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_cli_state.py

@@ -1,13 +1,11 @@
 """Tests for CLI state commands."""
 
-import json
-import tempfile
 from pathlib import Path
 
 import pytest
 from click.testing import CliRunner
 
-from vlm.cli import main, default_config_path
+from vlm.cli import default_config_path, main
 
 
 @pytest.fixture