Keep active task transcripts in memory for instant task switching

internal/server/sse.go

@@ -74,6 +74,10 @@ func (s *Server) StreamEvents(w http.ResponseWriter, r *http.Request, params api
 		}
 	}
 
+	_, err := fmt.Fprint(w, "event: ready\ndata: ready\n\n")
+	if err != nil {
+		return
+	}
 	if rc.Flush() != nil {
 		return
 	}