新增示例库逻辑

docs/en/development/contributing.md

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+# Contributing
+
+Thank you for your interest in contributing to Pixelle-Video!
+
+---
+
+## How to Contribute
+
+1. Fork the repository
+2. Create a feature branch (`git checkout -b feature/AmazingFeature`)
+3. Commit your changes (`git commit -m 'Add some AmazingFeature'`)
+4. Push to the branch (`git push origin feature/AmazingFeature`)
+5. Open a Pull Request
+
+---
+
+## Development Setup
+
+```bash
+# Clone your fork
+git clone https://github.com/your-username/Pixelle-Video.git
+cd Pixelle-Video
+
+# Install development dependencies
+uv sync
+
+# Run tests
+pytest
+```
+
+---
+
+## Code Standards
+
+- All code and comments in English
+- Follow PEP 8 standards
+- Add appropriate tests
+
+---
+
+## Submit Issues
+
+Having problems or feature suggestions? Please submit at [GitHub Issues](https://github.com/PixelleLab/Pixelle-Video/issues).
+
+---
+
+## Code of Conduct
+
+Please be friendly and respectful. We are committed to fostering an inclusive community environment.
+