Added debug output to troubleshoot why winget installer isn't being used for rubocop.

Shows:
- Primary package manager detected
- Installer object availability
- Package names for each PM (winget, choco, npm, pip)

This will help identify why best_installer is None for rubocop.

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

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