/**
 * `NAMZU_HOME`: the one user-level home the SDK and the CLI share
 * (default `~/.namzu`). Session logs live under `projects/<slug>/` inside it;
 * see `./paths.ts`.
 */
export interface ResolveNamzuHomeOptions {
    /** OS home override for embedding and tests. */
    readonly home?: string;
    /** Environment override for embedding and tests. */
    readonly env?: NodeJS.ProcessEnv;
}
export declare class NamzuHomeError extends Error {
    readonly name = "NamzuHomeError";
}
/**
 * Resolve the user-level Namzu application home without creating it.
 *
 * `NAMZU_HOME` is an explicit operator assertion, so it is validated more
 * strictly than the default: it must already be a real directory and its
 * canonical identity is returned. The default remains creatable on first use.
 */
export declare function resolveNamzuHome(options?: ResolveNamzuHomeOptions): string;
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