feat: deploy portable workspace registry

backend/test/e2e-f1.test.ts

@@ -43,11 +43,12 @@ test("loop F1: crea sessione → SSE riceve il widget → risponde → il modell
   const base = `http://127.0.0.1:${(app.server.address() as any).port}`;
 
   // 1. Create session — spawns fake-pi, sends prompt, fake-pi emits widget
-  await fetch(`${base}/sessions`, {
+  const created = await fetch(`${base}/sessions`, {
     method: "POST",
     headers: { "content-type": "application/json" },
     body: JSON.stringify({ workspace: "w", question: "q" }),
   });
+  expect(created.status).toBe(200);
 
   // 2. Small delay to let fake-pi process the prompt and fill pendingWidget
   await new Promise((r) => setTimeout(r, 50));