Notes are free-form entries on a candidate's profile — candidate notes, logged emails, system activity, interview feedback, and other entries that appear in the candidate activity feed. Each note is anchored to a candidate and optionally to a specific application. This endpoint returns every note type, including read-only entries (interview notes, scorecard-linked feedback, LinkedIn messages, touchpoints) that cannot be created through POST /v3/notes. For interview feedback and scorecard takeaways, use the Scorecards endpoints instead — they expose the structured form data, while this endpoint only exposes the underlying note body.