export declare const DEFAULT_BUDGET_STATE_PATH: string;
export declare class LLMBudget {
    private opts;
    constructor(opts: {
        dailyUsd: number;
        statePath: string;
    });
    private todayIso;
    private load;
    private save;
    canSpend(estimateUsd: number): boolean;
    record(actualUsd: number): void;
}