Music Generate Skill Generate music using the Volcengine Music Generation API. Supports vocal songs, instrumental BGM, and AI lyrics generation. Trigger Conditions 1. User wants to generate a song (with lyrics or a text prompt) 2. User needs background music, instrumental tracks, or soundtracks 3. User wants AI-generated lyrics 4. User mentions "write a song", "music generation", "BGM", "background music", "lyrics" Environment Variables Two authentication methods are supported (gateway takes priority): Option 1: API Gateway (recommended) - — API gateway base URL - — API gateway authentication…