release: v0.2.0 repository hygiene, CI, and docs sync

Stop tracking personal workflow artifacts at repo root, add CI and MIT
license, align README and agent skills with artifacts/ defaults, and
enable Ruff in dev/CI so releases are verifiable without local-only runs.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Co-authored-by: Cursor <cursoragent@cursor.com>

tests/test_config.py

@@ -1,9 +1,11 @@
 """Unit tests for Configuration Manager."""
 
+from pathlib import Path
+
 import pytest
 import yaml
-from pathlib import Path
-from vlm.config import Config, load_config, create_default_config, validate_config
+
+from vlm.config import Config, create_default_config, load_config, validate_config
 
 
 class TestConfig:
@@ -311,8 +313,8 @@ class TestCreateDefaultConfig:
         """Test that create_default_config creates parent directories."""
         config_file = tmp_path / "subdir" / "config.yaml"
         
-        config = create_default_config(config_file)
-        
+        create_default_config(config_file)
+
         assert config_file.exists()
         assert config_file.parent.exists()