feat: a new chat is named by the model in two or three words, asked aside; the machine's name gets its room in the chat's header

internal/server/ai_test.go

@@ -150,7 +150,8 @@ func TestAIChatNeedsUserOn(t *testing.T) {
 	}
 	// The talk is kept: the question and the answer.
 	cs := s.aiChats(a.ID)
-	if len(cs) != 1 || cs[0].Title != "hi" || w.Header().Get("X-Chat-Id") != strconv.FormatInt(cs[0].ID, 10) {
+	// Named by the question at once (the model may rename it a moment later).
+	if len(cs) != 1 || cs[0].Title == "" || w.Header().Get("X-Chat-Id") != strconv.FormatInt(cs[0].ID, 10) {
 		t.Fatalf("chats: %+v %q", cs, w.Header().Get("X-Chat-Id"))
 	}
 	if h := s.aiHistoryOf(a.ID, cs[0].ID, 10); len(h) != 2 || h[0].Content != "hi" || h[1].Content != "ok" {
@@ -266,3 +267,37 @@ func TestAIThinkingKept(t *testing.T) {
 		t.Fatalf("the model gets the thinking back: %+v", win)
 	}
 }
+
+// A new chat is named by the model: its first question in two or three
+// words, asked aside so the answer does not wait.
+func TestAIChatTitle(t *testing.T) {
+	s, c := newTestServer(t)
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		var in struct {
+			Messages []aiMsg `json:"messages"`
+		}
+		_ = json.NewDecoder(r.Body).Decode(&in)
+		reply := "ok"
+		if strings.Contains(in.Messages[0].Content, "название") {
+			reply = "«Выбор поисковика.»"
+		}
+		b, _ := json.Marshal(reply)
+		fmt.Fprintf(w, "data: {\"choices\":[{\"delta\":{\"content\":%s}}]}\n\ndata: [DONE]\n\n", b)
+	}))
+	defer srv.Close()
+	_ = s.db.SetConfig(cfgAIType, "openai")
+	_ = s.db.SetConfig(cfgAIURL, srv.URL)
+	a, _ := s.db.AdminByUsername("adm")
+	_ = s.db.SetConfig(aiUserKey(a.ID), "1")
+	req := httptest.NewRequest(http.MethodPost, "/api/panel/ai/chat", strings.NewReader(`{"message":"какой поисковик ты используешь сейчас"}`))
+	req.AddCookie(c)
+	w := httptest.NewRecorder()
+	s.Handler().ServeHTTP(w, req)
+	for i := 0; i < 50; i++ {
+		if cs := s.aiChats(a.ID); len(cs) == 1 && cs[0].Title == "Выбор поисковика" {
+			return
+		}
+		time.Sleep(50 * time.Millisecond)
+	}
+	t.Fatalf("title: %+v", s.aiChats(a.ID))
+}