feat: several models for the assistant, each with its own name, kind, address and key; a model menu in the chat when there are several (or always, from Аккаунт › Вид), the choice kept for the user

internal/server/handlers_panel.go

@@ -443,7 +443,7 @@ func (s *Server) handleSettings(w http.ResponseWriter, r *http.Request) {
 		"InstallCurl":   fmt.Sprintf("curl -fsSL %s/install.sh | sudo HOST=%s ENROLL_SECRET=%s sh", host, host, secret),
 		"InstallWget":   fmt.Sprintf("wget -qO- %s/install.sh | sudo HOST=%s ENROLL_SECRET=%s sh", host, host, secret),
 		"ServerVersion": Version,
-		"AI":            s.aiConfig(),
+		"AIModels":      s.aiModels(),
 		"Search":        s.searchConf(),
 		"DBNow":         dbNow,
 		"DBChosen":      dbChosen,