/** Ordered terminal quit cleanup.
 *
 * Pure sequencing: every step rejection is contained and the exit request is
 * always reached exactly once, so a failing flush never strands the process.
 *
 * @module @deepseek-ai/dsh-code/quit
 */
/** One ordered step of the terminal quit cleanup. */
export interface QuitCleanupStep {
    /** Step label used in diagnostics and tests. */
    readonly name: string;
    /** The step's async work; a rejection is contained by the sequence. */
    readonly run: () => Promise<void>;
}
/**
 * Run the ordered quit cleanup, then request exit. Every step rejection is
 * contained (reported through `onError`) so a failed flush or dispose never
 * skips the remaining cleanup; the exit request is always reached exactly
 * once.
 * @param steps - the cleanup steps in dependency order (settle the visible
 * session, await the final in-flight composition, await durable recall).
 * @param exit - the terminal exit request (code 0).
 * @param onError - optional failure sink; called once per failing step and
 * itself contained, so a throwing sink cannot abort the sequence.
 * @returns the names of the steps that started, in order (for tests).
 */
export declare function runQuitSequence(steps: readonly QuitCleanupStep[], exit: (code: number) => void, onError?: (name: string, error: unknown) => void): Promise<readonly string[]>;