import { type SessionTokenBudget, type SessionTokenBudgetStore } from '../../store/budget/index.js';
import type { TurnId } from '../../types/ids/index.js';
import type { TurnBudgetBinding } from '../../types/session/turn.js';
import type { QueryParams } from './index.js';
/** The ledger reference a checkpoint (or a selected resume state) carries. */
export interface SavedBudgetReference {
    readonly binding?: TurnBudgetBinding;
    readonly accountId?: string;
}
/**
 * Resolve one ledger authority before any model request or recovered tool
 * dispatch.
 *
 * The ledger is keyed by `(rootSessionId, rootTurnId)`: a root turn opens its
 * own ledger with its own limit; a child session's turns bind to the key of
 * the root turn that spawned them (they are handed that account); a resumed
 * paused turn reuses its key. A limit that changes between two turns of one
 * session is therefore two ledgers, never a mismatch.
 */
export declare function resolveQueryBudget(params: QueryParams, turnId: TurnId, store: SessionTokenBudgetStore, saved?: SavedBudgetReference): Promise<SessionTokenBudget>;
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