[Userscript Incomplete] When reviewing a category, change title to the course name

Community-Created Courses How To's
1

When reviewing a category, I want to change the title from ‘Russian’ (category) to the course name from which the current word comes from. I thought of using the unofficial API but it doesn’t work anymore.

GET http://www.memrise.com/api/course/get/?course_id=12350

For now, I have to enter the names manually (map id to name):

    // ==UserScript==
    // @name         Memrise - Course Names
    // @namespace    http://tampermonkey.net/
    // @match        https://app.memrise.com/garden/review/russian/
    // @match        https://www.memrise.com/course/*/garden/*
    // @match        https://app.memrise.com/course/*
    // ==/UserScript==

    let map = {
        173195: 'Top 10,000 Words Part 1',
        337724: 'Top 10,000 Words Part 2',
        872951: 'Duolingo Russian',
        5765137: 'Russian Random Vocabulary'
    };

    $(document).ready(function() {

        MEMRISE.garden._events.started.push(() => {
            if(MEMRISE.garden.session.course !== undefined && map[course_id()] === undefined){
                //Log name and id to add it to the map
                console.warn(MEMRISE.garden.session.course_id + ': \'' + MEMRISE.garden.session.course.name + '\'');
            }
        })

        MEMRISE.garden._events.activate.push(() => {
            if(MEMRISE.garden.session.course === undefined){
                //If .course is undefined, that means we are in a category
                title(course_name());
            }
        })
    })

    function title(str){
         MEMRISE.garden.$sessionTitle.text(str);
    }

    function course_id(){
        return MEMRISE.garden.session_data.learnables_to_courses[MEMRISE.garden.box.learnable.learnable_id];
    }

    function course_name(){
        return map[course_id()] || 'Russian';
    }

I only found how to get the id of the course, but I didn’t find where the map from id to “course data” is.