export declare class ExecutionScope {
    readonly executionId: string;
    private readonly ac;
    private readonly cleanups;
    constructor(executionId: string);
    /** The execution's abort signal. Every provider session opened on behalf of
     *  this execution — preprocessing turns included — must receive THIS signal,
     *  never a throwaway `new AbortController().signal`. */
    get signal(): AbortSignal;
    /** Fire the execution's abort channel (cooperative cancellation). */
    abort(reason?: string): void;
    /** Register a release action to run when the execution ends (LIFO). */
    registerCleanup(fn: () => void | Promise<void>): void;
    /** Run all registered cleanups newest-first. Best-effort: a throwing cleanup
     *  never blocks the others. Idempotent — a second drain is a no-op. */
    drain(): Promise<void>;
}
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