Fix App.jsx two-page workflow JSX render and update study app layout

node_modules/@nodelib/fs.walk/out/readers/reader.d.ts

@@ -0,0 +1,6 @@
+import type Settings from '../settings';
+export default class Reader {
+    protected readonly _root: string;
+    protected readonly _settings: Settings;
+    constructor(_root: string, _settings: Settings);
+}