server serve o PWA compilado (app/dist) com fallback SPA

server/src/index.ts

@@ -48,11 +48,23 @@ app.use(
   }),
 );
 
+// Static: / -> <repo>/app/dist (PWA compilado; fallback SPA para rotas do front)
+const APP_DIST = path.join(REPO_ROOT, "app", "dist");
+app.use(express.static(APP_DIST, { index: "index.html" }));
+
 // Rotas da API
 app.use("/api/judge", judgeRouter);
 app.use("/api/transcribe", transcribeRouter);
 app.use("/api/tts-proxy", ttsRouter);
 
+// Fallback SPA: qualquer GET que nao seja /api/* serve o index.html do app
+app.get(/^\/(?!api\/).*/, (req, res, next) => {
+  if (req.method !== "GET") return next();
+  res.sendFile(path.join(APP_DIST, "index.html"), (err) => {
+    if (err) next();
+  });
+});
+
 // Error handler padrão
 app.use(
   (