fix: update tests for BrainGlobeAtlas API changes after load_atlas_data removal

- Use resolve_atlas() wrapper in test_visualisations so atlas.volume/.labels work
- Use atlas.resolution[0] instead of atlas.voxel_size_um (BrainGlobeAtlas API)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: PolarBean

tests/regression/test_damage_volume_interpolation.py

@@ -102,7 +102,7 @@ def test_damage_volume_persistence(self):
                 frequency_volume=fv,
                 damage_volume=dv,
                 atlas_volume=atlas.annotation,
-                voxel_size_um=atlas.voxel_size_um or 25.0,
+                voxel_size_um=atlas.resolution[0],
             )
 
             self.assertTrue(os.path.exists(damage_nifti_path), f"Damage volume NIfTI should be saved at {damage_nifti_path}")

tests/regression/test_visualisations.py

@@ -8,6 +8,7 @@
 from brainglobe_atlasapi import BrainGlobeAtlas
 
 from PyNutil import read_alignment, seg_to_coords
+from PyNutil.io.atlas_loader import resolve_atlas
 from timing_utils import TimedTestCase
 
 
@@ -46,7 +47,7 @@ def test_generated_visualisations_match_expected(self):
             with open(self.settings_path) as f:
                 settings = json.load(f)
 
-            atlas = BrainGlobeAtlas(settings["atlas_name"])
+            atlas = resolve_atlas(BrainGlobeAtlas(settings["atlas_name"]))
             alignment = read_alignment(settings["alignment_json"])
             result = seg_to_coords(
                 settings["segmentation_folder"],
@@ -67,7 +68,7 @@ def test_generated_visualisations_match_expected(self):
             create_section_visualisations(
                 settings["segmentation_folder"],
                 reg_data.slices,
-                atlas.annotation,
+                atlas.volume,
                 atlas.labels,
                 output_root,
                 adapter=adapter,