/**
 * Shared toggle cooldown — ADR-314 §D1.
 *
 * Self-reported flags (rate-limited, quota-low) have zero server-side
 * verification (ADR-312's Phase 0 constraint carries over unchanged). A
 * cooldown on how often the flag can actually CHANGE state is cheap,
 * purely client-side friction against casual "always on" gaming or a
 * scripted flip-flop loop — it does not stop a determined abuser (that
 * needs the per-identity server-side quota ADR-314 flags as the real fix),
 * but it raises the bar above "one line in a shell script."
 */
export declare const TOGGLE_COOLDOWN_MS: number;
/** True when `lastToggleAt` is within the cooldown window of `now`. */
export declare function cooldownActive(lastToggleAt: string | null, now: Date): boolean;
/** Minutes remaining in the cooldown window — for user-facing messages. */
export declare function cooldownRemainingMin(lastToggleAt: string | null, now: Date): number;
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