notes(asr): LLM 顺手出会议标题，覆盖默认时间戳 title

prompt 加要求：第一行 `TITLE: <主题>` + `---` + 正文；backend parse
头两行，覆盖 recordings.title；summary 字段不含 title 行。
失败 fallback 不动 title。前端 sidebar/主视图自带 5s 轮询自动刷新。

apps/notes/src/main.rs

@@ -427,8 +427,8 @@ async fn process_recording(s: AppState, id: i64) {
         );
     }
 
-    // LLM：生成会议纪要
+    // LLM：生成会议纪要 + 标题
-    let summary = match call_llm_summary(&s, &transcript).await {
+    let raw = match call_llm_summary(&s, &transcript).await {
         Ok(t) => t,
         Err(e) => {
             tracing::error!(%id, error = %e, "LLM failed");
@@ -436,14 +436,50 @@ async fn process_recording(s: AppState, id: i64) {
             return;
         }
     };
+    let (new_title, summary_body) = parse_title_from_summary(&raw);
     {
         let conn = s.db.lock().unwrap();
-        let _ = conn.execute(
+        if let Some(t) = new_title.as_deref() {
-            "UPDATE recordings SET summary = ?1, status = 'done', error = NULL WHERE id = ?2",
+            let _ = conn.execute(
-            params![&summary, id],
+                "UPDATE recordings SET title = ?1, summary = ?2, status = 'done', error = NULL WHERE id = ?3",
-        );
+                params![t, &summary_body, id],
+            );
+        } else {
+            let _ = conn.execute(
+                "UPDATE recordings SET summary = ?1, status = 'done', error = NULL WHERE id = ?2",
+                params![&summary_body, id],
+            );
+        }
     }
-    tracing::info!(%id, "done");
+    tracing::info!(%id, title = ?new_title, "done");
+}
+
+/// 从 LLM 输出剥离 `TITLE: ...\n---\n` 头部。
+/// 返回 (Option<title>, summary_body)，title 失败时返回 None + 原文。
+fn parse_title_from_summary(raw: &str) -> (Option<String>, String) {
+    let mut lines = raw.lines();
+    let first = lines.next().unwrap_or("").trim();
+    let Some(rest) = first
+        .strip_prefix("TITLE:")
+        .or_else(|| first.strip_prefix("Title:"))
+        .or_else(|| first.strip_prefix("标题:"))
+        .or_else(|| first.strip_prefix("标题："))
+    else {
+        return (None, raw.to_string());
+    };
+    let title: String = rest.trim().chars().take(80).collect();
+    if title.is_empty() {
+        return (None, raw.to_string());
+    }
+    // 吃掉接下来的 `---` separator + 空行
+    let body: String = lines
+        .skip_while(|l| {
+            let t = l.trim();
+            t.is_empty() || t == "---" || t.starts_with("---")
+        })
+        .collect::<Vec<_>>()
+        .join("\n");
+    (Some(title), body)
 }
 
 fn set_status(s: &AppState, id: i64, status: &str, transcript: Option<&str>, error: Option<&str>) {
@@ -501,8 +537,11 @@ async fn call_llm_summary(s: &AppState, transcript: &str) -> Result<String, Stri
         "model": s.llm_model,
         "messages": [
             { "role": "system", "content":
-                "你是一个会议纪要助手。根据语音转写整理一份结构化纪要（markdown 格式）：\n\
+                "你是一个会议纪要助手。根据语音转写输出：\n\
                  \n\
+                 第一行：`TITLE: <8-20 字符的会议主题>`（不含日期/时间，提取核心议题）\n\
+                 第二行：`---`\n\
+                 之后是 markdown 纪要：\n\
                  1. **概要**：1-2 句话总结\n\
                  2. **关键讨论点**：bullet 列出\n\
                  3. **决定 / 结论**\n\