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/fixtures/execute/README.md

@@ -0,0 +1,3 @@
+Tests in this folder are run in scratch by integration/execute.js. The tests can SAY test messages that map to tap methods. Read integration/execute.js for more.
+
+Tests whose names start with `tw-` are added by TurboWarp. Some of these tests are based on real projects from the scratch.mit.edu website, in which case their filename contains the original project ID and additional credits are within the project's scripts. We believe our use of these projects is fair use as the projects have been sufficiently modified and stripped down such that the project found here bears not even a slight resemblance to the original project.

scratch-vm/test/fixtures/execute/tw-generate-comparison-matrix-inline.js

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+const fs = require('fs');
+const Cast = require('../../../src/util/cast');
+
+/*
+This is a command-line tool to generate the tw-comparison-matrix-inline test project.
+
+To use output:
+Blockly.Xml.domToWorkspace(
+    new DOMParser().parseFromString(XML_GOES_HERE, 'text/xml').documentElement,
+    Blockly.getMainWorkspace()
+);
+*/
+
+/* eslint-disable no-console */
+
+const VALUES = [
+    '0',
+    '0.0',
+    '1.23',
+    '.23',
+    '0.123',
+    '-0',
+    '-1',
+    'true',
+    'false',
+    'NaN',
+    'Infinity',
+    'banana',
+    '🎉',
+    ''
+];
+
+const OPERATORS = [
+    {
+        opcode: 'operator_lt',
+        symbol: '<',
+        execute: (a, b) => Cast.compare(a, b) < 0
+    },
+    {
+        opcode: 'operator_equals',
+        symbol: '=',
+        execute: (a, b) => Cast.compare(a, b) === 0
+    },
+    {
+        opcode: 'operator_gt',
+        symbol: '&gt;',
+        execute: (a, b) => Cast.compare(a, b) > 0
+    }
+];
+
+const NEXT = '{{NEXT}}';
+
+let result = `
+<xml>
+    <block type="event_whenflagclicked">
+        <next>
+            <block type="looks_say">
+                <value name="MESSAGE">
+                    <shadow type="text">
+                        <field name="TEXT">plan 0</field>
+                    </shadow>
+                </value>
+                ${NEXT}
+            </block>
+        </next>
+    </block>
+</xml>
+`;
+
+let n = 0;
+for (const i of VALUES) {
+    for (const j of VALUES) {
+        for (const operator of OPERATORS) {
+            n++;
+            result = result.replace(NEXT, `
+            <next>
+                <block type="control_if">
+                    <value name="CONDITION">
+                        <block type="operator_not">
+                            <value name="OPERAND">
+                                <block type="operator_equals">
+                                    <value name="OPERAND1">
+                                        <shadow type="text">
+                                            <field name="TEXT"></field>
+                                        </shadow>
+                                        <block type="${operator.opcode}">
+                                            <value name="OPERAND1">
+                                                <shadow type="text">
+                                                    <field name="TEXT">${i}</field>
+                                                </shadow>
+                                            </value>
+                                            <value name="OPERAND2">
+                                                <shadow type="text">
+                                                    <field name="TEXT">${j}</field>
+                                                </shadow>
+                                            </value>
+                                        </block>
+                                    </value>
+                                    <value name="OPERAND2">
+                                        <shadow type="text">
+                                            <field name="TEXT">${operator.execute(i, j)}</field>
+                                        </shadow>
+                                    </value>
+                                </block>
+                            </value>
+                        </block>
+                    </value>
+                    <statement name="SUBSTACK">
+                        <block type="looks_say">
+                            <value name="MESSAGE">
+                                <shadow type="text">
+                                    <field name="TEXT">fail ${n}: ${i} should be ${operator.symbol} ${j}</field>
+                                </shadow>
+                            </value>
+                        </block>
+                    </statement>
+                    ${NEXT}
+                </block>
+            </next>
+            `.replace(/ {4}/g, ' '));
+        }
+    }
+}
+
+result = result.replace(NEXT, `
+<next>
+    <block type="looks_say">
+        <value name="MESSAGE">
+            <shadow type="text">
+                <field name="TEXT">end</field>
+            </shadow>
+        </value>
+    </block>
+</next>
+`);
+
+result = result.replace(NEXT, '');
+
+console.log(`Expecting ${n}`);
+fs.writeFileSync('matrix-inline-output-do-not-commit.xml', result);