Automatic duplicate contact detection and merge by email (In People → Contacts)

When importing contacts via CSV (e.g. for bulk audience filtering), duplicate contact records get created instead of matching to existing ones, which forces us to manually find and clean up duplicates after every import. We'd like Intercom to detect contacts with the same email address and either prevent the duplicate from being created or offer a built-in merge tool (manual or automatic) to consolidate them. This would save significant manual cleanup time and keep our contact/company data accurate, especially since duplicate records also affect audience filtering and reporting.