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/tw_costume_and_sound_inputs.js

@@ -0,0 +1,57 @@
+const {test} = require('tap');
+const Runtime = require('../../src/engine/runtime');
+const BlockType = require('../../src/extension-support/block-type');
+const ArgumentType = require('../../src/extension-support/argument-type');
+
+const extension = {
+    id: 'costumesoundtest',
+    name: 'Costume & Sound',
+    blocks: [
+        {
+            blockType: BlockType.COMMAND,
+            opcode: 'costume',
+            text: 'costume [a] [b]',
+            arguments: {
+                a: {
+                    type: ArgumentType.COSTUME
+                },
+                b: {
+                    type: ArgumentType.COSTUME,
+                    defaultValue: 'default costume'
+                }
+            }
+        },
+        {
+            blockType: BlockType.COMMAND,
+            opcode: 'sound',
+            text: 'sound [a] [b]',
+            arguments: {
+                a: {
+                    type: ArgumentType.SOUND
+                },
+                b: {
+                    type: ArgumentType.SOUND,
+                    defaultValue: 'default sound'
+                }
+            }
+        }
+    ]
+};
+
+test('COSTUME and SOUND inputs generate correct scratch-blocks XML', t => {
+    const rt = new Runtime();
+    rt.on('EXTENSION_ADDED', info => {
+        /* eslint-disable max-len */
+        t.equal(
+            info.blocks[0].xml,
+            '<block type="costumesoundtest_costume"><value name="a"><shadow type="looks_costume"></shadow></value><value name="b"><shadow type="looks_costume"><field name="COSTUME">default costume</field></shadow></value></block>'
+        );
+        t.equal(
+            info.blocks[1].xml,
+            '<block type="costumesoundtest_sound"><value name="a"><shadow type="sound_sounds_menu"></shadow></value><value name="b"><shadow type="sound_sounds_menu"><field name="SOUND_MENU">default sound</field></shadow></value></block>'
+        );
+        /* eslint-enable max-len */
+        t.end();
+    });
+    rt._registerExtensionPrimitives(extension);
+});