export declare const RATE_LIMITS: {
    readonly minIntervalSeconds: number;
    readonly perHour: 3;
    readonly perDay: 10;
    readonly dedupeWindowDays: number;
};
export declare function hashPayload(summary: string, description: string): string;
export type RateLimitResult = {
    ok: true;
} | {
    ok: false;
    reason: string;
    retryAfterSeconds?: number;
};
export declare function checkAndRecord(hash: string, now?: number): RateLimitResult;