Returns all notes for a contact, ordered by creation time descending.
The {contactIdentifier} path parameter supports a contact ID, a phone number in E.164 format starting with +, or a Meta username without the leading @. Ambiguous numeric values are resolved as Meta usernames first and fall back to contact IDs only when no matching Meta username exists.
Contact retrieve, list, and search responses do not include notes; use this endpoint to read contact notes.