Initial commit of 001code-html Scratch frontend project.

Includes scratch-gui, scratch-vm, scratch-blocks, scratch-render, scratch-l10n, and deployment config.

Co-authored-by: Cursor <cursoragent@cursor.com>

scratch-gui/test/unit/components/menu-bar.test.jsx

@@ -0,0 +1,64 @@
+describe('no-op', () => {
+    test('no-op', () => {});
+});
+// tw: these seem to be hopelessly broken to the increasing scope of changes we make to the menu bar, disable for now...
+/*
+import React from 'react';
+import {mountWithIntl} from '../../helpers/intl-helpers';
+import MenuBar from '../../../src/components/menu-bar/menu-bar';
+import {menuInitialState} from '../../../src/reducers/menus';
+import {LoadingState} from '../../../src/reducers/project-state';
+import {DEFAULT_THEME} from '../../../src/lib/themes';
+
+import configureStore from 'redux-mock-store';
+import {Provider} from 'react-redux';
+import VM from 'scratch-vm';
+
+describe('MenuBar Component', () => {
+    const store = configureStore()({
+        locales: {
+            isRtl: false,
+            locale: 'en-US'
+        },
+        scratchGui: {
+            menus: menuInitialState,
+            projectState: {
+                loadingState: LoadingState.NOT_LOADED
+            },
+            theme: {
+                theme: DEFAULT_THEME
+            },
+            timeTravel: {
+                year: 'NOW'
+            },
+            vm: new VM()
+        }
+    });
+
+    const getComponent = function (props = {}) {
+        return <Provider store={store}><MenuBar {...props} /></Provider>;
+    };
+
+    test('menu bar with no About handler has no About button', () => {
+        const menuBar = mountWithIntl(getComponent());
+        const button = menuBar.find('AboutButton');
+        expect(button.exists()).toBe(false);
+    });
+
+    test('menu bar with an About handler has an About button', () => {
+        const onClickAbout = jest.fn();
+        const menuBar = mountWithIntl(getComponent({onClickAbout}));
+        const button = menuBar.find('AboutButton');
+        expect(button.exists()).toBe(true);
+    });
+
+    test('clicking on About button calls the handler', () => {
+        const onClickAbout = jest.fn();
+        const menuBar = mountWithIntl(getComponent({onClickAbout}));
+        const button = menuBar.find('AboutButton');
+        expect(onClickAbout).toHaveBeenCalledTimes(0);
+        button.simulate('click');
+        expect(onClickAbout).toHaveBeenCalledTimes(1);
+    });
+});
+*/