Standalone, no Vercel. Probes run inline on page load. No network calls during measurement.
userAgent
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navigator.webdriver
—
webdriver patched (getter)
—
chrome.runtime exists
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window.chrome keys
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--- V8 CDP Leak Probes ---
v8ProtoProxyFired (ownKeys via console.groupEnd)
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v8SubclassFired (Error.message getter via console.debug)
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consoleDebugTimingDelta (ms, %c formatter)
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--- Control / Cross-check ---
perf.now precision (sub-ms?)
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iframe contentWindow check
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