(row.header ?? ""));
+  return /(?:助手(?:最终)?消息|assistant\s+(?:final\s+)?message)/iu.test(String(row.header ?? ""));
 }
 
 function toolCommandPreview(row: TraceEventRow): string | null {
diff --git a/web/hwlab-cloud-web/src/components/workbench/ConversationPanel.vue b/web/hwlab-cloud-web/src/components/workbench/ConversationPanel.vue
index 1a955430..9c77f1f8 100644
--- a/web/hwlab-cloud-web/src/components/workbench/ConversationPanel.vue
+++ b/web/hwlab-cloud-web/src/components/workbench/ConversationPanel.vue
@@ -319,12 +319,17 @@ function messageTimingForDisplay(message: ChatMessage): ChatMessage["timing"] {
 
 function terminalMessageDurationMs(message: ChatMessage, timing: ChatMessage["timing"]): number | null {
   const elapsed = elapsedTerminalDurationMs(message, timing);
-  if (elapsed !== null && elapsed > 0) return elapsed;
+  if (elapsed !== null && elapsed > 0) return ceilDisplayDurationSecond(elapsed);
   const recorded = sealedTerminalRecordedDurationMs(message, timing);
-  if (recorded !== null) return recorded;
+  if (recorded !== null) return ceilDisplayDurationSecond(recorded);
   return null;
 }
 
+function ceilDisplayDurationSecond(ms: number): number {
+  if (!Number.isFinite(ms) || ms <= 0) return ms;
+  return Math.ceil(ms / 1000) * 1000;
+}
+
 function sealedTerminalRecordedDurationMs(message: ChatMessage, timing: ChatMessage["timing"]): number | null {
   const messageRecord = message as Record<string, unknown>;
   const trace = message.runnerTrace as Record<string, unknown> | null | undefined;