export declare const VERSION_POINTER_SCHEMA_VERSION = 1;
export declare const VERSION_MARKER_FILE = ".agentlink-version.json";
export interface VersionPointer {
    schemaVersion: 1;
    version: string;
    integrity: string;
    entry: string;
    selectedAt: string;
    runtimeManifestUrl: string;
}
export interface VersionMarker {
    schemaVersion: 1;
    version: string;
    integrity: string;
    entry: string;
}
export type AdoptionPhase = 'preparing' | 'prepared' | 'activating' | 'completed' | 'failed';
export interface AdoptionState {
    schemaVersion: 1;
    version: string;
    phase: AdoptionPhase;
    selection: VersionPointer;
    launchSpecPath: string;
    createdAt: string;
    updatedAt: string;
    error?: string;
}
export declare function getVersionsRoot(): string;
export declare function getCurrentVersionPath(): string;
export declare function getLastKnownGoodPath(): string;
export declare function getAdoptionStatePath(): string;
export declare function isPathInside(root: string, candidate: string): boolean;
export declare function integrityPrefix(integrity: string): string;
export declare function getVersionDirectory(version: string, integrity: string): string;
export declare function validateVersionPointer(value: unknown): VersionPointer;
export declare function writeVersionPointer(path: string, pointer: VersionPointer): VersionPointer;
export declare function loadVersionPointer(path: string): VersionPointer;
export declare function loadCurrentVersion(): VersionPointer | null;
export declare function loadLastKnownGood(): VersionPointer | null;
export declare function createVersionPointer(input: {
    version: string;
    integrity: string;
    entry: string;
    runtimeManifestUrl: string;
    selectedAt?: string;
}): VersionPointer;
export declare function validateVersionInstallation(pointer: VersionPointer): VersionMarker;
export declare function writeVersionMarker(versionDirectory: string, marker: VersionMarker): void;
export declare function writeAdoptionState(state: AdoptionState): void;
export declare function loadAdoptionState(): AdoptionState | null;
export declare function isVersionStoreAdopted(): boolean;