/**
 * Shared home-directory resolution with a testing override.
 *
 * Extracted out of per-plugin-store.ts so that both PerPluginStore and the
 * LocalFsBackend in backends.ts can honor the same override without a circular
 * value import (per-plugin-store imports backendFromEnv from backends).
 */
/** Override the home directory used by storage modules. Pass null to reset. */
export declare function setHomeDirForTesting(dir: string | null): void;
export declare function getHomeDir(): string;
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