Backend side of the ExternalChatSessionProvider connection.
Invoked by each frontend to inform the backend about session changes so that the backend can push updates to external event stream clients.
Notifies the backend that the sessions of the calling frontend changed in a way visible to the external API (session created/deleted/renamed or session status changed).
Backend side of the ExternalChatSessionProvider connection.
Invoked by each frontend to inform the backend about session changes so that the backend can push updates to external event stream clients.