Lists events accessible within the given scope. Each event in the response includes primary_event_id and is_co_hosted_mirror. For co-hosted events that appear across multiple organizations, primary_event_id always resolves to the original event ID, allowing you to identify that two events from different scopes represent the same real world event. Each event session also includes primary_session_id for the same purpose. Events with an event page also include image_url and description fields, plus accessibility_info: an optional per-language hash of accessibility details from the event page settings (e.g. {"en": "Wheelchair accessible entrance"}), null when not provided. Values may contain limited inline HTML (p, br, strong, em, a).