Function validateDateInput

src/utils/dateUtils.ts:504–515

(dateValue: string)

 * Enhanced date validation that accepts both date-only and timezone-aware formats
 */
export function validateDateInput(dateValue: string): boolean {
	if (!dateValue || dateValue.trim() === "") {
		return true; // Empty is valid (optional field)
	}

	try {
		parseDateToLocalInternal(dateValue);
		return true;
	} catch {
		return false;
	}
}

/**
 * Add days to a date string, returning a date string