diff --git a/scripts/src/hwlab-node-impl.ts b/scripts/src/hwlab-node-impl.ts
index 7ec6e634..989c274c 100644
--- a/scripts/src/hwlab-node-impl.ts
+++ b/scripts/src/hwlab-node-impl.ts
@@ -7444,7 +7444,102 @@ function runNodeWebProbeObserveAnalyze(options: NodeWebProbeObserveOptions, spec
     "node -e \"const fs=require('fs'); fs.writeFileSync(process.argv[1], Buffer.from(fs.readFileSync(process.argv[2], 'utf8').replace(/\\s+/g, ''), 'base64'))\" \"$analyzer\" \"$analyzer_b64\"",
     "rm -f \"$analyzer_b64\"",
     "chmod 700 \"$analyzer\"",
-    "UNIDESK_WEB_OBSERVE_STATE_DIR=\"$state_dir\" node \"$analyzer\"",
+    "mkdir -p \"$state_dir/analysis\"",
+    "analysis_stdout=\"$state_dir/analysis/analyzer-stdout.json\"",
+    "analysis_stderr=\"$state_dir/analysis/analyzer-stderr.log\"",
+    "set +e",
+    "UNIDESK_WEB_OBSERVE_STATE_DIR=\"$state_dir\" node \"$analyzer\" >\"$analysis_stdout\" 2>\"$analysis_stderr\"",
+    "analyzer_exit=$?",
+    "set -e",
+    "report_json=\"$state_dir/analysis/report.json\"",
+    "report_md=\"$state_dir/analysis/report.md\"",
+    "node - \"$analysis_stdout\" \"$analysis_stderr\" \"$report_json\" \"$report_md\" \"$analyzer_exit\" <<'UNIDESK_WEB_OBSERVE_ANALYZE_COMPACT'",
+    "const fs = require('fs');",
+    "const crypto = require('crypto');",
+    "const [stdoutPath, stderrPath, reportJsonPath, reportMdPath, analyzerExitRaw] = process.argv.slice(2);",
+    "const analyzerExit = Number(analyzerExitRaw);",
+    "const readText = (path) => { try { return fs.readFileSync(path, 'utf8'); } catch { return ''; } };",
+    "const readJson = (path) => { const text = readText(path); if (!text.trim()) return null; try { return JSON.parse(text); } catch { return null; } };",
+    "const sha256 = (path) => { const text = readText(path); return text ? 'sha256:' + crypto.createHash('sha256').update(text).digest('hex') : null; };",
+    "const statSize = (path) => { try { return fs.statSync(path).size; } catch { return 0; } };",
+    "const tail = (text, limit = 1200) => String(text || '').slice(-limit);",
+    "const takeHead = (value, limit) => Array.isArray(value) ? value.slice(0, limit) : [];",
+    "const takeTail = (value, limit) => Array.isArray(value) ? value.slice(-limit) : [];",
+    "const clip = (value, limit = 160) => value === null || value === undefined ? null : String(value).slice(0, limit);",
+    "const stdoutJson = readJson(stdoutPath);",
+    "const reportJson = readJson(reportJsonPath);",
+    "const source = (stdoutJson && stdoutJson.ok !== false ? stdoutJson : null) || reportJson || stdoutJson || null;",
+    "const objectOrNull = (value) => value && typeof value === 'object' && !Array.isArray(value) ? value : null;",
+    "const slimRound = (item) => { const v = objectOrNull(item) || {}; return { promptIndex: v.promptIndex ?? null, sampleCount: v.sampleCount ?? null, lastTotalElapsedSeconds: v.lastTotalElapsedSeconds ?? null, lastRecentUpdateSeconds: v.lastRecentUpdateSeconds ?? null, diagnosticSamples: v.diagnosticSamples ?? null, terminalSamples: v.terminalSamples ?? null, promptTextHash: clip(v.promptTextHash, 80) }; };",
+    "const slimTurnColumn = (item) => { const v = objectOrNull(item) || {}; return { label: clip(v.label, 24), promptIndex: v.promptIndex ?? null, lastPromptIndex: v.lastPromptIndex ?? null, traceId: clip(v.traceId, 48), firstSeq: v.firstSeq ?? null, lastSeq: v.lastSeq ?? null, source: clip(v.source, 48) }; };",
+    "const slimSlowApi = (item) => { const v = objectOrNull(item) || {}; return { path: clip(v.path ?? v.route, 96), route: clip(v.route ?? v.path, 96), sampleCount: v.sampleCount ?? null, p95Ms: v.p95Ms ?? v.p95 ?? null, maxMs: v.maxMs ?? v.max ?? null, overFiveSecondCount: v.overFiveSecondCount ?? null }; };",
+    "const slimFinding = (item) => { const v = objectOrNull(item) || {}; return { kind: clip(v.kind ?? v.code, 48), code: clip(v.code ?? v.kind, 48), severity: clip(v.severity ?? v.level, 24), level: clip(v.level ?? v.severity, 24), count: v.count ?? v.sampleCount ?? null, sampleCount: v.sampleCount ?? v.count ?? null, summary: clip(v.summary ?? v.message, 180), message: clip(v.message ?? v.summary, 180) }; };",
+    "const slimDomGroup = (item) => { const v = objectOrNull(item) || {}; return { count: v.count ?? null, firstAt: v.firstAt ?? null, lastAt: v.lastAt ?? null, text: clip(v.text ?? v.preview, 180) }; };",
+    "const slimDomSample = (item) => { const v = objectOrNull(item) || {}; return { seq: v.seq ?? null, ts: v.ts ?? null, source: clip(v.source, 32), diagnosticCode: clip(v.diagnosticCode, 48), traceId: clip(v.traceId, 64), httpStatus: v.httpStatus ?? null, idleSeconds: v.idleSeconds ?? null, waitingFor: clip(v.waitingFor, 48), lastEventLabel: clip(v.lastEventLabel, 80), text: clip(v.text ?? v.preview, 180) }; };",
+    "const slimConsoleGroup = (item) => { const v = objectOrNull(item) || {}; return { count: v.count ?? null, type: clip(v.type, 24), status: v.status ?? null, path: clip(v.path, 96), lastAt: v.lastAt ?? v.firstAt ?? null, firstAt: v.firstAt ?? null, traceIds: Array.isArray(v.traceIds) ? v.traceIds.slice(0, 3).map((x) => clip(x, 64)) : [] }; };",
+    "const slimConsoleSample = (item) => { const v = objectOrNull(item) || {}; return { ts: v.ts ?? null, type: clip(v.type, 24), status: v.status ?? null, path: clip(v.path, 96), traceId: clip(v.traceId, 64), text: clip(v.text, 180) }; };",
+    "const slimJump = (item) => { const v = objectOrNull(item) || {}; return { columnLabel: v.columnLabel ?? null, promptIndex: v.promptIndex ?? null, fromSeq: v.fromSeq ?? null, toSeq: v.toSeq ?? null, fromValue: v.fromValue ?? null, toValue: v.toValue ?? null, delta: v.delta ?? null, sampleDeltaSeconds: v.sampleDeltaSeconds ?? null, allowedIncreaseSeconds: v.allowedIncreaseSeconds ?? null, traceId: v.traceId ?? null }; };",
+    "const srcMetrics = objectOrNull(source?.sampleMetrics);",
+    "const metrics = srcMetrics ? {",
+    "  roundItems: takeTail(srcMetrics.roundItems, 8).map(slimRound),",
+    "  rounds: Array.isArray(srcMetrics.rounds) ? takeTail(srcMetrics.rounds, 8).map(slimRound) : srcMetrics.rounds,",
+    "  turnColumns: takeTail(srcMetrics.turnColumns, 8).map(slimTurnColumn),",
+    "  turnTimingRows: srcMetrics.turnTimingRows ?? null,",
+    "  turnTimingNonMonotonicCount: srcMetrics.turnTimingNonMonotonicCount ?? null,",
+    "  turnTimingTotalElapsedDecreaseCount: srcMetrics.turnTimingTotalElapsedDecreaseCount ?? null,",
+    "  turnTimingTerminalElapsedGrowthCount: srcMetrics.turnTimingTerminalElapsedGrowthCount ?? null,",
+    "  turnTimingRecentUpdateJumpCount: srcMetrics.turnTimingRecentUpdateJumpCount ?? null,",
+    "  turnTimingRecentUpdateSawtoothJumpCount: srcMetrics.turnTimingRecentUpdateSawtoothJumpCount ?? null,",
+    "  turnTimingRecentUpdateMaxIncreaseSeconds: srcMetrics.turnTimingRecentUpdateMaxIncreaseSeconds ?? null,",
+    "  promptSegments: srcMetrics.promptSegments ?? null",
+    "} : null;",
+    "const srcRuntimeAlerts = objectOrNull(source?.runtimeAlerts);",
+    "const runtimeAlerts = srcRuntimeAlerts ? { httpErrorCount: srcRuntimeAlerts.httpErrorCount ?? null, requestFailedCount: srcRuntimeAlerts.requestFailedCount ?? null, domDiagnosticSampleCount: srcRuntimeAlerts.domDiagnosticSampleCount ?? null, consoleAlertCount: srcRuntimeAlerts.consoleAlertCount ?? null } : null;",
+    "const srcPagePerformance = objectOrNull(source?.pagePerformance);",
+    "const pagePerformance = srcPagePerformance ? { sameOriginApiPaths: srcPagePerformance.sameOriginApiPaths ?? null, slowPathCount: srcPagePerformance.slowPathCount ?? null, slowSampleCount: srcPagePerformance.slowSampleCount ?? null, worstP95Ms: srcPagePerformance.worstP95Ms ?? null } : null;",
+    "const srcPromptNetwork = objectOrNull(source?.promptNetwork);",
+    "const promptNetwork = srcPromptNetwork ? { promptSegments: srcPromptNetwork.promptSegments ?? null } : null;",
+    "const compact = source ? {",
+    "  ok: analyzerExit === 0 && source.ok !== false,",
+    "  counts: source.counts ?? null,",
+    "  sampleMetrics: metrics,",
+    "  runtimeAlerts,",
+    "  pagePerformance,",
+    "  promptNetwork,",
+    "  pagePerformanceSlowApi: takeHead(source.pagePerformanceSlowApi, 5).map(slimSlowApi),",
+    "  findings: takeHead(source.findings, 8).map(slimFinding),",
+    "  domDiagnosticGroups: takeHead(source.domDiagnosticGroups, 5).map(slimDomGroup),",
+    "  domDiagnosticSamples: takeHead(source.domDiagnosticSamples, 5).map(slimDomSample),",
+    "  consoleAlertGroups: takeHead(source.consoleAlertGroups, 5).map(slimConsoleGroup),",
+    "  consoleAlertSamples: takeHead(source.consoleAlertSamples, 5).map(slimConsoleSample),",
+    "  turnTimingRecentUpdateJumps: takeHead(source.turnTimingRecentUpdateJumps, 5).map(slimJump),",
+    "  reportJsonPath: source.reportJsonPath || reportJsonPath,",
+    "  reportJsonSha256: source.reportJsonSha256 || sha256(reportJsonPath),",
+    "  reportMdPath: source.reportMdPath || reportMdPath,",
+    "  reportMdSha256: source.reportMdSha256 || sha256(reportMdPath),",
+    "  analyzer: {",
+    "    exitCode: Number.isFinite(analyzerExit) ? analyzerExit : null,",
+    "    recoveredFrom: stdoutJson && stdoutJson.ok !== false ? 'stdout' : reportJson ? 'report-file' : stdoutJson ? 'stdout-error' : 'missing-output',",
+    "    stdoutBytes: statSize(stdoutPath),",
+    "    stderrBytes: statSize(stderrPath),",
+    "    stderrTail: tail(readText(stderrPath))",
+    "  }",
+    "} : {",
+    "  ok: false,",
+    "  error: 'web-probe-analyzer-output-missing',",
+    "  reportJsonPath,",
+    "  reportMdPath,",
+    "  analyzer: {",
+    "    exitCode: Number.isFinite(analyzerExit) ? analyzerExit : null,",
+    "    recoveredFrom: 'missing-output',",
+    "    stdoutBytes: statSize(stdoutPath),",
+    "    stderrBytes: statSize(stderrPath),",
+    "    stderrTail: tail(readText(stderrPath))",
+    "  }",
+    "};",
+    "console.log(JSON.stringify(compact));",
+    "UNIDESK_WEB_OBSERVE_ANALYZE_COMPACT",
+    "exit \"$analyzer_exit\"",
   ].join("\n");
   const result = runTransWorkspaceStdinScript(options.node, spec.workspace, script, options.commandTimeoutSeconds);
   const analysis = parseJsonObject(result.stdout);
@@ -7457,7 +7552,7 @@ function runNodeWebProbeObserveAnalyze(options: NodeWebProbeObserveOptions, spec
     lane: options.lane,
     workspace: spec.workspace,
     analysis,
-    result: compactCommandResult(result),
+    result: analysis === null ? compactCommandResultWithStdoutTail(result) : compactCommandResult(result),
     valuesRedacted: true,
   });
 }
@@ -7473,6 +7568,7 @@ function withWebObserveAnalyzeRendered(value: Record<string, unknown>): Rendered
 
 function renderWebObserveAnalyzeTable(value: Record<string, unknown>): string {
   const analysis = record(value.analysis);
+  const analyzer = record(analysis?.analyzer);
   const result = record(value.result);
   const counts = record(analysis?.counts);
   const sampleMetrics = record(analysis?.sampleMetrics);
@@ -7544,11 +7640,17 @@ function renderWebObserveAnalyzeTable(value: Record<string, unknown>): string {
     "",
     ...(value.ok === false ? [
       "Blocked detail:",
-      webObserveTable(["EXIT", "TIMEOUT", "STDOUT", "STDERR"], [[
+      webObserveTable(["EXIT", "TIMEOUT", "ANALYZER", "STDOUT", "STDERR"], [[
         webObserveText(result.exitCode),
         webObserveText(result.timedOut),
+        webObserveShort([
+          analyzer?.recoveredFrom ? `source=${webObserveText(analyzer.recoveredFrom)}` : "",
+          analyzer?.exitCode !== undefined && analyzer?.exitCode !== null ? `exit=${webObserveText(analyzer.exitCode)}` : "",
+          analyzer?.stdoutBytes !== undefined && analyzer?.stdoutBytes !== null ? `stdout=${webObserveText(analyzer.stdoutBytes)}B` : "",
+          analyzer?.stderrBytes !== undefined && analyzer?.stderrBytes !== null ? `stderr=${webObserveText(analyzer.stderrBytes)}B` : "",
+        ].filter((part) => part !== "").join(" "), 120),
         webObserveShort(webObserveText(result.stdoutTail), 120),
-        webObserveShort(webObserveText(result.stderr), 120),
+        webObserveShort(webObserveText(analyzer?.stderrTail ?? result.stderr), 500),
       ]]),
       "",
     ] : []),
diff --git a/scripts/src/hwlab-node-web-observe-runner-source.ts b/scripts/src/hwlab-node-web-observe-runner-source.ts
index 669d73e1..4e089097 100644
--- a/scripts/src/hwlab-node-web-observe-runner-source.ts
+++ b/scripts/src/hwlab-node-web-observe-runner-source.ts
@@ -813,7 +813,7 @@ async function samplePage(reason) {
     const activeSessionId = activeSession ? activeSession.getAttribute("data-session-id") : null;
     const messageSelector = '[data-testid*="message" i], [class*="message" i], article, [role="article"]';
     const traceSelector = '[data-testid*="trace" i], [class*="trace" i], [data-trace-id], [data-testid*="event" i]';
-    const diagnosticSelector = '.api-error-diagnostic, .api-error-diagnostic.message-diagnostic, .api-error-diagnostic.projection-diagnostic, [data-testid="api-error-diagnostic" i], [data-testid="error-diagnostic" i], [role="alert"], .alert, .warning, .error';
+    const diagnosticSelector = '.api-error-diagnostic, [class*="api-error-diagnostic" i], [class*="message-diagnostic" i], [class*="projection-diagnostic" i], [data-testid="api-error-diagnostic" i], [data-testid="error-diagnostic" i], [data-testid*="diagnostic" i], [role="alert"], [aria-live="assertive"]';
     const messages = summarize(messageSelector, 20);
     const traceRows = summarize(traceSelector, 30);
     const diagnostics = Array.from(document.querySelectorAll(diagnosticSelector)).filter(visible).slice(-40).map((element, index) => {
@@ -1720,6 +1720,28 @@ function parseDomDiagnosticSummary(text) {
   };
 }
 
+function isDomDiagnosticSampleText(text) {
+  const value = String(text || "").replace(/\s+/g, " ").trim();
+  if (!value) return false;
+  const strongDiagnostic = [
+    /\bHTTP\s+[45][0-9]{2}\b(?:[\s\S]{0,120}\btrace_id=|\b)/iu,
+    /\btrace_id=(?:trc_[A-Za-z0-9_-]+|[a-f0-9]{16,64})\b/iu,
+    /workbench\s+turn\s*超过\s*\d+ms\s*无新活动/iu,
+    /\bturn\s*超过\b[\s\S]{0,120}\b无新活动\b/iu,
+    /\bprojection-resume:sync-failed\b/iu,
+    /\bAgentRun\s+GET\b[\s\S]*\/result\b[\s\S]*timed out after\s+\d+ms\b/iu,
+    /\bFailed to fetch\b/iu,
+    /\bFailed to load resource\b[\s\S]{0,180}\bstatus of\s+[45][0-9]{2}\b/iu,
+    /\bserver responded with a status of\s+[45][0-9]{2}\b/iu,
+    /Code Agent\b[\s\S]{0,120}(?:无法连接上游|请求已结束)/iu
+  ].some((pattern) => pattern.test(value));
+  if (!strongDiagnostic) return false;
+  const looksLikeToolStdout = /\b(?:stdout|stderr):/iu.test(value)
+    && /(?:\becho\s+["']?===|\bnode\s+|\.tspy\b|tspy\/|===\s*[A-Za-z0-9_.-]+\s*===)/iu.test(value);
+  if (!looksLikeToolStdout) return true;
+  return /\b(?:trace_id=|HTTP\s+[45][0-9]{2}|workbench\s+turn\s*超过|projection-resume:sync-failed|Failed to fetch|Failed to load resource|server responded with a status of\s+[45][0-9]{2}|Code Agent\b[\s\S]{0,120}(?:无法连接上游|请求已结束))\b/iu.test(value);
+}
+
 function buildRuntimeAlerts(samples, control, network, consoleEvents, errors) {
   const promptTimes = control
     .filter((item) => item.type === "sendPrompt" && item.phase === "completed")
@@ -1767,7 +1789,7 @@ function buildRuntimeAlerts(samples, control, network, consoleEvents, errors) {
         });
       }
     }
-    const texts = sampleTexts(sample).filter(isDiagnosticText);
+    const texts = sampleTexts(sample).filter(isDomDiagnosticSampleText);
     for (const text of texts.slice(0, 4)) {
       const parsedDiagnostic = parseDomDiagnosticSummary(text);
       domDiagnostics.push({