/**
 * OG tracking code system.
 *
 * Silently writes a unique identifier to ~/.milady/.og on first run.
 * The code is a random UUID. A set of 100 "winning" codes can be
 * generated deterministically from a secret seed (in MiladyMaker scripts).
 * This file is planted now; whitelist eligibility is revealed in a future update.
 */
/**
 * Write a random tracking UUID to ~/.milady/.og if it does not already exist.
 * Called once during startup. Silent on failure.
 */
export declare function initializeOGCode(): void;
/**
 * Read the stored OG code, or null if it doesn't exist.
 */
export declare function readOGCode(): string | null;
/**
 * Generate the set of valid OG codes from a seed.
 * Used in MiladyMaker scripts -- not called in the Milady app.
 */
export declare function generateValidCodes(seed: string, count: number): string[];
/**
 * Check if a given code is in the valid set.
 * Requires the seed to regenerate the valid codes.
 */
export declare function isValidOGCode(code: string, seed: string, count?: number): boolean;
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