style: move imports to top of file to satisfy ruff E402

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: kushalbakshi

tests/unit/test_storage_adapter.py

@@ -2,7 +2,9 @@
 
 import pytest
 
+import datajoint as dj
 from datajoint.errors import DataJointError
+from datajoint.storage import StorageBackend
 from datajoint.storage_adapter import (
     StorageAdapter,
     _adapter_registry,
@@ -105,9 +107,6 @@ def test_default_url_format(self):
         assert self.adapter.get_url({}, "data/file.dat") == "dummy://data/file.dat"
 
 
-from datajoint.storage import StorageBackend
-
-
 class _FakeFS:
     """Minimal fake fsspec filesystem for testing."""
     protocol = "dummy"
@@ -178,9 +177,6 @@ def test_unsupported_protocol_error(self):
             backend._create_filesystem()
 
 
-import datajoint as dj
-
-
 class TestGetStoreSpecPluginDelegation:
     """Tests for plugin protocol handling in Config.get_store_spec()."""