feat(go): reuse parsed fields across projections

go/vehicle-gateway/internal/gateway/tcp_server.go

@@ -237,6 +237,9 @@ func (s *TCPServer) handleFrame(ctx context.Context, conn net.Conn, raw []byte,
 	}
 	frameStatus = env.ParseStatus
 	s.recordFrameMetric(env.ParseStatus)
+	if env.ParseStatus != envelope.ParseBadFrame {
+		realtime.EnsureParsedFields(&env)
+	}
 
 	if err := s.sink.PublishRaw(frameCtx, env); err != nil {
 		s.recordPublishMetric("raw", "error")