chess-vector-engine 0.5.1

Open source chess engine with hybrid vector-based position analysis, advanced tactical search, and NNUE neural network evaluation
Documentation 
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## 📋 Pull Request Summary

<!-- Provide a brief description of the changes in this PR -->

## 🔧 Type of Change

<!-- Mark the relevant option with an "x" -->

- [ ] 🐛 Bug fix (non-breaking change which fixes an issue)
- [ ] ✨ New feature (non-breaking change which adds functionality)
- [ ] 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
- [ ] 📚 Documentation update
- [ ] 🎨 Code style/formatting changes
- [ ] ♻️ Refactoring (no functional changes)
- [ ] ⚡ Performance improvement
- [ ] 🧪 Test changes
- [ ] 🔧 CI/CD changes
- [ ] 🔐 Security fix

## Feature Tier
<!-- Mark the relevant option with an "x" -->
- [ ] Open Source (affects free tier)
- [ ] Premium (affects paid tier)
- [ ] Enterprise (affects enterprise tier)
- [ ] Infrastructure (affects all tiers)

## Changes Made
<!-- List the specific changes made -->
- 
- 
- 

## Testing
<!-- Describe how you tested your changes -->
- [ ] I have run `cargo test` and all tests pass
- [ ] I have run `cargo build` and the project builds successfully
- [ ] I have tested the changes manually
- [ ] I have added new tests for the changes (if applicable)
- [ ] I have run benchmarks to verify performance (if applicable)

## Performance Impact
<!-- If applicable, describe any performance implications -->
- Memory usage: 
- CPU usage: 
- Search speed: 
- Training time: 

## Documentation
- [ ] I have updated the documentation (if applicable)
- [ ] I have updated CLAUDE.md (if applicable)
- [ ] I have updated the README (if applicable)
- [ ] Code changes are self-documenting

## Compatibility
- [ ] Changes are backward compatible
- [ ] Changes maintain UCI protocol compatibility
- [ ] Changes maintain API compatibility
- [ ] Breaking changes are documented

## Checklist
- [ ] My code follows the existing code style
- [ ] I have performed a self-review of my code
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] I have made corresponding changes to the documentation
- [ ] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my feature works
- [ ] New and existing unit tests pass locally with my changes

## Related Issues
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Closes #
Related to #

## Additional Notes
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