Retrieve a single person (contact, candidate, or talent) record by ID, with optional field selection.
Includes description (intake notes / freeform recruiter notes about the person — users often call this "intake notes"; search it via people_index with description3).
This is the reliable way to resolve a known person ID to their name/profile and read their intake notes.
Nested resumes and documents include download_url / download_url_expires_at (short-lived S3 URLs). Prefer those over resumes_download / person_documents_download.