/**
 * Timing signal collectors. D42.
 *
 * Computes SIG_SUBHUMAN_LATENCY and SIG_OFF_WINDOW_ACCESS client-side.
 * These join SIG_UNIFORM_DELAY_SHAPE which is already derived server-side
 * from behaviorFeatures (interArrivalCv).
 */
export type LatencyObservation = {
    /** True when action completed faster than the configured floor. */
    readonly subhuman: boolean;
    /** Duration in ms from start-of-interaction to completion. */
    readonly durationMs: number;
};
export type LatencyOptions = {
    /**
     * Minimum plausible milliseconds for a deliberate human action on this form.
     * ponytail: host must configure per-form. No single default is correct.
     * Upgrade path: learn per-entity baseline once real traffic exists.
     */
    readonly floorMs: number;
    readonly now?: () => number;
};
/**
 * Measure elapsed time between two marks (e.g. form render → submit).
 * Returns the signal observation the host passes to `evaluate`.
 */
export declare function measureLatency(startMs: number, options: LatencyOptions): LatencyObservation;
export type AccessWindowOptions = {
    /** Hours (0-23) considered normal. Inclusive both ends. */
    readonly normalStart: number;
    readonly normalEnd: number;
    readonly now?: () => number;
};
export type AccessWindowObservation = {
    readonly offWindow: boolean;
    readonly hour: number;
};
/**
 * SIG_OFF_WINDOW_ACCESS: activity outside normal hours for this application.
 * The host defines what "normal" means.
 */
export declare function checkAccessWindow(options: AccessWindowOptions): AccessWindowObservation;
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