**docs(brainy-models): add Code of Conduct and Contributing Guide**

- Added `CODE_OF_CONDUCT.md` to establish community standards for behavior and inclusivity.
- Added `CONTRIBUTING.md` with detailed guidelines for contributing to the `brainy-models-package`:
  - Model quality, testing, and optimization requirements.
  - Development setup instructions, including build and test scripts.
  - Pull request and commit message conventions.
  - Package-specific utility scripts and file structure overview.

**Purpose**: Provide clear contribution and community guidelines to foster collaboration and maintain project quality standards.

brainy-models-package/CONTRIBUTING.md

@@ -0,0 +1,103 @@
+# Contributing to @soulcraft/brainy-models
+
+Thank you for your interest in contributing to the Brainy Models package! This package provides pre-bundled TensorFlow models for the Brainy vector database.
+
+## Overview
+
+The `@soulcraft/brainy-models` package is part of the larger Brainy ecosystem. For general contribution guidelines, please refer to the main [Brainy Contributing Guide](https://github.com/soulcraft-research/brainy/blob/main/CONTRIBUTING.md).
+
+## Package-Specific Guidelines
+
+### Model Contributions
+
+When contributing to the models package, please consider:
+
+- **Model Quality**: Ensure models are properly tested and validated
+- **Model Size**: Be mindful of package size impact (current package is ~25MB)
+- **Compatibility**: Ensure models work with the target TensorFlow.js versions
+- **Documentation**: Update README.md with new model information
+
+### Development Setup
+
+1. Fork and clone the main repository
+2. Navigate to the models package: `cd brainy-models-package`
+3. Install dependencies: `npm install`
+4. Download models: `npm run download-models`
+5. Build the package: `npm run build`
+6. Run tests: `npm test`
+
+### Testing Models
+
+Before submitting changes:
+
+```bash
+# Test model functionality
+npm test
+
+# Test model compression
+npm run compress-models
+
+# Verify package integrity
+npm run pack
+```
+
+### Model Scripts
+
+The package includes several utility scripts:
+
+- `download-models` - Download the Universal Sentence Encoder model
+- `compress-models` - Create optimized model variants
+- `test` - Verify model functionality
+
+### Commit Guidelines
+
+Follow the same commit message conventions as the main Brainy project:
+
+- Use conventional commit format
+- Keep first line under 50 characters
+- Use imperative mood ("Add model" not "Added model")
+- Reference issues where appropriate
+
+### Pull Request Process
+
+1. Ensure your changes don't break existing functionality
+2. Update documentation if you're adding new models or features
+3. Test model loading and embedding generation
+4. Verify package size impact is acceptable
+5. Submit PR to the main Brainy repository
+
+### Model Optimization
+
+When working with models:
+
+- **Float16**: For balanced performance and size
+- **Int8**: For memory-constrained environments
+- **Original**: For maximum accuracy
+
+### File Structure
+
+```
+brainy-models-package/
+├── models/                 # Model files
+├── src/                   # TypeScript source
+├── dist/                  # Compiled output
+├── scripts/               # Utility scripts
+└── test/                  # Test files
+```
+
+## Code of Conduct
+
+This project follows the same [Code of Conduct](CODE_OF_CONDUCT.md) as the main Brainy project.
+
+## Questions and Support
+
+For questions specific to the models package:
+
+- [GitHub Issues](https://github.com/soulcraft-research/brainy/issues) - Use the `brainy-models` label
+- [Main Documentation](https://github.com/soulcraft-research/brainy)
+
+For general Brainy questions, refer to the main repository.
+
+## License
+
+By contributing to this project, you agree that your contributions will be licensed under the MIT License.