/** Engine/contract version this SDK build targets. Must match the installed `zrt` engine. */
export declare const REQUIRED_ENGINE_VERSION = "latest";
/** Resolve the platform target triple used to name the engine asset. */
export declare function detectTarget(platform?: string, arch?: string): string;
/** Platform-specific `zrt` binary filename. */
export declare function engineBinaryName(): string;
/** Root install directory for engine binaries (`ZRT_HOME`, else `~/zrt`). */
export declare function zrtHome(): string;
/** Canonical install path for a given engine version + target. */
export declare function engineInstallPath(version: string, target?: string): string;
/** Resolve a runnable `zrt` engine binary: installed path -> `ZRT_CONSOLE_BIN` -> local build -> CDN download. Throws if none work. */
export declare function resolveEngineBinary(version?: string): Promise<string>;