- Remove personal tap requirement from all READMEs (en/zh/ja)
- Update v3.15.0 release notes to highlight official cask availability
- Add celebration banner noting Homebrew official repository inclusion
- Simplify installation to single command: brew install --cask cc-switch
- Add the Claude Desktop provider guide in English, Chinese, and Japanese.
- Add localized screenshots for import, provider setup, model mapping, and local routing.
- Link the guide from the v3.15.0 release notes and user manual indexes.