fix(go): repair migration wire contracts and runtime lifecycle; document incomplete port

internal/gameserver/teleport.go

@@ -133,7 +133,7 @@ func (s *Server) handleReportPreTeleportFinish(sess *Session, pkt *protocol.RpcP
 	if opt != nil {
 		dest := opt.Position
 		if dest.X != 0 || dest.Y != 0 || dest.Z != 0 {
-			_ = sess.Teleport(dest.X, dest.Y, dest.Z, opt.Facing)
+			_ = sess.teleport(dest.X, dest.Y, dest.Z, opt.Facing)
 		}
 	}
 	return nil