/**
 * Automation / stealth-driver probes + environment coherence.
 *
 * navigator.webdriver alone is not enough: Playwright/Puppeteer stealth
 * kits redefine it to `undefined` via Object.defineProperty. Real Chrome
 * exposes a native boolean (false when not automated). A non-native own
 * getter or Playwright/Selenium globals are decisive.
 *
 * CDP Runtime.enable leaks are *inconclusive* soft evidence only.
 * Industry consensus (2025–2026): Chrome serialization changes and
 * CDP-minimal drivers often never trip the classic console.stack probe —
 * a miss must never be treated as proof of humanity, and a lone hit must
 * not be decisive on its own.
 *
 * Environment coherence (UA ↔ engine ↔ WebGL ↔ platform) catches patched
 * browsers (e.g. Camoufox) that pass webdriver probes but still leak
 * inconsistent fingerprints. Coherence hits are medium-weight: several
 * strong mismatches can block; a single mild mismatch stays soft.
 */
export interface AutomationProbe {
    /** Treat as webdriver for fingerprint scoring. */
    webdriverFlag: boolean;
    /** 0-100 contribution for fingerprint_score. */
    automationScore: number;
    signals: string[];
}
/**
 * Run all probes once per page. Safe to call repeatedly — cheap and
 * side-effect free aside from a cleared console.debug.
 */
export declare function detectAutomation(): AutomationProbe;
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