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-vm/test/unit/engine_mutation-adapter.js

@@ -0,0 +1,26 @@
+const test = require('tap').test;
+
+const mutationAdapter = require('../../src/engine/mutation-adapter');
+
+test('spec', t => {
+    t.type(mutationAdapter, 'function');
+    t.end();
+});
+
+test('convert DOM to Scratch object', t => {
+    const testStringRaw = '"arbitrary" & \'complicated\' test string';
+    const testStringEscaped = '\\"arbitrary\\" & 'complicated' test string';
+    const xml = `<mutation blockInfo="{&quot;text&quot;:&quot;${testStringEscaped}&quot;}"></mutation>`;
+    const expectedMutation = {
+        tagName: 'mutation',
+        children: [],
+        blockInfo: {
+            text: testStringRaw
+        }
+    };
+
+    // TODO: do we want to test passing a DOM node to `mutationAdapter`? Node.js doesn't have built-in DOM support...
+    const mutationFromString = mutationAdapter(xml);
+    t.deepEqual(mutationFromString, expectedMutation);
+    t.end();
+});