/** Display only scalar values; an object is not a verified textual value. */
export function displayValue(value: unknown, fallback = ''): string {
    if (typeof value === 'string') return value;
    if (typeof value === 'number' && Number.isFinite(value))
        return String(value);
    if (typeof value === 'boolean') return String(value);
    return fallback;
}