Add sitemap and link it from robots.txt.

Author: njhenry

site/package-lock.json

@@ -16,6 +16,7 @@
   },
   "devDependencies": {
     "@vitejs/plugin-vue": "^6.0.5",
-    "vite": "^8.0.0"
+    "vite": "^8.0.0",
+    "vite-plugin-sitemap": "^0.8.2"
   }
 }

site/package.json

@@ -46,3 +46,6 @@ Disallow: /
 
 User-agent: meta-externalagent
 Disallow: /
+
+# --- Sitemap ---
+Sitemap: https://openpois.org/sitemap.xml

site/public/robots.txt

@@ -1,9 +1,23 @@
 import { defineConfig } from 'vite'
 import vue from '@vitejs/plugin-vue'
+import sitemap from 'vite-plugin-sitemap'
 
 export default defineConfig({
   base: '/',
-  plugins: [vue()],
+  plugins: [
+    vue(),
+    sitemap({
+      hostname: 'https://openpois.org',
+      // index.html, about.html and taxonomy.html are globbed automatically from
+      // the build output. Only /docs/ (the Sphinx site) must be listed here: it
+      // is copied into dist/docs AFTER `vite build` by the deploy workflow, so
+      // the plugin's glob can't see it at sitemap-generation time.
+      dynamicRoutes: ['/docs/'],
+      // Keep the hand-written public/robots.txt (content signals + AI opt-out).
+      // The plugin would otherwise overwrite it with a generated stub.
+      generateRobotsTxt: false,
+    }),
+  ],
   build: {
     rollupOptions: {
       output: {