Add community interaction files

- CONTRIBUTING.md: Comprehensive contributor guidelines
- CHANGELOG.md: Version history and release notes
- CODE_OF_CONDUCT.md: Community standards and behavior guidelines
- SECURITY.md: Security policy and vulnerability reporting
- GitHub issue templates: Bug reports, features, questions
- Pull request template: Structured PR submissions

Enhances community engagement and project governance.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

CODE_OF_CONDUCT.md

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+# Code of Conduct
+
+## Our Pledge
+
+We pledge to make participation in the SuperClaude community a welcoming experience for everyone, regardless of age, body size, disability, ethnicity, gender identity and expression, level of experience, nationality, personal appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+### Positive Behavior
+- Being respectful and inclusive
+- Providing constructive feedback
+- Focusing on what is best for the community
+- Showing empathy towards other community members
+- Helping newcomers learn and contribute
+
+### Unacceptable Behavior
+- Harassment, trolling, or discriminatory language
+- Personal attacks or political arguments
+- Publishing private information without permission
+- Spam or off-topic content
+- Any conduct that could reasonably be considered inappropriate
+
+## Responsibilities
+
+Project maintainers are responsible for clarifying standards of acceptable behavior and are expected to take appropriate and fair corrective action in response to any instances of unacceptable behavior.
+
+## Scope
+
+This Code of Conduct applies within all project spaces, including:
+- GitHub repository (issues, PRs, discussions)
+- Project documentation
+- Community forums and chat
+- Project events and meetups
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting the project team through GitHub issues. All complaints will be reviewed and investigated and will result in a response that is deemed necessary and appropriate to the circumstances.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant](https://www.contributor-covenant.org/), version 2.0.
+
+---
+
+*SuperClaude v4.0.0 | Building a respectful community*