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>

SECURITY.md

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+# Security Policy
+
+## Supported Versions
+
+| Version | Supported |
+|---------|-----------|
+| 4.0.x   | ✅ Yes    |
+| < 4.0   | ❌ No     |
+
+## Reporting Security Vulnerabilities
+
+We take security seriously. If you discover a security vulnerability, please follow these steps:
+
+### 🔒 Private Reporting (Preferred)
+
+1. **Do NOT** create a public issue
+2. Email security details to: anton.knoery@gmail.com
+3. Include "SuperClaude Security" in subject line
+4. Provide detailed description of the vulnerability
+
+### 📝 Required Information
+
+Please include:
+- Description of the vulnerability
+- Steps to reproduce the issue
+- Potential impact assessment
+- Any suggested fixes or mitigations
+- Your contact information for follow-up
+
+### ⏱️ Response Timeline
+
+- **24 hours**: Initial acknowledgment
+- **72 hours**: Preliminary assessment
+- **7 days**: Detailed response with next steps
+- **30 days**: Resolution target (depending on complexity)
+
+## Security Considerations
+
+### Configuration Framework Security
+- SuperClaude is a configuration framework, not executable software
+- No network connections or data transmission
+- Files are stored locally in ~/.claude/
+- Shell scripts have limited system access
+
+### Installation Security
+- install.sh performs file operations only
+- No sudo/admin privileges required
+- Backup existing configurations before installation
+- All operations within user home directory
+
+### Usage Security
+- Configuration files are read-only for Claude Code
+- No sensitive data stored in configurations
+- Slash commands execute through Claude Code's security model
+- MCP integrations follow Claude Code's sandbox restrictions
+
+## Best Practices
+
+### For Users
+- Review install.sh before execution
+- Keep SuperClaude updated
+- Report suspicious behavior
+- Use official installation methods only
+
+### For Contributors
+- Follow secure coding practices
+- No hardcoded secrets or credentials
+- Validate all user inputs
+- Test security implications of changes
+
+## Scope
+
+This security policy covers:
+- SuperClaude configuration files
+- Installation scripts
+- GitHub repository security
+- Community interaction security
+
+## Disclaimer
+
+SuperClaude is provided "as is" without warranty. While we strive for security, users are responsible for:
+- Reviewing code before installation
+- Using in appropriate environments
+- Following Claude Code security guidelines
+- Backing up existing configurations
+
+---
+
+**Questions?** Contact anton.knoery@gmail.com
+
+*SuperClaude v4.0.0 | Security-conscious configuration framework*