- Update docs/vcr-testing.md with new PII sanitization features
- Document transport_helpers.inject_transport() for simpler test setup
- Add sanitize_cassettes.py script documentation
- Update file structure to include all new components
- Fix PEP 8: Move copy import to top of openai_compatible.py
- Enhance security notes about automatic sanitization
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Co-Authored-By: Claude <noreply@anthropic.com>