IdleHacking hover popup

Open equipped item popup on hover
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// ==UserScript==
// @name         IdleHacking hover popup
// @namespace    http://tampermonkey.net/
// @version      1.01
// @description  Open equipped item popup on hover
// @match        *://*.idlehacking.com/*
// @match        *://idlehacking.com/*
// @grant        none
// @run-at       document-idle
// ==/UserScript==

(function () {
    'use strict';

    let hoverTimer = null;
    let currentItem = null;
    let started = false;

    function init() {
        if (started) return;

        const panel = document.querySelector('#equipped-software-panel');
        if (!panel) return;

        started = true;
        console.log('[IdleHacking hover popup] init');

        function getItem(target) {
            return target?.closest('#equipped-software-panel .slot-content[data-item-id]');
        }

        function openPopup(item) {
            if (!item) return;
            if (currentItem === item) return;

            currentItem = item;

            item.dispatchEvent(new MouseEvent('mouseenter', {
                bubbles: true,
                cancelable: true,
                view: window
            }));

            item.dispatchEvent(new MouseEvent('mouseover', {
                bubbles: true,
                cancelable: true,
                view: window
            }));

            item.dispatchEvent(new MouseEvent('mousemove', {
                bubbles: true,
                cancelable: true,
                view: window
            }));

            item.dispatchEvent(new MouseEvent('click', {
                bubbles: true,
                cancelable: true,
                view: window
            }));
        }

        function closePopup() {
            if (!currentItem) return;

            document.dispatchEvent(new KeyboardEvent('keydown', {
                key: 'Escape',
                code: 'Escape',
                keyCode: 27,
                which: 27,
                bubbles: true
            }));

            currentItem = null;
        }

        document.addEventListener('mouseover', (e) => {
            const item = getItem(e.target);
            if (!item) return;

            clearTimeout(hoverTimer);
            hoverTimer = setTimeout(() => openPopup(item), 120);
        });

        document.addEventListener('mouseout', (e) => {
            const fromItem = getItem(e.target);
            const toItem = getItem(e.relatedTarget);

            if (fromItem && !toItem) {
                clearTimeout(hoverTimer);
                setTimeout(closePopup, 100);
            }
        });
    }

    init();

    const observer = new MutationObserver(() => {
        init();
    });

    observer.observe(document.documentElement, {
        childList: true,
        subtree: true
    });
})();