export declare function tokenPath(accountDir: string): string;
/** Store an account's long-lived OAuth token (mode 0600 where the OS supports it). */
export declare function saveToken(accountDir: string, token: string): void;
/** Read an account's stored OAuth token, or null if absent/empty. */
export declare function readToken(accountDir: string): string | null;
/**
 * Extract the OAuth token from `claude setup-token` output. Claude subscription
 * tokens look like `sk-ant-...`; otherwise fall back to the longest
 * credential-shaped token in the output.
 */
export declare function extractToken(output: string): string | null;