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/src/lib/tw-persisted-unsandboxed.js

@@ -0,0 +1,32 @@
+// All we save is whether the box was checked last time, nothing more.
+// User still has to manually confirm loading the extension and has
+// every opportunity to uncheck the box.
+
+const PERSISTED_UNSANDBOXED_KEY = 'tw:persisted_unsandboxed';
+
+/**
+ * @returns {boolean} True if persistence enabled
+ */
+const getPersistedUnsandboxed = () => {
+    try {
+        return localStorage.getItem(PERSISTED_UNSANDBOXED_KEY) === 'true';
+    } catch (e) {
+        return false;
+    }
+};
+
+/**
+ * @param {boolean} persisted True if persistence enabled
+ */
+const setPersistedUnsandboxed = persisted => {
+    try {
+        localStorage.setItem(PERSISTED_UNSANDBOXED_KEY, persisted === true);
+    } catch (e) {
+        // ignore
+    }
+};
+
+export {
+    getPersistedUnsandboxed,
+    setPersistedUnsandboxed
+};