Using http://guido.io/zarr.js/ to load data from a zarr file. with NO grouping (can't use the xarray zarr file used by xpublish).
Using code added to https://gitlab.com/openmicroscopy/incubator/omero-napari/-/merge_requests/1 to generate a zarr file (works with 3-channel z-stack).
$ omero napari to_zarr Image:52