export interface ExtraLabel {
    label: string;
}
/**
 * Sanitize output to prevent terminal escape injection.
 * Strips ANSI escapes, OSC sequences, control characters, and bidi controls.
 */
export declare function sanitize(input: string): string;
/**
 * Parse --extra-cmd argument from process.argv
 * Supports both: --extra-cmd "command" and --extra-cmd="command"
 */
export declare function parseExtraCmdArg(argv?: string[]): string | null;
/**
 * Execute a command and parse JSON output expecting { label: string }
 * Returns null on any error (timeout, parse failure, missing label)
 *
 * SECURITY NOTE: The cmd parameter is sourced exclusively from CLI arguments
 * (--extra-cmd) typed by the user. Since the user controls their own shell,
 * shell injection is not a concern here - it's intentional user input.
 */
export declare function runExtraCmd(cmd: string, timeout?: number): Promise<string | null>;
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