From eed5e88dc061acf0074fa78bbd1607e594ad85d7 Mon Sep 17 00:00:00 2001
From: Fam Zheng <fam@euphon.net>
Date: Sun, 10 May 2026 14:57:36 +0100
Subject: [PATCH] =?UTF-8?q?music(chat):=20=E5=8E=BB=E6=8E=89=E9=BA=BB?=
 =?UTF-8?q?=E8=96=AF=E4=BA=BA=E6=A0=BC=20prompt=EF=BC=8C=E5=8F=AA=E6=B3=A8?=
 =?UTF-8?q?=E5=85=A5=E6=9B=B2=E7=9B=AE=20context?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 apps/music/frontend/src/views/PlayerView.vue |  2 +-
 apps/music/src/main.rs                       | 15 +++++++--------
 2 files changed, 8 insertions(+), 9 deletions(-)

diff --git a/apps/music/frontend/src/views/PlayerView.vue b/apps/music/frontend/src/views/PlayerView.vue
index 1470fb1..05d92f9 100644
--- a/apps/music/frontend/src/views/PlayerView.vue
+++ b/apps/music/frontend/src/views/PlayerView.vue
@@ -233,7 +233,7 @@
       <!-- 右侧 LLM chat 边栏 -->
       <aside v-if="selected" class="chat">
         <header class="chat-head">
-          <span>麻薯 · {{ selected.title.slice(0, 12) }}</span>
+          <span>Chat · {{ selected.title.slice(0, 16) }}</span>
           <button class="chat-clear" @click="onChatClear" title="清空对话">清空</button>
         </header>
         <div ref="chatBodyEl" class="chat-body">
diff --git a/apps/music/src/main.rs b/apps/music/src/main.rs
index e53dc2f..f7f286d 100644
--- a/apps/music/src/main.rs
+++ b/apps/music/src/main.rs
@@ -799,23 +799,22 @@ fn build_chat_context(
         .optional()?;
     let (title, artist, category, lyrics, notes) = row.ok_or(AppError::NotFound)?;
 
-    let mut sys = String::from(
-        "你是麻薯，一个懂音乐、会乐理、爱聊天的助手。用中文回答，简洁直接，必要时用 markdown。\n\n当前曲目：",
-    );
-    sys.push_str(&format!("《{}》", title));
+    // 仅注入当前曲目上下文，不赋予 LLM 任何角色 / 人格。
+    let mut sys = String::from("Context: 用户正在查看以下曲目。\n");
+    sys.push_str(&format!("Title: {}\n", title));
     if let Some(a) = artist.as_deref().filter(|s| !s.is_empty()) {
-        sys.push_str(&format!(" — {}", a));
+        sys.push_str(&format!("Artist: {}\n", a));
     }
     if let Some(c) = category.as_deref().filter(|s| !s.is_empty()) {
-        sys.push_str(&format!("（{}）", c));
+        sys.push_str(&format!("Category: {}\n", c));
     }
     if let Some(n) = notes.as_deref().filter(|s| !s.is_empty()) {
-        sys.push_str(&format!("\n用户笔记：{}", n));
+        sys.push_str(&format!("User notes: {}\n", n));
     }
     if let Some(l) = lyrics.as_deref().filter(|s| !s.is_empty()) {
         // LRC 太长会爆 prompt，截到 4KB
         let trimmed = if l.len() > 4096 { &l[..4096] } else { l };
-        sys.push_str(&format!("\n歌词（截断到 4KB）：\n{}", trimmed));
+        sys.push_str(&format!("Lyrics (truncated to 4KB):\n{}\n", trimmed));
     }
 
     let mut stmt = conn.prepare(