Add comprehensive repository infrastructure and utilities

New Features:
- GitHub CI/CD pipeline with automated testing and ISO builds
- Issue and PR templates for better collaboration
- Comprehensive contributing guidelines
- Automated backup and update scripts
- System health monitoring and reporting
- Complete test suite for all components
- Quick setup script for rapid deployment

Infrastructure:
- .gitignore with security-focused rules
- requirements.txt for Python dependencies
- PROJECT_STATUS.md tracking development progress
- Scripts README with detailed usage instructions

Utilities Added:
- scripts/quick-setup.sh: One-command secure system setup
- scripts/health-check.sh: Comprehensive health monitoring
- scripts/test-suite.sh: Automated testing for all components
- scripts/backup.sh: Configuration and data backup
- scripts/update.sh: Automated update process

GitHub Integration:
- CI/CD workflow with security scanning
- Automated ISO building on releases
- Issue templates for bugs and features
- Pull request template with checklist
- Code quality checks (pylint, black, shellcheck)

Documentation:
- CONTRIBUTING.md with development guidelines
- PROJECT_STATUS.md with progress tracking
- Enhanced scripts documentation
- Security reporting guidelines

All scripts are executable and production-ready.
Status: Repository fully set up and ready for community collaboration!

Author: SecureOS Team

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug Report
+about: Report a bug or issue with SecureOS
+title: '[BUG] '
+labels: bug
+assignees: ''
+---
+
+## Bug Description
+A clear and concise description of the bug.
+
+## Environment
+- **SecureOS Version**: [e.g., 5.0.0]
+- **Component**: [e.g., AI Engine, Blockchain, PQC, Self-Healing, Sandbox]
+- **OS**: [e.g., Ubuntu 24.04 LTS]
+- **Installation Method**: [e.g., Quick setup, v5.0.0 installer, Manual]
+
+## Steps to Reproduce
+1. Go to '...'
+2. Run command '...'
+3. See error
+
+## Expected Behavior
+What you expected to happen.
+
+## Actual Behavior
+What actually happened.
+
+## Error Messages/Logs
+```
+Paste relevant error messages or logs here
+```
+
+## Screenshots
+If applicable, add screenshots to help explain the problem.
+
+## Additional Context
+Add any other context about the problem here.
+
+## Possible Fix
+If you have ideas on how to fix this, please share.
+
+## Checklist
+- [ ] I have searched existing issues
+- [ ] I have included all required information
+- [ ] I have tested with the latest version
+- [ ] This is not a security vulnerability (report those to security@secureos.xyz)

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature Request
+about: Suggest a new feature for SecureOS
+title: '[FEATURE] '
+labels: enhancement
+assignees: ''
+---
+
+## Feature Description
+A clear and concise description of the feature you'd like to see.
+
+## Problem Statement
+What problem does this feature solve? Is this related to a limitation?
+
+## Proposed Solution
+Describe your proposed solution in detail.
+
+## Alternative Solutions
+Have you considered any alternative approaches?
+
+## Component
+Which component would this affect?
+- [ ] AI Threat Detection
+- [ ] Blockchain Audit
+- [ ] Quantum Cryptography
+- [ ] Self-Healing
+- [ ] Malware Sandbox
+- [ ] Core System
+- [ ] Documentation
+- [ ] Other (specify below)
+
+## Use Case
+Describe how you would use this feature.
+
+## Benefits
+What are the benefits of implementing this feature?
+
+## Implementation Complexity
+- [ ] Low - Minor addition
+- [ ] Medium - Moderate changes required
+- [ ] High - Significant development effort
+- [ ] Unknown
+
+## Security Considerations
+Are there any security implications of this feature?
+
+## Additional Context
+Add any other context, mockups, or examples.
+
+## Checklist
+- [ ] I have searched existing feature requests
+- [ ] This aligns with SecureOS goals
+- [ ] I can help implement this feature

.github/PULL_REQUEST_TEMPLATE.md

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+# Pull Request
+
+## Description
+Brief description of the changes in this PR.
+
+## Related Issue
+Fixes #(issue number)
+
+## Type of Change
+- [ ] Bug fix (non-breaking change which fixes an issue)
+- [ ] New feature (non-breaking change which adds functionality)
+- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
+- [ ] Documentation update
+- [ ] Performance improvement
+- [ ] Code refactoring
+- [ ] Security patch
+
+## Component(s) Affected
+- [ ] AI Threat Detection
+- [ ] Blockchain Audit
+- [ ] Quantum Cryptography
+- [ ] Self-Healing System
+- [ ] Malware Sandbox
+- [ ] Core System
+- [ ] Documentation
+- [ ] Build/CI
+- [ ] Other: __________
+
+## Changes Made
+- Change 1
+- Change 2
+- Change 3
+
+## Testing
+### Test Environment
+- OS: Ubuntu 24.04 LTS
+- Python Version: 3.x
+- Installation Method: [Quick setup / Custom]
+
+### Tests Performed
+- [ ] Unit tests added/updated
+- [ ] Integration tests added/updated
+- [ ] Manual testing completed
+- [ ] Test suite passes (`bash scripts/test-suite.sh`)
+
+### Test Results
+```
+Paste test output here
+```
+
+## Security
+- [ ] No security vulnerabilities introduced
+- [ ] Input validation added where needed
+- [ ] No hardcoded credentials
+- [ ] Dependencies are up-to-date
+- [ ] Security scan passed
+
+## Documentation
+- [ ] README.md updated (if needed)
+- [ ] CHANGELOG.md updated
+- [ ] Code comments added
+- [ ] API documentation updated (if applicable)
+- [ ] User guide updated (if applicable)
+
+## Screenshots/Output
+If applicable, add screenshots or command output.
+
+## Performance Impact
+- [ ] No performance impact
+- [ ] Performance improved
+- [ ] Performance degraded (explain below)
+
+Performance notes:
+
+## Backward Compatibility
+- [ ] Fully backward compatible
+- [ ] Breaking changes (documented in CHANGELOG.md)
+- [ ] Migration guide provided
+
+## Checklist
+- [ ] My code follows the style guidelines
+- [ ] I have performed a self-review
+- [ ] I have commented my code, particularly in hard-to-understand areas
+- [ ] I have made corresponding changes to the documentation
+- [ ] My changes generate no new warnings
+- [ ] I have added tests that prove my fix is effective or that my feature works
+- [ ] New and existing unit tests pass locally
+- [ ] Any dependent changes have been merged and published
+
+## Additional Notes
+Add any additional notes or context here.
+
+## Reviewer Notes
+@reviewers - Please pay special attention to:
+- 
+- 
+
+---
+
+**By submitting this pull request, I confirm that my contribution is made under the terms of the MIT License.**