import type { Settings } from "@opengeni/config";
import { type Database, type LeaseSnapshot } from "@opengeni/db";
import { type EstablishedSandboxSession } from "@opengeni/runtime/sandbox";
import { type ObjectStorage } from "@opengeni/storage";
/** The sole API-direct cold->warming owner path used by Channel A and viewer
 * attach. It never publishes warm until archive identity, hydrated tree, command
 * routing, provider identity, and the selected rematerialization attempt all
 * agree under one lease epoch. */
export declare function establishApiSandboxSpawner(input: {
    db: Database;
    settings: Settings;
    accountId: string;
    workspaceId: string;
    sandboxGroupId: string;
    sessionId: string;
    backend: string;
    environment: Record<string, string>;
    expectedEpoch: number;
    acquiredLease: LeaseSnapshot;
    fallbackEnvelope: Record<string, unknown> | null;
    dataPlaneUrl: string | null;
    objectStorage?: ObjectStorage | null;
}): Promise<{
    established: EstablishedSandboxSession;
    lease: LeaseSnapshot;
}>;