docs: add community health files and README updates

CHANGELOG.md

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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+### Added
+- Future features will be listed here
+
+### Changed
+- Ongoing updates
+
+### Fixed
+- Bug fixes
+
+---
+*[Mukller](https://github.com/Mukller)*

CODE_OF_CONDUCT.md

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+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+We pledge to make participation in our community a harassment-free experience
+for everyone, regardless of age, body size, disability, ethnicity, gender identity,
+level of experience, nationality, personal appearance, race, religion, or sexual identity.
+
+## Our Standards
+
+**Positive behavior includes:**
+- Demonstrating empathy and kindness
+- Respecting differing opinions and experiences
+- Giving and gracefully accepting constructive feedback
+- Focusing on what is best for the community
+
+**Unacceptable behavior includes:**
+- Harassment, trolling, or personal attacks
+- Publishing others' private information without permission
+- Sexualized language or unwelcome advances
+
+## Enforcement
+
+Instances of unacceptable behavior may be reported to community leaders.
+All complaints will be reviewed and investigated promptly and fairly.
+
+## Attribution
+
+Adapted from the [Contributor Covenant](https://www.contributor-covenant.org), version 2.1.
+
+---
+*[Mukller](https://github.com/Mukller)*

CONTRIBUTING.md

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+# Contributing
+
+Thank you for your interest in contributing! We welcome contributions of all kinds.
+
+## How to Contribute
+
+### Reporting Bugs
+- Check existing [issues](../../issues) to avoid duplicates
+- Open a new issue with a clear title, description, and steps to reproduce
+
+### Suggesting Features
+- Open an issue with the `enhancement` label
+
+### Submitting Code
+
+1. **Fork** this repository
+2. **Create a branch**: `git checkout -b feature/your-feature`
+3. **Make your changes** and commit: `git commit -m "feat: description"`
+4. **Push** and open a **Pull Request**
+
+## Guidelines
+
+- Follow existing code style and conventions
+- Keep PRs focused on a single concern
+- Update documentation when changing behavior
+- Be respectful — see [Code of Conduct](CODE_OF_CONDUCT.md)
+
+---
+*[Mukller](https://github.com/Mukller)*

README.md

@@ -389,3 +389,15 @@ example = {"jpg": x,  # this is a tensor -1...1 chw
 ```
 
 where we expect images in -1...1, channel-first format.
+
+
+## Contributing
+
+We welcome contributions! See [CONTRIBUTING.md](CONTRIBUTING.md) for guidelines on
+how to report bugs, suggest features, and submit pull requests.
+
+By participating, you agree to our [Code of Conduct](CODE_OF_CONDUCT.md).
+
+---
+
+*[Mukller](https://github.com/Mukller)*