import type { AgentService } from '../agent/service.js';
import type { SessionIndex } from '../session/index.js';
export type SessionResetDeps = {
    sessionIndex: SessionIndex;
    getAgentService: () => AgentService;
};
export type SessionResetResult = {
    ok: true;
    sessionId: string;
    previousSessionId?: string;
} | {
    ok: false;
    error: string;
};
/**
 * Reset a session in place: archive the current transcript, assign a new
 * `sessionId`, keep the session key and persisted overrides (model/thinking in
 * SQLite `session_config`, thinking/verbose on the session row).
 */
export declare function performSessionReset(sessionKey: string, deps: SessionResetDeps): Promise<SessionResetResult>;