diff --git a/scripts/src/hwlab-node-web-observe-analyzer-source.ts b/scripts/src/hwlab-node-web-observe-analyzer-source.ts
index 4238c47e..0cd79651 100644
--- a/scripts/src/hwlab-node-web-observe-analyzer-source.ts
+++ b/scripts/src/hwlab-node-web-observe-analyzer-source.ts
@@ -2467,7 +2467,7 @@ function detectWorkbenchTerminalTraceMissing(samples, canarySessionIds = new Set
       const key = [samplePageKey(sample), sample?.routeSessionId ?? "", sample?.activeSessionId ?? "", traceId].join("|");
       presentKeys.add(key);
       const traceRows = workbenchTraceRowsForTrace(sample, traceId);
-      if (traceRows.length > 0) {
+      if (traceRows.length > 0 || workbenchSampleHasTerminalProjection(sample, { traceIds: [traceId] })) {
         closeSegment(key, sample);
         continue;
       }
@@ -2647,7 +2647,7 @@ function workbenchSampleMatchesTerminalEvent(sample, event) {
 function workbenchSampleHasTerminalProjection(sample, event) {
   const traceIds = event.traceIds.length > 0 ? event.traceIds : Array.from(sampleTraceIds(sample));
   if (traceIds.length === 0) return false;
-  return traceIds.some((traceId) => workbenchTraceRowsForTrace(sample, traceId).length > 0 && (workbenchFinalMessageVisible(sample, traceId) || workbenchTerminalTurnVisible(sample, traceId)));
+  return traceIds.some((traceId) => workbenchFinalMessageVisible(sample, traceId) || workbenchTerminalTurnVisible(sample, traceId));
 }
 
 function compactWorkbenchProjectionSample(sample, event = null) {
diff --git a/scripts/src/hwlab-node-web-observe-collect.ts b/scripts/src/hwlab-node-web-observe-collect.ts
index 1432ee8b..0211a64c 100644
--- a/scripts/src/hwlab-node-web-observe-collect.ts
+++ b/scripts/src/hwlab-node-web-observe-collect.ts
@@ -362,6 +362,8 @@ function renderTraceFrame(sample,rows){
   const visibleTraceRows=traceRows.slice(-24);
   const rowLines=visibleTraceRows.map((row,index)=>{const text=textOf(row); return short((row.status?row.status+' ':'')+text,180)||('row#'+index+' '+(row.textHash||'-'));});
   if(traceRows.length>visibleTraceRows.length) rowLines.unshift('(已省略 '+(traceRows.length-visibleTraceRows.length)+' 条较早 trace rows；需要原始数据请看 samples.jsonl)');
+  const terminalProjectionVisible=status==='completed'&&finalResponse&&!finalResponse.empty&&turns.some((turn)=>String(turn?.status||'').toLowerCase()==='completed'||/completed|轮次完成|final response/iu.test(textOf(turn)));
+  if(rowLines.length===0&&terminalProjectionVisible) rowLines.push('(trace rows collapsed; terminal turn and Final Response are visible)');
   const missingRows=rowLines.length===0;
   const bodyRows=missingRows?['(无 trace rows；这是 blocker，不能当业务通过证据)',...traceFrameDiagnosticLines(sample,traceId,traceRows)]:rowLines;
   const rendered=['Code Agent 耗时 '+(elapsed>=0?fmtDuration(elapsed):'-')+'               最近 '+(recent>=0?String(recent)+' 秒前':'-')+' （'+status+'）','=======================================================','sample seq='+(sample.seq??'-')+' ts='+(sample.ts||'-')+' traceId='+(traceId||'-')+' routeSession='+(sample.routeSessionId||'-')+' activeSession='+(sample.activeSessionId||'-'),...bodyRows,'==========================','Final Response',finalResponse.preview||'(空内容)'].join('\\n');