Lock phone UI to portrait with PWA and landscape gate.

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

frontend/src/main.tsx

@@ -3,9 +3,11 @@ import { createRoot } from "react-dom/client";
 import { BrowserRouter } from "react-router-dom";
 import App from "./App";
 import { registerServiceWorker } from "./pwa/install";
+import { initPortraitLock } from "./pwa/portraitLock";
 import "./styles/app.css";
 
 registerServiceWorker();
+initPortraitLock();
 
 createRoot(document.getElementById("root")!).render(
   <StrictMode>