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* feat: add Xiaoyuzhou podcast transcription channel - New channel: 小宇宙播客 (xiaoyuzhoufm.com) → full text transcript - Uses Groq Whisper API (free, no credit card needed) - Auto-downloads audio, converts to low-bitrate MP3, splits by 25MB limit - Supports any length podcast with automatic chunking - Script installed to ~/.agent-reach/tools/xiaoyuzhou/transcribe.sh - User just needs: agent-reach configure groq-key gsk_xxxxx - Updated README (CN/EN), install.md, pyproject.toml * docs: clarify Xiaoyuzhou setup — free key, limitations, step-by-step --------- Co-authored-by: Panniantong <panniantong@users.noreply.github.com>