docs(ui): add open source documentation files

CONTRIBUTING.md

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+# Contributing to CV
+
+Thank you for your interest in contributing!
+
+## Quick Start
+
+1. Fork the repository
+2. Create your feature branch (`git checkout -b feature/amazing-feature`)
+3. Make your changes
+4. Run linting (`npm run lint`)
+5. Commit your changes (`git commit -m 'Add amazing feature'`)
+6. Push to the branch (`git push origin feature/amazing-feature`)
+7. Open a Pull Request
+
+## Development Guidelines
+
+### Code Style
+
+- Follow the existing code style
+- Run `npm run lint` before committing
+- Use meaningful commit messages
+
+### Component Structure
+
+```jsx
+// Imports at top
+import { motion } from 'framer-motion';
+import { Icon } from 'lucide-react';
+
+// Component definition
+export default function Component() {
+  return (
+    // JSX
+  );
+}
+```
+
+### Testing Your Changes
+
+```bash
+# Start dev server
+npm run dev
+
+# Build for production
+npm run build
+
+# Preview production build
+npm run preview
+```
+
+## Pull Request Checklist
+
+- [ ] Code follows the existing style
+- [ ] Linting passes (`npm run lint`)
+- [ ] Build succeeds (`npm run build`)
+- [ ] Changes are documented in PR description
+
+## Questions?
+
+Feel free to open an issue for any questions or discussions.