import type { TuiBackend } from './tui-backend.js';
export declare const GENERATED_TUI_SESSION_SHELL_PATCH: {
    readonly hiddenFromSessionList: true;
    readonly customData: {
        readonly genericNewChatShell: true;
    };
};
export declare function isGeneratedTuiSessionKey(sessionKey: string): boolean;
export declare function deleteGeneratedTuiSessionIfEmpty(client: Pick<TuiBackend, 'getSessionStats' | 'deleteSession'>, sessionKey: string): Promise<boolean>;
export declare function cleanupAbandonedTuiSessions(client: Pick<TuiBackend, 'listSessions' | 'getSessionStats' | 'deleteSession'>, currentSessionKey: string, nowMs?: number): Promise<string[]>;
export declare function hideLegacyEmptyTuiSessions(client: Pick<TuiBackend, 'listSessions' | 'patchSession'>): Promise<string[]>;