When the server exits (^C or because docker/systemd exits it), streaming gRPC clients must be

closed. Currently, the server does not exit until the gRPC client disconnects.

cmd/maglevd/main.go

@@ -65,7 +65,7 @@ func run() error {
 		return fmt.Errorf("listen %s: %w", *grpcAddr, err)
 	}
 	srv := grpc.NewServer()
-	grpcapi.RegisterMaglevServer(srv, grpcapi.NewServer(chkr))
+	grpcapi.RegisterMaglevServer(srv, grpcapi.NewServer(ctx, chkr))
 	slog.Info("grpc-listening", "addr", *grpcAddr)
 
 	go func() {