fix: close durable queue and runtime gaps

packages/dev-server/test/load-runtime.test.ts

@@ -32,6 +32,32 @@ test("server loader data is available to page rendering", async () => {
   expect(await response!.text()).toContain("Ada,Lin / 2");
 });
 
+test("a server loader can return a redirect Response", async () => {
+  const root = mkdtempSync(join(tmpdir(), "wrnexus-load-redirect-"));
+  roots.push(root);
+  const app = join(root, "app");
+  mkdirSync(join(app, "pages"), { recursive: true });
+  writeFileSync(join(app, "pages/private.ts"), "export default () => '';\n");
+  const handlers = createHandlers({
+    mode: "production",
+    hmr: false,
+    router: buildRouter(app),
+    loadModule: async () => ({
+      __wrnexusLoad: async () => Response.redirect("https://example.test/login", 303),
+      default: () => {
+        throw new Error("redirected pages must not render");
+      },
+    }),
+    getMiddleware: async () => [],
+    assets: { serve: async () => null },
+  } satisfies RuntimeDeps);
+  const response = await handlers.fetch(new Request("https://example.test/private"), {
+    upgrade: () => false,
+  });
+  expect(response?.status).toBe(303);
+  expect(response?.headers.get("location")).toBe("https://example.test/login");
+});
+
 test("HMR page synchronization initializes request-scoped loader caching", async () => {
   const root = mkdtempSync(join(tmpdir(), "wrnexus-hmr-load-runtime-"));
   roots.push(root);