/**
 * [WHO]: resultBudget and defaultToolInput for constrained local-model requests
 * [FROM]: No runtime dependencies
 * [TO]: Consumed by the local-model-enhancement entry and regression tests
 * [HERE]: extensions/optional/local-model-enhancement/budget.ts - extension-owned policy
 */
export interface ResultBudget {
    perResultChars: number;
    batchBodyChars: number;
}
/** Character ceilings, not a tokenizer or a hard request-context guarantee. */
export declare function resultBudget(contextWindow?: number): ResultBudget;
/** Explicit limits (including invalid ones) remain subject to ordinary tool validation. */
export declare function defaultToolInput(toolName: string, input: Record<string, unknown>): Record<string, unknown> | undefined;