Codex/whe 15 bootstrap workspace (#1)

* feat(WHE-15): bootstrap bun workspace with app and package scaffolds

* chore(WHE-17): switch workspace typecheck to tsgo

* chore(WHE-16): configure oxlint and oxfmt no-semicolon style

* chore: address CodeRabbit review feedback

* chore: apply coderabbit fixes and add review script

* docs: add ADR decision metadata

apps/miniapp/src/App.tsx

@@ -0,0 +1,10 @@
+function App() {
+  return (
+    <main>
+      <h1>Household Mini App</h1>
+      <p>SolidJS scaffold is ready</p>
+    </main>
+  )
+}
+
+export default App

apps/miniapp/src/index.css

@@ -0,0 +1 @@
+@import 'tailwindcss';

apps/miniapp/src/index.tsx

@@ -0,0 +1,13 @@
+/* @refresh reload */
+import { render } from 'solid-js/web'
+
+import './index.css'
+import App from './App'
+
+const root = document.getElementById('root')
+
+if (!root) {
+  throw new Error('Root element not found')
+}
+
+render(() => <App />, root)