Initial scaffold: Go backend, React frontend, Docker Compose

- Go backend: config, db (PostgreSQL migrations), auth (argon2id + sessions),
  middleware (cookie sessions, RequireAuth), chi router, cmd/server
- React frontend: Vite + React 18 + TS + Tailwind + Gruvbox palette + terminal CSS
- Docker: compose.yml (Postgres, Valkey, minio, LiveKit, coturn, Caddy),
  livekit.yaml, Caddyfile, Dockerfile (multi-stage Go+Node+Alpine)
- .env.example, .gitignore, README.md

web/src/App.tsx

@@ -0,0 +1,17 @@
+function App() {
+  return (
+    <div className="h-full w-full flex flex-col items-center justify-center bg-gb-bg text-gb-fg">
+      <div className="terminal-border p-6 bg-gb-bg-h">
+        <pre className="text-gb-orange font-mono text-lg mb-4">
+          {"┌─ DUMPSTER ─┐"}
+        </pre>
+        <p className="text-gb-fg-s mb-4">The server is running. Frontend coming soon.</p>
+        <button className="terminal-button">
+          [LOGIN]
+        </button>
+      </div>
+    </div>
+  )
+}
+
+export default App