/** Process-local cache + disk mirror. */
declare class ThreadOwnerStore {
    private map;
    private ensure;
    get(threadId: string): string | undefined;
    /** Claim or refresh ownership. Returns false if owned by someone else. */
    claim(threadId: string, tokenId: string): boolean;
    set(threadId: string, tokenId: string): void;
    delete(threadId: string): void;
    /** Move ownership key when a session rekeys to a new thread id. */
    rekey(oldId: string, newId: string): void;
    /** Test helper — drop cache so next access reloads from disk. */
    _resetForTests(): void;
}
export declare const webThreadOwners: ThreadOwnerStore;
export {};
//# sourceMappingURL=web-thread-owners.d.ts.map