docs(skill): add 小宇宙播客 (Xiaoyuzhou) section to SKILL.md (#158)
The XiaoyuzhouChannel (groq-whisper + ffmpeg transcription) was
implemented in the codebase but missing from SKILL.md entirely,
causing agents to not know it existed.
Changes:
- Add Xiaoyuzhou to platform count (15 → 16) in description
- Add trigger keywords: 小宇宙, xiaoyuzhou, 播客, podcast, 转录, transcribe
- Add ## 小宇宙播客 / Xiaoyuzhou Podcast usage section with
transcribe.sh invocation, prerequisites, and setup instructions
Closes #156
Co-authored-by: 小白 Bot <bot@agent-reach.dev>
383004e06a