Re-land /policybench vanity redirect on app-v2

changelog_entry.yaml

@@ -5,6 +5,7 @@
       - Add the Introducing PolicyBench research post
       - Add UK Universal Credit rebalancing analysis dashboard at /uk/uc-rebalancing
       - Add UK fuel duty rise cancellation analysis dashboard at /uk/cancelling-fuel-duty-rise
+      - Redirect the /policybench and /:countryId/policybench vanity paths to policybench.org
     changed:
       - Proxy UK Python package docs at /uk/python and UK API docs at /uk/api so the country-parameterized "Python" and "API" nav links work on UK pages
       - Align the calculator app header (e.g. /us/reports) with the main website header — hover-open dropdowns, per-item underline, Model dropdown with sub-items, Python link, and Events under About

vercel.json

@@ -23,6 +23,16 @@
       "source": "/pe84",
       "destination": "/us/pe84",
       "permanent": false
+    },
+    {
+      "source": "/policybench",
+      "destination": "https://policybench.org",
+      "permanent": false
+    },
+    {
+      "source": "/:countryId/policybench",
+      "destination": "https://policybench.org",
+      "permanent": false
     }
   ],
   "rewrites": [

website/next.config.ts

@@ -84,6 +84,19 @@ const nextConfig: NextConfig = {
         destination: "/us/pe84",
         permanent: true,
       },
+      // Vanity redirects to the standalone PolicyBench site (external).
+      // policybench.org is country-agnostic, so both the bare and
+      // country-prefixed paths land on its root.
+      {
+        source: "/policybench",
+        destination: "https://policybench.org",
+        permanent: false,
+      },
+      {
+        source: "/:countryId/policybench",
+        destination: "https://policybench.org",
+        permanent: false,
+      },
       {
         source: "/uk/ads-dashboard",
         destination: "/us/ads-dashboard",

website/src/__tests__/config/next-config.test.ts

@@ -53,6 +53,14 @@ async function getBeforeFileRewrites() {
   return rewrites.beforeFiles ?? [];
 }
 
+async function getRedirects() {
+  if (!nextConfig.redirects) {
+    throw new Error("Expected Next config to define redirects.");
+  }
+
+  return nextConfig.redirects();
+}
+
 describe("nextConfig rewrites", () => {
   test("serves PolicyEngine icon fallbacks before app-zone proxies", async () => {
     const beforeFiles = await getBeforeFileRewrites();
@@ -68,3 +76,25 @@ describe("nextConfig rewrites", () => {
     ).toBeGreaterThan(expectedPolicyEngineIconRewrites.length - 1);
   });
 });
+
+describe("nextConfig redirects", () => {
+  test("redirects the bare /policybench vanity path to policybench.org", async () => {
+    const redirects = await getRedirects();
+
+    expect(redirects).toContainEqual({
+      source: "/policybench",
+      destination: "https://policybench.org",
+      permanent: false,
+    });
+  });
+
+  test("redirects the country-prefixed /policybench vanity path to policybench.org", async () => {
+    const redirects = await getRedirects();
+
+    expect(redirects).toContainEqual({
+      source: "/:countryId/policybench",
+      destination: "https://policybench.org",
+      permanent: false,
+    });
+  });
+});