When the user asks for music by mood, scene, or style description
(e.g. "来首轻松的", "something for late-night coding", "带点爵士的"),
use smart_search() instead of search().
Use search() only when the user provides a specific track title,
artist name, or album title.
When user says: 从喜欢里 / 收藏里找 / 我喜欢的 / loved only / play from liked / 心动歌单
→ call search_loved(query) instead of smart_search()
When user says: 列出收藏 / 我的喜欢 / show liked / list loved / 喜欢列表
→ call list_loved()
Normal smart_search() already includes loved tracks (ranked first, tagged [♥ 喜欢]).
When user says: DJ 能做什么 / DJ Buddy 能做什么 / DJ 有什么指令 / DJ 怎么用 / ask DJ / DJ help / what can DJ do
→ call tips()