feat: Allow unauthenticated access to public configurations (v0.1.1)

- Remove auth requirement from uninstall command for public configs
- Bump version to 0.1.1
- Update README with "No Login Required" section
- Update CHANGELOG for 0.1.1 release

search, install, and uninstall now work without login for public configs.

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

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Release v0.1.0