fix: pin torch trio to 2.6.0 and make read-only test portable

Pin torch/torchvision/torchaudio to the matched 2.6.0 release so macOS and
Windows (which resolve from PyPI) don't float to torchaudio >=2.9, which
removed AudioMetaData and broke pipeline imports. Linux still gets the
+cu124 build via tool.uv.sources.

Also skip test_readonly_directory on Windows and when running as root (where
filesystem permission bits are unreliable/bypassed), and accept the
PermissionError whether it surfaces during backend construction or the write.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: InfantLab

pyproject.toml

@@ -46,16 +46,19 @@ dependencies = [
     "ultralytics>=8.3.0",
     "supervision>=0.16.0",
     # Note: PyTorch with CUDA - Use UV_EXTRA_INDEX_URL=https://download.pytorch.org/whl/cu124 for CUDA builds
-    "torch>=2.0.0",
-    "torchvision>=0.15.0",
+    # Pin the torch trio to a matched, tested release. cu124 build on Linux
+    # (via tool.uv.sources); CPU build from PyPI on macOS/Windows. Newer
+    # torchaudio (>=2.9) removed AudioMetaData, which the pipelines rely on.
+    "torch==2.6.0",
+    "torchvision==0.21.0",
     "timm>=0.9.0",
     # Audio processing - Core packages that should work
     "pyannote.audio>=3.3.2",
     "pyannote.core>=5.0.0",
     "pyannote.database>=5.1.0",
     "pyannote.metrics>=3.2.1",
     "pyannote.pipeline>=3.0.1",
-    "torchaudio>=2.0.0",
+    "torchaudio==2.6.0",
     # Scene detection and video understanding
     "scenedetect[opencv]>=0.6.3",
     "transformers>=4.40.0",

tests/integration/test_batch_storage.py

@@ -5,6 +5,7 @@
 """
 
 import json
+import os
 import tempfile
 from pathlib import Path
 from unittest.mock import mock_open, patch
@@ -283,6 +284,10 @@ def test_save_job_invalid_data(self):
             # Expected for invalid data
             pass
 
+    @pytest.mark.skipif(
+        os.name == "nt" or (hasattr(os, "geteuid") and os.geteuid() == 0),
+        reason="read-only directory enforcement is unreliable on Windows and bypassed by root",
+    )
     def test_readonly_directory(self):
         """Test behavior with read-only directory."""
         # Create storage in temp directory
@@ -293,14 +298,13 @@ def test_readonly_directory(self):
             # Make directory read-only
             readonly_dir.chmod(0o444)
 
-            # Try to create storage backend
-            # This should handle the permission issue gracefully
-            storage = FileStorageBackend(readonly_dir)
-
-            # Basic operations should fail gracefully
+            # Operating on a read-only directory should raise PermissionError,
+            # whether it surfaces while creating the backend's subdirectories or
+            # while writing job metadata.
             job = BatchJob(video_path=Path("test_video.mp4"))
 
             with pytest.raises(PermissionError):
+                storage = FileStorageBackend(readonly_dir)
                 storage.save_job_metadata(job)
 
         finally: