feat(web): add runnable fleet console foundation

apps/web/src/main.tsx

@@ -0,0 +1,14 @@
+import { StrictMode } from 'react';
+import { createRoot } from 'react-dom/client';
+
+import { AppShell } from './app-shell.js';
+import './styles.css';
+
+const root = document.querySelector<HTMLElement>('#root');
+if (!root) throw new Error('Missing application root');
+
+createRoot(root).render(
+  <StrictMode>
+    <AppShell pathname={window.location.pathname} />
+  </StrictMode>,
+);