The entry points management technically falls under GUI as well

scripts/GUI/entrypoints/icons.js

@@ -0,0 +1,15 @@
+import BrowserIcon from '/scripts/GUI/extensionIcon.js';
+import Image from '/scripts/mapping/image.js';
+
+class IconIndicator {
+     static async enable() {
+          // WIP. Make sure to determine if the product is bad / good
+          BrowserIcon.set(await Image.get('default'));
+     }
+
+     static async disable() {
+          BrowserIcon.set(await Image.get('disabled'));
+     }
+}
+
+export {IconIndicator as default};

scripts/GUI/entrypoints/manager.js

@@ -0,0 +1,50 @@
+// Manage all entries. 
+
+import {read} from '../../secretariat.js';
+import Tabs from "/scripts/GUI/tabs.js";
+import MenuEntry from "./menu.js";
+import ManagedSidebar from "./sidebar.js";
+import IconIndicator from "./icons.js";
+import check from "/scripts/external/check.js";
+
+export default class EntryManager {
+     constructor () {
+          this.instances = {};
+          this.instances.menu = new MenuEntry();
+          Tabs.addActionListener(`onActivated`, (data) => {this.onRefresh()});
+     }
+
+     async onRefresh() {
+          const DATA = await Tabs.query(null, 0)
+
+          if (DATA.url) {
+               (!!await check.platform(DATA.url))
+                    ? (this.enable())
+                    : (this.disable())
+          };
+     }
+
+     /* 
+     Enable the entries. 
+     */
+     enable () {
+          this.instances.menu.enable();
+          IconIndicator.enable();
+
+          // Open the side panel, if supported. 
+		read([`settings`,`behavior`,`autoOpen`]).then((result) => {
+			result = (result == null) ? false : result;
+			if (result) {
+				new ManagedSidebar();
+			}
+		});
+     }
+
+     /* 
+     Disable the entries and the existing opened side panel. 
+     */
+     disable () {
+          this.instances.menu.disable();
+          IconIndicator.disable();
+     }
+}

scripts/GUI/entrypoints/menu.js

@@ -0,0 +1,27 @@
+import Menu from '/scripts/GUI/menus.js';
+import texts from "/scripts/mapping/read.js";
+import ManagedSidebar from "./sidebar.js";
+
+export default class MenuEntry {
+     /* Create all entries. */
+	constructor() {
+		// Add the context menu.
+		this.menu = new Menu({title: (new texts(`entry_contextMenu`)).localized, contexts: [`all`], event: {"onClicked": MenuEntry.onclick}, hidden: true});
+	};
+
+     /* 
+	Enable the sidebar. 
+	*/
+	enable () {
+		this.menu.show();
+	}
+
+	/* Disable. */
+	disable () {
+		this.menu.remove();
+	}
+
+	static onclick() {
+		new ManagedSidebar();
+	};
+}

scripts/GUI/entrypoints/sidebar.js

@@ -0,0 +1,8 @@
+import Sidebar from '/scripts/GUI/sidepanel.js'
+
+export default class ManagedSidebar {
+     constructor () {
+          // WIP
+          new Sidebar(`/pages/popup.htm`);
+     }
+}