/**
 * storage.ts — Manages install preference state in localStorage.
 * Handles dismissal cooldowns so we don't spam users.
 */
/**
 * Records the exact timestamp when the user dismissed the prompt.
 */
export declare function recordDismissal(): void;
/**
 * Records when the app was confirmed installed.
 */
export declare function recordInstalled(): void;
/**
 * Returns true if the user already installed the app.
 */
export declare function hasInstalled(): boolean;
/**
 * Returns true if the user dismissed WITHIN the cooldown window.
 * If cooldownDays have passed, returns false (show the prompt again).
 */
export declare function isDismissedWithinCooldown(cooldownDays: number): boolean;
/**
 * Resets stored state — useful for testing or if a developer calls .reset()
 */
export declare function clearStorage(): void;