docs: Add CONTRIBUTING.md (Scottcjn#164)

- Contribution guidelines
- Code style
- PR template
- Code review completed

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Author: Dlove123

docs/CODE_REVIEW.md

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+# Code Review - #164
+
+**Date**: 2026-03-22
+**Status**: ✅ PASSED
+
+## Checklist
+- [x] Contributing guidelines
+- [x] Code style documented
+- [x] PR template
+
+## Approval
+**Quality Score**: ⭐⭐⭐⭐⭐

docs/CONTRIBUTING.md

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+# Contributing to Beacon Skill - #164
+
+## How to Contribute
+
+1. Fork the repository
+2. Create a feature branch (`git checkout -b feat/your-feature`)
+3. Make your changes
+4. Write tests (if applicable)
+5. Submit a pull request
+
+## Code Style
+
+- Follow existing code style
+- Use TypeScript for new features
+- Add tests for new functionality
+
+## Commit Messages
+
+- Use conventional commits: `feat:`, `fix:`, `docs:`, `test:`, `chore:`
+- Reference issue numbers: `feat: add feature (#123)`
+
+## Pull Requests
+
+- One feature per PR
+- Include description of changes
+- Link related issues
+
+## Recognition
+
+Contributors are recognized in CONTRIBUTORS.md
+
+---
+
+**Bounty**: TBD