Update addon tests, bootstrap runtime, download progress, and worker functionality

- Modified status messages and stage labels in `test_addon.py` for clarity and consistency.
- Added tests to ensure proper host termination and command execution in `test_addon.py`.
- Enhanced `test_bootstrap_runtime.py` with additional tests for installation behavior, including handling of CUDA and MPS devices, and improved error handling for disk space and network checks.
- Updated download progress reporting in `test_download_progress.py` to include download speed and improved message formatting.
- Added new tests in `test_worker.py` for device selection, NPZ file validation, and model downloading behavior with Hugging Face endpoints.
- Bumped version in `uv.lock` to 0.9.30.

src/snapform/properties.py

@@ -35,8 +35,9 @@ class SnapFormSettings(bpy.types.PropertyGroup):
         name="Device",
         description="Inference device used by the external Runtime",
         items=(
-            ("AUTO", "Auto", "Use CUDA when available, otherwise CPU"),
+            ("AUTO", "Auto", "Use CUDA, then MPS, otherwise CPU"),
             ("CUDA", "CUDA", "Require an NVIDIA CUDA device"),
+            ("MPS", "MPS", "Use Apple Metal (MPS)"),
             ("CPU", "CPU", "Run on CPU"),
         ),
         default="AUTO",