v1.0.1

[1.0.1] - 2026-08-15

Production audit fixes for release metadata, CI, and fixture loading.

• GitHub Actions concurrency no longer cancels in-progress main runs, so a
  version-bump release cannot be aborted mid-publish.
• Release notes are taken from the changelog section that matches
  [project].version. A missing or empty section fails CI instead of
  publishing notes from an older version.
• PyPI classifier is Production/Stable. README and Action docs describe the
  published package instead of a pre-release tree.
• requirements-dev.txt includes Blinter so it matches pip install -e ".[dev]".
• Fixture load rejects missing or escaping equals_file paths as schema errors.
  File matcher path values cannot be absolute.
• CI and Action docs continue to pin GitHub Actions to version tags, not commit
  SHAs.