Initial commit: virtual art gallery application.

Express API with PostgreSQL, React/Vite/Three.js frontend, and locally cached artwork images.

Co-authored-by: Cursor <cursoragent@cursor.com>

client/src/main.tsx

@@ -0,0 +1,10 @@
+import { StrictMode } from 'react'
+import { createRoot } from 'react-dom/client'
+import './index.css'
+import App from './App.tsx'
+
+createRoot(document.getElementById('root')!).render(
+  <StrictMode>
+    <App />
+  </StrictMode>,
+)