From 632c557d184421f5bbc5804d71d5b6567ca89438 Mon Sep 17 00:00:00 2001
From: Codex <codex@noreply.local>
Date: Thu, 2 Jul 2026 14:01:57 +0000
Subject: [PATCH] fix: mark missed cpu profile performance windows

---
 scripts/src/hwlab-node-web-observe-collect.ts        | 12 +++++++++---
 .../web-observe-collect-performance.test.ts          |  6 ++++++
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/scripts/src/hwlab-node-web-observe-collect.ts b/scripts/src/hwlab-node-web-observe-collect.ts
index 5045a60e..07c524f2 100644
--- a/scripts/src/hwlab-node-web-observe-collect.ts
+++ b/scripts/src/hwlab-node-web-observe-collect.ts
@@ -798,14 +798,20 @@ function performanceEvidenceMode(perf, commandFiles){
   const commands=performanceCaptureCommandStatus(commandFiles);
   const runner=runnerStatusForPerformance();
   const pendingPerformanceCapture=commands.pendingCount>0||commands.processingCount>0;
+  const coveredWindowCount=Number(s.cpuProfileWindowCoveredCount??0);
+  const overlappedWindowCount=Number(s.cpuProfileWindowOverlappedCount??0);
+  const missedWindowCount=Number(s.cpuProfileWindowMissedCount??0);
+  const cpuProfileMissedPerformanceWindows=hasCpuProfile&&missedWindowCount>0&&coveredWindowCount===0&&overlappedWindowCount===0;
   const cpuProfileStatus=hasCpuProfile?String(s.cpuProfileStatus||'captured'):pendingPerformanceCapture?'pending-command-no-cpu-profile':'no-cpu-profile';
-  const attributionMode=hasCpuProfile?'cpu-profile-and-performance-observer':hasPerformanceObserverEvidence?'loaf-only-no-cpu-profile':'no-frontend-performance-evidence';
+  const attributionMode=cpuProfileMissedPerformanceWindows?String(s.attributionMode||'cpu-profile-missed-performance-window'):hasCpuProfile?String(s.attributionMode||'cpu-profile-and-performance-observer'):hasPerformanceObserverEvidence?'loaf-only-no-cpu-profile':'no-frontend-performance-evidence';
   const statement=hasCpuProfile
-    ? 'CPU profile artifacts are present; hotspot rows may be used as CPU profile evidence.'
+    ? cpuProfileMissedPerformanceWindows
+      ? 'CPU profile artifacts exist but missed severe performance windows; do not cite CPU profile hotspots as same-window evidence.'
+      : 'CPU profile artifacts are present; hotspot rows may be used as CPU profile evidence.'
     : pendingPerformanceCapture
       ? 'LoAF-only / no CPU profile: performanceCapture is pending or processing, so CPU profile hotspots are unavailable for this run.'
       : 'LoAF-only / no CPU profile: no completed performanceCapture artifact is present, so do not cite CPU profile hotspots.';
-  return {attributionMode,cpuProfileStatus,hasCpuProfile,noCpuProfile:!hasCpuProfile,loafOnly:!hasCpuProfile&&hasPerformanceObserverEvidence,pendingPerformanceCapture,runner,performanceCaptureCommands:commands,statement,valuesRedacted:true};
+  return {attributionMode,cpuProfileStatus,hasCpuProfile,noCpuProfile:!hasCpuProfile,loafOnly:!hasCpuProfile&&hasPerformanceObserverEvidence,pendingPerformanceCapture,cpuProfileMissedPerformanceWindows,runner,performanceCaptureCommands:commands,statement,valuesRedacted:true};
 }
 function performanceSummaryFromReport(){
   const perf=report.frontendPerformance&&typeof report.frontendPerformance==='object'?report.frontendPerformance:{};
diff --git a/scripts/src/hwlab-node/web-observe-collect-performance.test.ts b/scripts/src/hwlab-node/web-observe-collect-performance.test.ts
index 1d200361..03119855 100644
--- a/scripts/src/hwlab-node/web-observe-collect-performance.test.ts
+++ b/scripts/src/hwlab-node/web-observe-collect-performance.test.ts
@@ -250,8 +250,14 @@ test("performance-summary renders CPU profile window misses and source attributi
 
   const output = JSON.parse(result.stdout);
   const text = String(output.renderedText ?? "");
+  const debug = JSON.stringify({ summary: output.summary, evidenceMode: output.evidenceMode, text }, null, 2);
   assert.equal(output.summary.cpuProfileWindowMissedCount, 1);
+  assert.equal(output.evidenceMode.attributionMode, "cpu-profile-missed-performance-window", debug);
+  assert.equal(output.evidenceMode.cpuProfileMissedPerformanceWindows, true, debug);
   assert.match(text, /window correlation=1 covered=0 overlapped=0 missed=1 missing=0 sourceMap=missing/u);
+  assert.match(text, /evidence attribution=cpu-profile-missed-performance-window/u);
+  assert.match(text, /CPU profile artifacts exist but missed severe performance windows; do not cite CPU profile hotspots as same-window evidence/u);
+  assert.doesNotMatch(text, /hotspot rows may be used as CPU profile evidence/u);
   assert.match(text, /cpuWindow=missed/u);
   assert.match(text, /nearest performanceCapture started after/u);
   assert.match(text, /CodeWorkbenchView\.js/u);