Enhance client edit command with profile support and UI improvements

- Add profile support to client edit and ls commands
- Implement mixed selection UI allowing both profiles and servers
- Replace color coding with emoji icons (📦 for profiles, 🔧 for servers)
- Add conflict detection to prevent duplicate servers across profiles
- Implement retry loop for better UX when conflicts occur
- Show blank instead of "No description" for servers without descriptions
- Display actual server names in profile descriptions
- Update tests to reflect new table structure with profiles column

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

Co-Authored-By: Claude <[email protected]>

Author: niechen