import type { ClientId } from '@zhixuan92/multi-model-agent-core';
import type { DeclaredClientRoster } from '../provisioning/roster.js';
/**
 * Merge `{ [id]: state }` for every `targets` into `configPath`'s `clients` map,
 * preserving every other key untouched, and creating the file if it is absent.
 *
 * Everything outside `clients` is left exactly as found — this rewrites one key,
 * not the file. A config that is present but not a JSON object is an error
 * rather than something to overwrite: it is the user's file, and replacing it
 * would destroy settings we did not author.
 */
export declare function persistDeclaredState(configPath: string, targets: readonly ClientId[], state: 'on' | 'off'): void;
/** The roster currently recorded at `configPath`, or `undefined` when there is
 *  nothing readable there. Never throws: a roster we cannot parse is not
 *  evidence about what the user wants. */
export declare function readDeclaredState(configPath: string): DeclaredClientRoster | undefined;
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