Build for deployment at the article's public path

vercel.json

@@ -0,0 +1,7 @@
+{
+  "$schema": "https://openapi.vercel.sh/vercel.json",
+  "buildCommand": "bun run build",
+  "outputDirectory": "dist",
+  "cleanUrls": true,
+  "redirects": [{ "source": "/", "destination": "/uk/introducing-policyengine-uk-chat", "permanent": false }]
+}

vite.config.js

@@ -1,13 +1,22 @@
 import { defineConfig } from 'vite';
 import react from '@vitejs/plugin-react';
 
+// The article is proxied by policyengine-app-v2's zone routes, which forward
+// /uk/introducing-policyengine-uk-chat and everything beneath it to this
+// deployment path-for-path. Serving the build at that same path on our own
+// Vercel domain means an asset URL resolves identically whether the reader
+// arrived via policyengine.org or the deployment directly — the pattern
+// /uk/chat and the WATCA calculator already use.
+const ARTICLE_PATH = '/uk/introducing-policyengine-uk-chat';
+
 export default defineConfig({
-  base: './',
+  base: `${ARTICLE_PATH}/`,
   plugins: [react()],
   optimizeDeps: {
     entries: ['index.html'],
   },
   build: {
-    outDir: 'dist',
+    outDir: `dist${ARTICLE_PATH}`,
+    emptyOutDir: true,
   },
 });