Release v1.6.0: Add youtube-downloader skill

- Add youtube-downloader v1.0.0
- Update marketplace to v1.6.0
- Comprehensive YouTube video/audio downloading with yt-dlp
- Android client workaround for nsig extraction issues
- Audio-only MP3 conversion
- Format selection and network error handling
- Demo GIF and comprehensive documentation

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

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

README.zh-CN.md

@@ -6,15 +6,15 @@
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 ## 📑 目录