import type { AdvisorDefinition, AdvisoryBudget } from '../types/advisory/index.js';
/**
 * Refuse a budget the runtime cannot honour.
 *
 * A cost cap is enforced against real spend, and real spend needs a price.
 * Without one every call costs zero, so the cap never trips — the host sets
 * a limit, sees no error, and learns it was decoration only from the bill.
 * Refusing at construction is the same trade the runtime makes elsewhere:
 * a configuration that cannot do what it says is an error, not a default.
 */
export declare function assertBudgetEnforceable(config: {
    readonly advisors: readonly AdvisorDefinition[];
    readonly budget?: AdvisoryBudget | undefined;
}): void;
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