Prepare transfer artifacts from a local instance to a cloud instance

!lamin disconnect

import lamindb as ln
import bionty as bt
import pertdb
import pandas as pd

ln.setup.init(storage="./test-transfer-to-cloud", modules="bionty,pertdb")

→ initialized lamindb: testuser1/test-transfer-to-cloud

artifact = ln.Artifact.from_dataframe(
    pd.DataFrame({"a": [1, 2, 3]}), description="test-transfer-to-cloud"
).save()
features = bt.CellMarker.from_values(
    ["PD1", "CD21"], field=bt.CellMarker.name, organism="human"
).save()
artifact.features._add_schema(ln.Schema(features), slot="var")
organism = bt.Organism.from_source(name="human").save()
artifact.labels.add(organism)
compound = pertdb.Compound(name="compound-test-transfer-to-cloud").save()
artifact.compounds.add(compound)
artifact.describe()

! no run & transform got linked, call `ln.track()` & re-run

→ writing the in-memory object into cache

Artifact:  (0000)
|   description: test-transfer-to-cloud
├── uid: W6IeHl2htyKN97fm0000            run:                 
│   kind: dataset                        otype: DataFrame     
│   hash: tf8xmO4a3_kkB7dxC6ae9g         size: 1.6 KB         
│   branch: main                         space: all           
│   created_at: 2026-02-05 16:21:22 UTC  created_by: testuser1
│   n_observations: 3                                         
├── storage/path: 
│   /home/runner/work/lamindb/lamindb/docs/storage/test-transfer-to-cloud/.lamindb/W6IeHl2htyKN97fm0000.parquet
├── Dataset features
│   └── var (2 bionty.CellMarker)                                                                                  
│       CD21                           num                                                                         
│       PD1                            num                                                                         
└── Labels
    └── .organisms                     bionty.Organism                      human                                  
        .compounds                     pertdb.Compound                      compound-test-transfer-to-cloud        

assert artifact.features.slots["var"].members.count() == 2