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/button.test.jsx

@@ -0,0 +1,23 @@
+import React from 'react';
+import {shallow} from 'enzyme';
+import ButtonComponent from '../../../src/components/button/button';
+import renderer from 'react-test-renderer';
+
+describe('ButtonComponent', () => {
+    test('matches snapshot', () => {
+        const onClick = jest.fn();
+        const component = renderer.create(
+            <ButtonComponent onClick={onClick} />
+        );
+        expect(component.toJSON()).toMatchSnapshot();
+    });
+
+    test('triggers callback when clicked', () => {
+        const onClick = jest.fn();
+        const componentShallowWrapper = shallow(
+            <ButtonComponent onClick={onClick} />
+        );
+        componentShallowWrapper.simulate('click');
+        expect(onClick).toHaveBeenCalled();
+    });
+});