export declare const TOKEN_FILE_MODE = 384;
export declare const TOKEN_FILE_DIR_MODE = 448;
/**
 * Compute the path to the token file. Uses `os.homedir()` so tests can stub
 * `HOME` rather than the path being hardcoded.
 */
export declare function tokenFilePath(home?: string): string;
export interface ReadTokenFileDeps {
    log?: (line: string) => void;
    home?: string;
}
/**
 * Read the token file. Returns null if the file is missing, empty, or has
 * a mode wider than 0600. Never throws.
 */
export declare function readTokenFile(deps?: ReadTokenFileDeps): Promise<string | null>;
export interface WriteTokenFileDeps {
    home?: string;
}
/**
 * Write the token to `~/.config/agentlint/token` with mode 0600. Creates
 * the parent directory if necessary. Overwrites any existing file.
 */
export declare function writeTokenFile(token: string, deps?: WriteTokenFileDeps): Promise<void>;
/**
 * Delete the token file. Idempotent — missing file is not an error.
 */
export declare function unlinkTokenFile(deps?: WriteTokenFileDeps): Promise<boolean>;
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