/**
 * The construction order, as code (Internal Design, steps 1 to 5).
 *
 * 1. Configuration, once. Everything downstream reads the result, and a rejected configuration
 *    stops the command before an adapter exists or a home is read (FR-56).
 * 2. The platform services: the estimator factory, the repository reader, the committer.
 * 3. The adapters of the list. `capabilities()` is cheap and pure, so it may be read at once.
 * 4. The target profile, built by the caller from the agent the entry point is running in.
 * 5. The pipeline, wired with the services and the adapters.
 *
 * Every step is injectable, because a composition root whose parts cannot be replaced cannot be
 * tested — and because the deps are thunks, not values, "nothing is built before the
 * configuration is loaded" is a property a test can observe rather than a promise.
 */
import { type AgentEntry } from "./agents.js";
import type { AgentRegistry, ConfigLoader, EstimatorFactory, FileCommitter, HostWiring, ImportConfig, ImportPipeline, RepoReader, TargetProfile, TargetProfileBuilder } from "./contract.js";
/** Everything the composition root builds, and what a test may replace. */
export interface HostDeps {
    /** The agent list. Defaults to the one list of the tree (FR-57). */
    agents?: readonly AgentEntry[];
    configLoader?: ConfigLoader;
    createEstimators?: () => EstimatorFactory;
    createRepo?: () => RepoReader;
    createCommitter?: () => FileCommitter;
    /** The directory the command runs in. The repository reader reads git state from it (FR-13). */
    cwd?: string;
    /** The import time written into the marker (FR-47). Injected so a preview and a commit agree. */
    now?: () => string;
}
/**
 * The wiring, plus the two things an entry point needs to reach step 4: the configuration that
 * was loaded once, and the builder that turns an agent and a home into a profile.
 */
export interface Host extends HostWiring {
    registry(): AgentRegistry;
    profiles(): TargetProfileBuilder;
    /** The one configuration of this process (Constraints: loaded once per process). */
    config(): ImportConfig;
    pipelineFor(target: TargetProfile): Promise<ImportPipeline>;
}
export declare function createHost(deps?: HostDeps): Promise<Host>;