diff --git a/scripts/src/hwlab-node-web-observe-analyzer-request-runtime-source.ts b/scripts/src/hwlab-node-web-observe-analyzer-request-runtime-source.ts
index 840b1486..6ec3e6de 100644
--- a/scripts/src/hwlab-node-web-observe-analyzer-request-runtime-source.ts
+++ b/scripts/src/hwlab-node-web-observe-analyzer-request-runtime-source.ts
@@ -458,6 +458,9 @@ function buildRuntimeAlerts(samples, control, network, consoleEvents, errors) {
   const significantRequestFailed = requestFailed.filter(
     (item) => !isBenignLongLivedStreamClosureAlert(item) && !isObserverRefreshClosureAlert(item, observerRefreshTimes),
   );
+  const webPerformanceDiagnostics = extractWebPerformanceRuntimeDiagnostics(naturalNetwork, promptTimes);
+  const webPerformancePayloadStates = summarizeWebPerformancePayloadStates(naturalNetwork);
+  const webPerformanceDiagnosticGroups = groupWebPerformanceRuntimeDiagnostics(webPerformanceDiagnostics);
   const domDiagnostics = [];
   const executionErrors = [];
   const baselineExecutionErrors = [];
@@ -588,6 +591,11 @@ function buildRuntimeAlerts(samples, control, network, consoleEvents, errors) {
       workbenchSessionListReadCount,
       workbenchTraceEventsReadCount,
       webPerformanceBeaconFailureCount,
+      webPerformancePayloadRequestCount: webPerformancePayloadStates.total,
+      webPerformancePayloadParsedCount: webPerformancePayloadStates.parsed,
+      webPerformancePayloadParseIssueCount: webPerformancePayloadStates.parseIssue,
+      webPerformanceRuntimeDiagnosticCount: webPerformanceDiagnostics.length,
+      webPerformanceRuntimeDiagnosticGroupCount: webPerformanceDiagnosticGroups.length,
       workbenchEventSourceFailureCount,
       benignLongLivedStreamClosureCount: requestFailed.length - significantRequestFailed.length,
       domDiagnosticSampleCount: domDiagnostics.length,
@@ -608,6 +616,9 @@ function buildRuntimeAlerts(samples, control, network, consoleEvents, errors) {
     networkHttpErrorsByPath: groupNetworkAlerts(httpErrors),
     networkRequestFailedByPath: groupNetworkAlerts(requestFailed),
     networkSignificantRequestFailedByPath: groupNetworkAlerts(significantRequestFailed),
+    webPerformancePayloadStates,
+    webPerformanceRuntimeDiagnostics: webPerformanceDiagnostics.slice(0, 120),
+    webPerformanceRuntimeDiagnosticsByCode: webPerformanceDiagnosticGroups,
     domDiagnostics: domDiagnostics.slice(-80),
     domDiagnosticsByText: groupDomDiagnostics(domDiagnostics),
     domDiagnosticsByFingerprint: groupDomDiagnostics(domDiagnostics).slice(0, 80),
@@ -674,6 +685,179 @@ function groupDomDiagnostics(events) {
     .sort((a, b) => (b.count - a.count) || String(a.firstAt || "").localeCompare(String(b.firstAt || "")));
 }
 
+function extractWebPerformanceRuntimeDiagnostics(network, promptTimes) {
+  const rows = [];
+  for (const item of Array.isArray(network) ? network : []) {
+    const payload = item?.webPerformancePayload && typeof item.webPerformancePayload === "object" ? item.webPerformancePayload : null;
+    if (!payload || payload.parseStatus !== "parsed" || payload.schemaVersion !== "hwlab-web-performance-v2") continue;
+    const events = Array.isArray(payload.events) ? payload.events : [];
+    for (const event of events) {
+      if (!event || typeof event !== "object") continue;
+      const diagnosticCode = limitText(event.diagnosticCode || event.code || "", 120);
+      const reason = limitText(event.reason || "", 120);
+      const eventType = limitText(event.eventType || event.type || event.kind || "", 120);
+      if (!diagnosticCode && !reason && !eventType) continue;
+      rows.push({
+        ts: item.ts ?? event.ts ?? null,
+        promptIndex: promptIndexForTs(promptTimes, item.ts ?? event.ts),
+        pageRole: item.pageRole ?? null,
+        pageId: item.pageId ?? null,
+        commandId: item.commandId ?? null,
+        method: item.method ?? null,
+        urlPath: urlPath(item.url),
+        schemaVersion: payload.schemaVersion,
+        captureStatus: payload.captureStatus ?? null,
+        parseStatus: payload.parseStatus ?? null,
+        byteCount: numberOrNull(payload.byteCount),
+        bodyHash: payload.bodyHash ?? null,
+        eventType,
+        diagnosticCode,
+        reason,
+        module: limitText(event.module || "", 120),
+        traceId: event.traceId ?? null,
+        sessionIdHash: event.sessionIdHash ?? null,
+        eventIdHash: event.eventIdHash ?? null,
+        eventCount: numberOrNull(event.eventCount),
+        deliveredCount: numberOrNull(event.deliveredCount),
+        chunkCount: numberOrNull(event.chunkCount),
+        flushDurationMs: numberOrNull(event.flushDurationMs),
+        droppedCount: numberOrNull(event.droppedCount),
+        maxItemsPerChunk: numberOrNull(event.maxItemsPerChunk),
+        maxChunkMs: numberOrNull(event.maxChunkMs),
+        replacedByKey: typeof event.replacedByKey === "boolean" || typeof event.replacedByKey === "number" ? event.replacedByKey : null,
+        replacedByKeyHash: event.replacedByKeyHash ?? null,
+        valuesRedacted: true,
+      });
+    }
+  }
+  return rows.sort((left, right) => String(left.ts || "").localeCompare(String(right.ts || ""))).slice(-200);
+}
+
+function summarizeWebPerformancePayloadStates(network) {
+  const stateCounts = new Map();
+  let total = 0;
+  let parsed = 0;
+  let parseIssue = 0;
+  let overLimit = 0;
+  let invalidJson = 0;
+  let missingBody = 0;
+  let unsupportedSchema = 0;
+  let capturedEventCount = 0;
+  let storedEventCount = 0;
+  for (const item of Array.isArray(network) ? network : []) {
+    const payload = item?.webPerformancePayload && typeof item.webPerformancePayload === "object" ? item.webPerformancePayload : null;
+    if (!payload) continue;
+    total += 1;
+    const state = String(payload.parseStatus || payload.captureStatus || "unknown");
+    stateCounts.set(state, (stateCounts.get(state) || 0) + 1);
+    if (payload.parseStatus === "parsed") parsed += 1;
+    else parseIssue += 1;
+    if (payload.parseStatus === "not-parsed-over-limit" || payload.captureStatus === "skipped-over-limit") overLimit += 1;
+    if (payload.parseStatus === "invalid-json") invalidJson += 1;
+    if (payload.parseStatus === "missing-body") missingBody += 1;
+    if (payload.parseStatus === "unsupported-schema") unsupportedSchema += 1;
+    if (Number.isFinite(Number(payload.eventCount))) capturedEventCount += Number(payload.eventCount);
+    if (Number.isFinite(Number(payload.storedEventCount))) storedEventCount += Number(payload.storedEventCount);
+  }
+  return {
+    total,
+    parsed,
+    parseIssue,
+    overLimit,
+    invalidJson,
+    missingBody,
+    unsupportedSchema,
+    capturedEventCount,
+    storedEventCount,
+    states: Array.from(stateCounts.entries()).map(([state, count]) => ({ state, count })).sort((a, b) => b.count - a.count || a.state.localeCompare(b.state)),
+    valuesRedacted: true,
+  };
+}
+
+function groupWebPerformanceRuntimeDiagnostics(events) {
+  const groups = new Map();
+  for (const item of Array.isArray(events) ? events : []) {
+    const key = [item.diagnosticCode || item.eventType || "-", item.reason || "-", item.module || "-"].join("|");
+    const group = groups.get(key) || {
+      diagnosticCode: item.diagnosticCode || null,
+      reason: item.reason || null,
+      module: item.module || null,
+      eventType: item.eventType || null,
+      count: 0,
+      firstAt: item.ts || null,
+      lastAt: item.ts || null,
+      promptIndexes: new Set(),
+      traceIds: new Set(),
+      eventCount: 0,
+      deliveredCount: 0,
+      chunkCount: 0,
+      droppedCount: 0,
+      maxFlushDurationMs: null,
+      maxItemsPerChunk: null,
+      maxChunkMs: null,
+      replacedByKeyCount: 0,
+      examples: [],
+    };
+    group.count += 1;
+    group.firstAt = minIso(group.firstAt, item.ts || null);
+    group.lastAt = maxIso(group.lastAt, item.ts || null);
+    if (Number.isFinite(Number(item.promptIndex))) group.promptIndexes.add(Number(item.promptIndex));
+    if (item.traceId) group.traceIds.add(String(item.traceId));
+    group.eventCount += Number(item.eventCount || 0);
+    group.deliveredCount += Number(item.deliveredCount || 0);
+    group.chunkCount += Number(item.chunkCount || 0);
+    group.droppedCount += Number(item.droppedCount || 0);
+    group.maxFlushDurationMs = maxNumber(group.maxFlushDurationMs, item.flushDurationMs);
+    group.maxItemsPerChunk = maxNumber(group.maxItemsPerChunk, item.maxItemsPerChunk);
+    group.maxChunkMs = maxNumber(group.maxChunkMs, item.maxChunkMs);
+    if (Number.isFinite(Number(item.replacedByKey))) group.replacedByKeyCount += Number(item.replacedByKey);
+    else if (item.replacedByKey === true || item.replacedByKeyHash) group.replacedByKeyCount += 1;
+    if (group.examples.length < 6) group.examples.push({
+      ts: item.ts || null,
+      traceId: item.traceId || null,
+      eventCount: item.eventCount ?? null,
+      deliveredCount: item.deliveredCount ?? null,
+      chunkCount: item.chunkCount ?? null,
+      flushDurationMs: item.flushDurationMs ?? null,
+      droppedCount: item.droppedCount ?? null,
+      maxItemsPerChunk: item.maxItemsPerChunk ?? null,
+      maxChunkMs: item.maxChunkMs ?? null,
+      replacedByKey: item.replacedByKey ?? null,
+      replacedByKeyHash: item.replacedByKeyHash ?? null,
+      valuesRedacted: true,
+    });
+    groups.set(key, group);
+  }
+  return Array.from(groups.values()).map((item) => ({
+    diagnosticCode: item.diagnosticCode,
+    reason: item.reason,
+    module: item.module,
+    eventType: item.eventType,
+    count: item.count,
+    firstAt: item.firstAt,
+    lastAt: item.lastAt,
+    promptIndexes: Array.from(item.promptIndexes).sort((a, b) => a - b),
+    traceIds: Array.from(item.traceIds).sort().slice(0, 12),
+    eventCount: item.eventCount,
+    deliveredCount: item.deliveredCount,
+    chunkCount: item.chunkCount,
+    droppedCount: item.droppedCount,
+    maxFlushDurationMs: item.maxFlushDurationMs,
+    maxItemsPerChunk: item.maxItemsPerChunk,
+    maxChunkMs: item.maxChunkMs,
+    replacedByKeyCount: item.replacedByKeyCount,
+    examples: item.examples,
+    valuesRedacted: true,
+  })).sort((left, right) => right.count - left.count || String(left.firstAt || "").localeCompare(String(right.firstAt || "")));
+}
+
+function maxNumber(current, candidate) {
+  const value = Number(candidate);
+  if (!Number.isFinite(value)) return current ?? null;
+  const existing = Number(current);
+  return Number.isFinite(existing) ? Math.max(existing, value) : value;
+}
+
 function isReportableDomDiagnostic(item, preview) {
   if (item?.source === "diagnostic-node" || item?.source === "execution-row") return true;
   return /trace_id=|HTTP\s+\d{3}\b|Failed to load resource|ERR_[A-Z_]+|provider-unavailable|AgentRun error|超过\s*\d+\s*ms\s*无新活动|代理暂时无法连接上游|Trace 更新超时|加载失败/iu.test(String(preview || ""));
diff --git a/scripts/src/hwlab-node-web-observe-analyzer-source.ts b/scripts/src/hwlab-node-web-observe-analyzer-source.ts
index 4a0eca17..5339f43c 100644
--- a/scripts/src/hwlab-node-web-observe-analyzer-source.ts
+++ b/scripts/src/hwlab-node-web-observe-analyzer-source.ts
@@ -276,6 +276,18 @@ console.log(JSON.stringify({
     traceId: item.traceId ?? null,
     text: String(item.preview ?? item.text ?? "").slice(0, 180),
   })),
+  webPerformanceRuntimeDiagnostics: {
+    summary: {
+      payloadRequestCount: recentWindow.runtimeAlerts.summary.webPerformancePayloadRequestCount ?? 0,
+      payloadParsedCount: recentWindow.runtimeAlerts.summary.webPerformancePayloadParsedCount ?? 0,
+      payloadParseIssueCount: recentWindow.runtimeAlerts.summary.webPerformancePayloadParseIssueCount ?? 0,
+      runtimeDiagnosticCount: recentWindow.runtimeAlerts.summary.webPerformanceRuntimeDiagnosticCount ?? 0,
+      runtimeDiagnosticGroupCount: recentWindow.runtimeAlerts.summary.webPerformanceRuntimeDiagnosticGroupCount ?? 0,
+      valuesRedacted: true,
+    },
+    groups: Array.isArray(recentWindow.runtimeAlerts.webPerformanceRuntimeDiagnosticsByCode) ? recentWindow.runtimeAlerts.webPerformanceRuntimeDiagnosticsByCode.slice(0, 8) : [],
+    valuesRedacted: true,
+  },
   turnTimingRecentUpdateJumps: recentWindow.sampleMetrics.turnTimingRecentUpdateSawtoothJumps.slice(0, 8).map((item) => ({
     columnLabel: item.columnLabel ?? item.columnId ?? null,
     pageRole: item.pageRole ?? null,
diff --git a/scripts/src/hwlab-node-web-observe-collect.ts b/scripts/src/hwlab-node-web-observe-collect.ts
index 8cd57981..2aab0dd5 100644
--- a/scripts/src/hwlab-node-web-observe-collect.ts
+++ b/scripts/src/hwlab-node-web-observe-collect.ts
@@ -753,6 +753,12 @@ function compactPerformanceWindow(item){
 function compactPerfFinding(item){
   return {severity:item?.severity??item?.level??null,id:short(item?.id||item?.kind||item?.code||'',56),count:item?.count??item?.sampleCount??null,rootCause:item?.rootCause??item?.rootCauseStatus??null,summary:short(item?.summary||item?.message||'',110),valuesRedacted:true};
 }
+function compactWebPerformanceDiagnosticGroup(item){
+  return {diagnosticCode:short(item?.diagnosticCode||'',64),reason:short(item?.reason||'',48),module:short(item?.module||'',48),eventType:short(item?.eventType||'',48),count:item?.count??null,eventCount:item?.eventCount??null,deliveredCount:item?.deliveredCount??null,chunkCount:item?.chunkCount??null,droppedCount:item?.droppedCount??null,maxFlushDurationMs:item?.maxFlushDurationMs??null,maxItemsPerChunk:item?.maxItemsPerChunk??null,maxChunkMs:item?.maxChunkMs??null,replacedByKeyCount:item?.replacedByKeyCount??null,firstAt:item?.firstAt??null,lastAt:item?.lastAt??null,traceIds:Array.isArray(item?.traceIds)?item.traceIds.slice(0,2).map((id)=>short(id,32)):[],valuesRedacted:true};
+}
+function compactWebPerformancePayloadState(item){
+  return {state:short(item?.state||'',48),count:item?.count??null,valuesRedacted:true};
+}
 function compactPerfCommand(row){
   return {bucket:row?.bucket||null,id:short(commandFileId(row)||'',40),type:short(commandFileType(row)||'',32),ts:short(commandFileTs(row)||'',32),ageSeconds:row?.data?.ageSeconds??null,relative:short(row?.relative||'',72),valuesRedacted:true};
 }
@@ -830,6 +836,9 @@ function performanceWindowsForSummary(rows){
 function performanceSummaryFromReport(){
   const perf=report.frontendPerformance&&typeof report.frontendPerformance==='object'?report.frontendPerformance:{};
   const summary=perf.summary&&typeof perf.summary==='object'?perf.summary:{};
+  const runtime=report.runtimeAlerts&&typeof report.runtimeAlerts==='object'?report.runtimeAlerts:{};
+  const runtimeSummary=runtime.summary&&typeof runtime.summary==='object'?runtime.summary:{};
+  const payloadStates=runtime.webPerformancePayloadStates&&typeof runtime.webPerformancePayloadStates==='object'?runtime.webPerformancePayloadStates:{};
   const findings=Array.isArray(report.findings)?report.findings.filter((item)=>String(item?.id||item?.kind||'').match(/^frontend-(?:long|event-loop|cpu-profile|performance)/u)).slice(0,6).map(compactPerfFinding):[];
   const captureRows=Array.isArray(perf.captures)?perf.captures:[];
   const commandFiles=readCommandFiles();
@@ -843,6 +852,7 @@ function performanceSummaryFromReport(){
     profileStacks:Array.isArray(perf.profileStacks)?perf.profileStacks.slice(0,2).map(compactProfileStack):[],
     captures:captureRows.slice(-3).map(compactPerfCapture),
     sourceAttribution:perf.sourceAttribution&&typeof perf.sourceAttribution==='object'?{sourceMapStatus:perf.sourceAttribution.sourceMapStatus??null,note:short(perf.sourceAttribution.note||'',120),sourceFiles:Array.isArray(perf.sourceAttribution.sourceFiles)?perf.sourceAttribution.sourceFiles.slice(0,4):[],valuesRedacted:true}:null,
+    webPerformanceRuntime:{summary:{payloadRequestCount:runtimeSummary.webPerformancePayloadRequestCount??0,payloadParsedCount:runtimeSummary.webPerformancePayloadParsedCount??0,payloadParseIssueCount:runtimeSummary.webPerformancePayloadParseIssueCount??0,runtimeDiagnosticCount:runtimeSummary.webPerformanceRuntimeDiagnosticCount??0,runtimeDiagnosticGroupCount:runtimeSummary.webPerformanceRuntimeDiagnosticGroupCount??0,capturedEventCount:payloadStates.capturedEventCount??0,storedEventCount:payloadStates.storedEventCount??0,valuesRedacted:true},states:Array.isArray(payloadStates.states)?payloadStates.states.slice(0,6).map(compactWebPerformancePayloadState):[],groups:Array.isArray(runtime.webPerformanceRuntimeDiagnosticsByCode)?runtime.webPerformanceRuntimeDiagnosticsByCode.slice(0,6).map(compactWebPerformanceDiagnosticGroup):[],valuesRedacted:true},
     findings,
     toolFindings:performanceToolFindings(),
     valuesRedacted:true
@@ -881,6 +891,13 @@ function renderPerformanceSummary(perf){
   lines.push('','LoAF script hotspots');
   if(perf.scriptHotspots.length===0) lines.push('-');
   for(const item of perf.scriptHotspots.slice(0,4)) lines.push(String(item.totalDurationMs??0)+'ms total count='+String(item.count??0)+' '+short(item.sourceFunctionName||item.invoker||'(anonymous)',40)+' '+short(item.sourceFile||item.sourceURL||'-',70)+' sourceLine='+String(item.sourceLine??'-')+' rawLine='+String(item.lineNumber??'-')+' char='+String(item.sourceCharPosition??'-')+' sourceMap='+String(item.sourceMapStatus||'-'));
+  const webPerf=perf.webPerformanceRuntime||{};
+  const webPerfSummary=webPerf.summary||{};
+  lines.push('','Web performance runtime diagnostics');
+  lines.push('payloads='+String(webPerfSummary.payloadRequestCount??0)+' parsed='+String(webPerfSummary.payloadParsedCount??0)+' parseIssues='+String(webPerfSummary.payloadParseIssueCount??0)+' events='+String(webPerfSummary.runtimeDiagnosticCount??0)+' groups='+String(webPerfSummary.runtimeDiagnosticGroupCount??0));
+  if(Array.isArray(webPerf.states)&&webPerf.states.length>0) lines.push('  payload states='+webPerf.states.map((item)=>String(item.state||'-')+':'+String(item.count??0)).join(', '));
+  if(!Array.isArray(webPerf.groups)||webPerf.groups.length===0) lines.push('-');
+  for(const item of (webPerf.groups||[]).slice(0,6)) lines.push(String(item.diagnosticCode||item.eventType||'-')+' reason='+String(item.reason||'-')+' module='+String(item.module||'-')+' count='+String(item.count??0)+' eventCount='+String(item.eventCount??'-')+' delivered='+String(item.deliveredCount??'-')+' chunks='+String(item.chunkCount??'-')+' flushMax='+String(item.maxFlushDurationMs??'-')+'ms dropped='+String(item.droppedCount??'-')+' maxItemsPerChunk='+String(item.maxItemsPerChunk??'-')+' maxChunkMs='+String(item.maxChunkMs??'-')+' replacedByKey='+String(item.replacedByKeyCount??'-'));
   lines.push('','Time-window correlation');
   if(!Array.isArray(perf.performanceWindows)||perf.performanceWindows.length===0) lines.push('-');
   for(const item of (perf.performanceWindows||[]).slice(0,3)){
diff --git a/scripts/src/hwlab-node-web-observe-runner-runtime-source.ts b/scripts/src/hwlab-node-web-observe-runner-runtime-source.ts
index c5f65f0b..f9eb716d 100644
--- a/scripts/src/hwlab-node-web-observe-runner-runtime-source.ts
+++ b/scripts/src/hwlab-node-web-observe-runner-runtime-source.ts
@@ -786,6 +786,7 @@ function attachPassiveListeners(targetPage, pageRole = "control", targetPageId =
   void installPagePerformanceProbe(targetPage, pageRole, targetPageId)
     .catch((error) => appendJsonl(files.errors, eventRecord("performance-probe-install-error", { pageRole, pageId: targetPageId, error: errorSummary(error), valuesRedacted: true })));
   targetPage.on("request", (request) => {
+    const webPerformancePayload = summarizeWebPerformanceRequestPayload(request);
     void appendJsonl(files.network, eventRecord("request", {
       pageRole,
       pageId: targetPageId,
@@ -795,6 +796,7 @@ function attachPassiveListeners(targetPage, pageRole = "control", targetPageId =
       url: safeUrl(request.url()),
       resourceType: request.resourceType(),
       frameUrl: safeFrameUrl(request.frame()),
+      ...(webPerformancePayload ? { webPerformancePayload } : {}),
     }));
   });
   targetPage.on("response", (response) => {
@@ -851,5 +853,159 @@ function attachPassiveListeners(targetPage, pageRole = "control", targetPageId =
     void appendJsonl(files.control, eventRecord("continuity-break", { pageRole, pageId: targetPageId, reason: "page-closed" }));
   });
 }
+
+function summarizeWebPerformanceRequestPayload(request) {
+  if (!request || request.method() !== "POST" || !isSameOriginWebPerformanceRequestUrl(request.url())) return null;
+  let raw = null;
+  try {
+    raw = request.postData();
+  } catch (error) {
+    return {
+      captureStatus: "post-data-read-failed",
+      parseStatus: "post-data-read-failed",
+      byteCount: null,
+      byteLimit: webPerformanceRequestBodyMaxBytes,
+      error: errorSummary(error),
+      eventCount: null,
+      events: [],
+      valuesRedacted: true,
+    };
+  }
+  if (raw === null || raw === undefined || raw === "") {
+    return {
+      captureStatus: "missing-body",
+      parseStatus: "missing-body",
+      byteCount: 0,
+      byteLimit: webPerformanceRequestBodyMaxBytes,
+      eventCount: 0,
+      events: [],
+      valuesRedacted: true,
+    };
+  }
+  const byteCount = Buffer.byteLength(raw, "utf8");
+  const bodyHash = sha256Text(raw);
+  if (byteCount > webPerformanceRequestBodyMaxBytes) {
+    return {
+      captureStatus: "skipped-over-limit",
+      parseStatus: "not-parsed-over-limit",
+      byteCount,
+      byteLimit: webPerformanceRequestBodyMaxBytes,
+      bodyHash,
+      truncated: true,
+      eventCount: null,
+      events: [],
+      valuesRedacted: true,
+    };
+  }
+  try {
+    const parsed = JSON.parse(raw);
+    const schemaVersion = typeof parsed?.schemaVersion === "string" ? parsed.schemaVersion : null;
+    if (schemaVersion !== "hwlab-web-performance-v2") {
+      return {
+        captureStatus: "captured",
+        parseStatus: "unsupported-schema",
+        schemaVersion,
+        byteCount,
+        byteLimit: webPerformanceRequestBodyMaxBytes,
+        bodyHash,
+        eventCount: Array.isArray(parsed?.events) ? parsed.events.length : null,
+        events: [],
+        valuesRedacted: true,
+      };
+    }
+    const events = (Array.isArray(parsed.events) ? parsed.events : []).slice(0, 80).map(compactWebPerformancePayloadEvent).filter(Boolean);
+    return {
+      captureStatus: "captured",
+      parseStatus: "parsed",
+      schemaVersion,
+      byteCount,
+      byteLimit: webPerformanceRequestBodyMaxBytes,
+      bodyHash,
+      truncated: false,
+      eventCount: Array.isArray(parsed.events) ? parsed.events.length : 0,
+      storedEventCount: events.length,
+      events,
+      valuesRedacted: true,
+    };
+  } catch (error) {
+    return {
+      captureStatus: "captured",
+      parseStatus: "invalid-json",
+      byteCount,
+      byteLimit: webPerformanceRequestBodyMaxBytes,
+      bodyHash,
+      parseError: truncate(error?.message || String(error), 180),
+      eventCount: null,
+      events: [],
+      valuesRedacted: true,
+    };
+  }
+}
+
+function isSameOriginWebPerformanceRequestUrl(value) {
+  try {
+    const url = new URL(String(value || ""), baseUrl);
+    return url.origin === baseUrl && url.pathname === "/v1/web-performance";
+  } catch {
+    return false;
+  }
+}
+
+function compactWebPerformancePayloadEvent(event) {
+  if (!event || typeof event !== "object") return null;
+  const detail = firstObject(event.detail, event.details, event.payload, event.data, event.metrics);
+  const read = (key) => event?.[key] ?? detail?.[key] ?? null;
+  const diagnosticCode = compactString(read("diagnosticCode") ?? read("code") ?? read("name"), 96);
+  const reason = compactString(read("reason"), 96);
+  const module = compactString(read("module"), 96);
+  const eventType = compactString(read("eventType") ?? read("type") ?? read("kind"), 96);
+  const traceId = compactTraceId(read("traceId"));
+  const sessionId = compactString(read("sessionId"), 120);
+  const replacedByKey = compactScalar(read("replacedByKey"));
+  const eventId = compactString(read("eventId") ?? read("id"), 120);
+  return {
+    ts: compactString(read("ts") ?? read("timestamp") ?? read("time"), 64),
+    eventType,
+    diagnosticCode,
+    reason,
+    module,
+    traceId,
+    sessionIdHash: sessionId ? sha256Text(sessionId) : null,
+    eventIdHash: eventId ? sha256Text(eventId) : null,
+    eventCount: numberOrNull(read("eventCount")),
+    deliveredCount: numberOrNull(read("deliveredCount")),
+    chunkCount: numberOrNull(read("chunkCount")),
+    flushDurationMs: numberOrNull(read("flushDurationMs")),
+    droppedCount: numberOrNull(read("droppedCount")),
+    maxItemsPerChunk: numberOrNull(read("maxItemsPerChunk")),
+    maxChunkMs: numberOrNull(read("maxChunkMs")),
+    replacedByKey: typeof replacedByKey === "boolean" || typeof replacedByKey === "number" ? replacedByKey : null,
+    replacedByKeyHash: typeof replacedByKey === "string" ? sha256Text(replacedByKey) : null,
+    valuesRedacted: true,
+  };
+}
+
+function firstObject(...values) {
+  for (const value of values) if (value && typeof value === "object" && !Array.isArray(value)) return value;
+  return {};
+}
+
+function compactString(value, limit) {
+  if (value === null || value === undefined) return null;
+  return truncate(String(value), limit);
+}
+
+function compactTraceId(value) {
+  const text = String(value || "");
+  return /^trc_[A-Za-z0-9_-]+$/u.test(text) ? text : null;
+}
+
+function compactScalar(value) {
+  if (value === null || value === undefined) return null;
+  if (typeof value === "boolean") return value;
+  const numeric = Number(value);
+  if (Number.isFinite(numeric) && String(value).trim() !== "") return numeric;
+  return truncate(String(value), 120);
+}
 `;
 }
diff --git a/scripts/src/hwlab-node-web-observe-runner-source.ts b/scripts/src/hwlab-node-web-observe-runner-source.ts
index c5bfdecc..6492d7a3 100644
--- a/scripts/src/hwlab-node-web-observe-runner-source.ts
+++ b/scripts/src/hwlab-node-web-observe-runner-source.ts
@@ -33,6 +33,7 @@ const observerRefreshIntervalMs = positiveInteger(process.env.UNIDESK_WEB_OBSERV
 const maxRunMs = positiveInteger(process.env.UNIDESK_WEB_OBSERVE_MAX_RUN_MS, 0);
 const viewport = parseViewport(process.env.UNIDESK_WEB_OBSERVE_VIEWPORT || "1440x900");
 const browserProxyMode = parseBrowserProxyMode(process.env.UNIDESK_WEB_OBSERVE_BROWSER_PROXY_MODE || "auto");
+const webPerformanceRequestBodyMaxBytes = boundedInteger(process.env.UNIDESK_WEB_OBSERVE_WEB_PERFORMANCE_BODY_MAX_BYTES, 65536, 1024, 1048576);
 const authLoginMaxAttempts = boundedInteger(process.env.UNIDESK_WEB_OBSERVE_AUTH_LOGIN_MAX_ATTEMPTS, 6, 1, 20);
 const authLoginRequestTimeoutMs = boundedInteger(process.env.UNIDESK_WEB_OBSERVE_AUTH_LOGIN_REQUEST_TIMEOUT_MS, 30000, 1000, 120000);
 const authLoginInitialDelayMs = boundedInteger(process.env.UNIDESK_WEB_OBSERVE_AUTH_LOGIN_INITIAL_DELAY_MS, 500, 0, 60000);
diff --git a/scripts/src/hwlab-node/web-observe-web-performance-payload.test.ts b/scripts/src/hwlab-node/web-observe-web-performance-payload.test.ts
new file mode 100644
index 00000000..acee5a16
--- /dev/null
+++ b/scripts/src/hwlab-node/web-observe-web-performance-payload.test.ts
@@ -0,0 +1,216 @@
+import assert from "node:assert/strict";
+import { mkdir, mkdtemp, readFile, writeFile } from "node:fs/promises";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import { spawnSync } from "node:child_process";
+import { test } from "bun:test";
+
+import { nodeWebObserveAnalyzerSource } from "../hwlab-node-web-observe-analyzer-source";
+import { nodeWebObserveCollectViewNodeScript } from "../hwlab-node-web-observe-collect";
+
+const alertThresholds = {
+  sameOriginApiSlowMs: 60000,
+  partialApiSlowMs: 60000,
+  longLivedStreamOpenSlowMs: 60000,
+  visibleLoadingSlowMs: 60000,
+  turnTimingSampleSlackSeconds: 60,
+  turnElapsedSevereTimeoutSeconds: 3600,
+  domEvaluateTimeoutRedCount: 99,
+  domEvaluateTimeoutRedWindowMs: 60000,
+  screenshotTimeoutRedCount: 99,
+  pageErrorRedCount: 99,
+  longTaskRedMs: 1000,
+  longAnimationFrameRedMs: 1000,
+  eventLoopGapRedMs: 1000,
+  browserProcessSampleIntervalMs: 1000,
+  requestRateBucketMs: 10000,
+  requestRateTotalRedPerMinute: 999999,
+  requestRatePageRedPerMinute: 999999,
+  requestRateApiPathRedPerMinute: 999999,
+  browserTotalRssRedMb: 999999,
+  browserProcessRssRedMb: 999999,
+  browserRssGrowthRedMb: 999999,
+  browserRssGrowthWindowMs: 60000,
+  playwrightResponsivenessRedMs: 60000,
+  playwrightResponsivenessTimeoutRedCount: 99,
+  cdpMetricsTimeoutRedCount: 99,
+  uncommandedStateChangeCommandWindowMs: 1000,
+  scrollJumpCommandWindowMs: 1000,
+  scrollJumpFromY: 999999,
+  scrollJumpToY: 999999,
+  sessionRailFallbackRatio: 0.5,
+};
+
+const browserFreezePolicy = {
+  enabled: true,
+  blockerWindowMs: 60000,
+  memory: { totalRssBlockerMb: 999999, processRssBlockerMb: 999999, growthBlockerMb: 999999 },
+  responsiveness: { latencyBlockerMs: 60000, eventBlockerCount: 99 },
+  cdp: { metricsTimeoutBlockerCount: 99 },
+  kill: { enabled: false, gracefulSignal: "SIGTERM", forceSignal: "SIGKILL", graceMs: 1000, pollIntervalMs: 100, exitCode: 124 },
+};
+
+function shellQuote(value: string): string {
+  return `'${value.replace(/'/g, `'\\''`)}'`;
+}
+
+async function writeJsonl(path: string, rows: Array<Record<string, unknown>>): Promise<void> {
+  await writeFile(path, rows.map((row) => JSON.stringify(row)).join("\n") + (rows.length > 0 ? "\n" : ""));
+}
+
+async function runAnalyzer(stateDir: string): Promise<Record<string, unknown>> {
+  const analyzerPath = join(stateDir, "analyze.mjs");
+  await writeFile(analyzerPath, nodeWebObserveAnalyzerSource(), { mode: 0o700 });
+  const result = spawnSync("bun", [analyzerPath, stateDir], {
+    cwd: join(import.meta.dir, "../../.."),
+    env: {
+      ...process.env,
+      UNIDESK_WEB_OBSERVE_ANALYZE_TAIL_SAMPLES: "0",
+      UNIDESK_WEB_OBSERVE_ALERT_THRESHOLDS_JSON: JSON.stringify(alertThresholds),
+      UNIDESK_WEB_OBSERVE_BROWSER_FREEZE_POLICY_JSON: JSON.stringify(browserFreezePolicy),
+    },
+    encoding: "utf8",
+  });
+  assert.equal(result.status, 0, result.stderr || result.stdout);
+  return JSON.parse(await readFile(join(stateDir, "analysis", "report.json"), "utf8")) as Record<string, unknown>;
+}
+
+async function writeState(): Promise<string> {
+  const stateDir = await mkdtemp(join(tmpdir(), "unidesk-web-observe-web-performance-"));
+  await mkdir(join(stateDir, "analysis"), { recursive: true });
+  await writeFile(join(stateDir, "manifest.json"), JSON.stringify({ jobId: "webobs-web-performance-test", status: "completed" }) + "\n");
+  await writeFile(join(stateDir, "heartbeat.json"), JSON.stringify({ status: "completed", updatedAt: "2026-07-02T17:00:05.000Z" }) + "\n");
+  await writeJsonl(join(stateDir, "samples.jsonl"), []);
+  await writeJsonl(join(stateDir, "console.jsonl"), []);
+  await writeJsonl(join(stateDir, "errors.jsonl"), []);
+  await writeJsonl(join(stateDir, "browser-process.jsonl"), []);
+  await writeJsonl(join(stateDir, "performance-events.jsonl"), []);
+  await writeJsonl(join(stateDir, "artifacts.jsonl"), []);
+  await writeJsonl(join(stateDir, "control.jsonl"), [{
+    type: "sendPrompt",
+    phase: "completed",
+    commandId: "cmd-prompt",
+    ts: "2026-07-02T17:00:00.000Z",
+  }]);
+  await writeJsonl(join(stateDir, "network.jsonl"), [
+    {
+      type: "request",
+      ts: "2026-07-02T17:00:01.000Z",
+      pageRole: "control",
+      pageId: "page-1",
+      method: "POST",
+      url: "https://hwlab.example.test/v1/web-performance",
+      resourceType: "fetch",
+      webPerformancePayload: {
+        captureStatus: "captured",
+        parseStatus: "parsed",
+        schemaVersion: "hwlab-web-performance-v2",
+        byteCount: 768,
+        byteLimit: 65536,
+        bodyHash: "sha256:payload",
+        eventCount: 1,
+        storedEventCount: 1,
+        events: [{
+          ts: "2026-07-02T17:00:01.000Z",
+          eventType: "runtime_diagnostic",
+          diagnosticCode: "workbench_sse_flush",
+          reason: "sse_flush",
+          module: "workbench-runtime",
+          traceId: "trc_webperf_fixture",
+          sessionIdHash: "sha256:session",
+          eventCount: 12,
+          deliveredCount: 10,
+          chunkCount: 3,
+          flushDurationMs: 18.75,
+          droppedCount: 2,
+          maxItemsPerChunk: 5,
+          maxChunkMs: 7.5,
+          replacedByKey: 3,
+          valuesRedacted: true,
+        }],
+        valuesRedacted: true,
+      },
+    },
+    {
+      type: "request",
+      ts: "2026-07-02T17:00:02.000Z",
+      method: "POST",
+      url: "https://hwlab.example.test/v1/web-performance",
+      webPerformancePayload: {
+        captureStatus: "captured",
+        parseStatus: "invalid-json",
+        byteCount: 12,
+        byteLimit: 65536,
+        bodyHash: "sha256:invalid",
+        eventCount: null,
+        events: [],
+        valuesRedacted: true,
+      },
+    },
+    {
+      type: "request",
+      ts: "2026-07-02T17:00:03.000Z",
+      method: "POST",
+      url: "https://hwlab.example.test/v1/web-performance",
+      webPerformancePayload: {
+        captureStatus: "skipped-over-limit",
+        parseStatus: "not-parsed-over-limit",
+        byteCount: 70000,
+        byteLimit: 65536,
+        bodyHash: "sha256:large",
+        eventCount: null,
+        events: [],
+        valuesRedacted: true,
+      },
+    },
+  ]);
+  return stateDir;
+}
+
+test("analyzer and performance-summary include bounded web-performance runtime diagnostics", async () => {
+  const stateDir = await writeState();
+  const report = await runAnalyzer(stateDir);
+  const runtimeAlerts = report.runtimeAlerts as Record<string, unknown>;
+  const summary = runtimeAlerts.summary as Record<string, unknown>;
+  assert.equal(summary.webPerformancePayloadRequestCount, 3);
+  assert.equal(summary.webPerformancePayloadParsedCount, 1);
+  assert.equal(summary.webPerformancePayloadParseIssueCount, 2);
+  assert.equal(summary.webPerformanceRuntimeDiagnosticCount, 1);
+
+  const groups = runtimeAlerts.webPerformanceRuntimeDiagnosticsByCode as Array<Record<string, unknown>>;
+  assert.equal(groups[0].diagnosticCode, "workbench_sse_flush");
+  assert.equal(groups[0].reason, "sse_flush");
+  assert.equal(groups[0].module, "workbench-runtime");
+  assert.equal(groups[0].eventCount, 12);
+  assert.equal(groups[0].deliveredCount, 10);
+  assert.equal(groups[0].chunkCount, 3);
+  assert.equal(groups[0].maxFlushDurationMs, 18.75);
+  assert.equal(groups[0].replacedByKeyCount, 3);
+
+  const reportText = JSON.stringify(report);
+  assert.match(reportText, /workbench_sse_flush/u);
+  assert.doesNotMatch(reportText, /rawBody|super-secret|ses_unredacted/u);
+
+  const script = nodeWebObserveCollectViewNodeScript({
+    maxFiles: 100,
+    view: "performance-summary",
+    traceId: null,
+    sampleSeq: null,
+    timestamp: null,
+    turn: null,
+    commandId: null,
+    windowMs: null,
+  });
+  const result = spawnSync("bash", ["-lc", `state_dir=${shellQuote(stateDir)}\n${script}`], {
+    cwd: join(import.meta.dir, "../../.."),
+    encoding: "utf8",
+  });
+  assert.equal(result.status, 0, result.stderr || result.stdout);
+  const output = JSON.parse(result.stdout);
+  const renderedText = String(output.renderedText ?? "");
+  assert.match(renderedText, /Web performance runtime diagnostics/u);
+  assert.match(renderedText, /payloads=3 parsed=1 parseIssues=2 events=1 groups=1/u);
+  assert.match(renderedText, /workbench_sse_flush reason=sse_flush module=workbench-runtime/u);
+  assert.match(renderedText, /eventCount=12 delivered=10 chunks=3 flushMax=18.75ms dropped=2/u);
+  assert.match(renderedText, /payload states=invalid-json:1, not-parsed-over-limit:1, parsed:1/u);
+}, 20_000);