public with sharing class ContactTableController {
    @AuraEnabled(cacheable=true)
    public static List<Contact> getContacts(Id parentId) {
        if (parentId == null) {
            return new List<Contact>();
        }
        // For demo: assume parent is Account. You can extend to support other parents if needed.
        List<Contact> records = [
            SELECT Id, Name, Title, Phone, Email, AccountId
            FROM Contact
            WHERE AccountId = :parentId
            ORDER BY LastName, FirstName
            LIMIT 5000
        ];

        // Enforce field-level and object-level security
        // Remove fields the running user doesn't have access to
        SObjectAccessDecision decision = Security.stripInaccessible(AccessType.READABLE, records);
        return (List<Contact>) decision.getRecords();
    }
}