diff --git a/scripts/run-hypertwist-web-surface-validation.sh b/scripts/run-hypertwist-web-surface-validation.sh
index 8ad70f3..0c70c98 100644
--- a/scripts/run-hypertwist-web-surface-validation.sh
+++ b/scripts/run-hypertwist-web-surface-validation.sh
@@ -144,6 +144,7 @@ run_step \
   src/__tests__/protected-app-pages.test.tsx \
   src/__tests__/DashboardOverviewPage.test.tsx \
   src/__tests__/app-route-tree.test.tsx \
+  src/__tests__/public-route-registry.test.ts \
   src/__tests__/route-shells.test.tsx \
   src/__tests__/release-manifest.test.ts \
   src/__tests__/public-marketing-pages.test.tsx \
diff --git a/website/README.md b/website/README.md
index bc4d331..1c3f25c 100644
--- a/website/README.md
+++ b/website/README.md
@@ -14,6 +14,7 @@ First-party `hypertwist.app` surface for HyperTwist:
 - public launch-status callouts across pricing, download, and notices surfaces
 - route-aware metadata, canonical, Open Graph, Twitter-card, and protected-route noindex posture for the live `hypertwist.app` surface
 - first-party `robots.txt` plus `sitemap.xml` for the public crawlable route set while keeping `/app`, `/login`, and `/register` out of crawler posture
+- a shared public-route registry that now drives marketing navigation, footer links, router entries, and sitemap generation from one source of truth
 - runtime diagnostics that distinguish local, mixed, and public auth deployment posture
 - public open-source notices surface required by HyperTwist's MPL distribution doctrine
 
diff --git a/website/package.json b/website/package.json
index 66afdc2..9edafcd 100644
--- a/website/package.json
+++ b/website/package.json
@@ -6,10 +6,11 @@
   "type": "module",
   "scripts": {
     "dev": "vite",
-    "build": "tsc && vite build",
+    "build": "npm run render:sitemap && tsc && vite build",
     "preview": "vite preview",
     "type-check": "tsc --noEmit",
     "test": "vitest run",
+    "render:sitemap": "node scripts/render-public-sitemap.mjs",
     "check:runtime-readiness": "node scripts/check-runtime-readiness.mjs",
     "render:same-origin-deployment": "node scripts/render-same-origin-deployment.mjs",
     "render:same-origin-bundle": "node scripts/render-same-origin-bundle.mjs",
diff --git a/website/scripts/render-public-sitemap.mjs b/website/scripts/render-public-sitemap.mjs
new file mode 100644
index 0000000..b92257b
--- /dev/null
+++ b/website/scripts/render-public-sitemap.mjs
@@ -0,0 +1,24 @@
+import { readFile, writeFile } from 'node:fs/promises'
+import path from 'node:path'
+import { fileURLToPath } from 'node:url'
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url))
+const registryPath = path.join(__dirname, '..', 'src', 'public-route-registry.json')
+const sitemapPath = path.join(__dirname, '..', 'public', 'sitemap.xml')
+const baseUrl = 'https://hypertwist.app'
+
+const routeRegistry = JSON.parse(await readFile(registryPath, 'utf8'))
+const crawlableRoutes = routeRegistry.filter((route) => route && route.crawlable === true)
+
+const xml = [
+  '<?xml version="1.0" encoding="UTF-8"?>',
+  '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">',
+  ...crawlableRoutes.map((route) => (
+    `  <url>\n    <loc>${baseUrl}${route.path === '/' ? '/' : route.path}</loc>\n  </url>`
+  )),
+  '</urlset>',
+  '',
+].join('\n')
+
+await writeFile(sitemapPath, xml, 'utf8')
+console.log(`Rendered sitemap for ${crawlableRoutes.length} crawlable routes to ${sitemapPath}`)
diff --git a/website/src/__tests__/public-route-registry.test.ts b/website/src/__tests__/public-route-registry.test.ts
new file mode 100644
index 0000000..22cd67c
--- /dev/null
+++ b/website/src/__tests__/public-route-registry.test.ts
@@ -0,0 +1,46 @@
+import { describe, expect, it } from 'vitest'
+import {
+  buildPublicSitemapXml,
+  crawlablePublicRoutes,
+  footerLinks,
+  marketingNavLinks,
+  publicRouteRegistry,
+} from '../public-route-registry'
+
+describe('public route registry', () => {
+  it('keeps unique route definitions for the public shell', () => {
+    const uniquePaths = new Set(publicRouteRegistry.map((route) => route.path))
+
+    expect(uniquePaths.size).toBe(publicRouteRegistry.length)
+  })
+
+  it('exposes the intended primary navigation and footer surfaces', () => {
+    expect(marketingNavLinks).toEqual([
+      { to: '/', label: 'Home' },
+      { to: '/features', label: 'Features' },
+      { to: '/about', label: 'About' },
+      { to: '/resources', label: 'Resources' },
+      { to: '/pricing', label: 'Pricing' },
+      { to: '/download', label: 'Download' },
+    ])
+
+    expect(footerLinks).toContainEqual({
+      to: '/open-source-notices',
+      label: 'Open Source Notices',
+    })
+  })
+
+  it('keeps auth routes out of crawlable sitemap posture', () => {
+    expect(crawlablePublicRoutes.map((route) => route.path)).not.toContain('/login')
+    expect(crawlablePublicRoutes.map((route) => route.path)).not.toContain('/register')
+  })
+
+  it('renders sitemap XML from the shared crawlable route registry', () => {
+    const xml = buildPublicSitemapXml()
+
+    expect(xml).toContain('<loc>https://hypertwist.app/</loc>')
+    expect(xml).toContain('<loc>https://hypertwist.app/features</loc>')
+    expect(xml).not.toContain('/login')
+    expect(xml).not.toContain('/register')
+  })
+})
diff --git a/website/src/components/layout/MarketingShell.tsx b/website/src/components/layout/MarketingShell.tsx
index 642ee81..62cb000 100644
--- a/website/src/components/layout/MarketingShell.tsx
+++ b/website/src/components/layout/MarketingShell.tsx
@@ -2,7 +2,7 @@ import { Link, NavLink } from 'react-router-dom'
 import { usePlatformAuth } from '../../auth/platform-auth'
 import { MarketingLaunchStatusBanner } from '../ui/PublicLaunchStatus'
 import { brandConfig } from '../../site-config'
-import { footerLinks, marketingNavLinks } from '../../site-data'
+import { footerLinks, marketingNavLinks } from '../../public-route-registry'
 
 export function MarketingShell({
   title,
diff --git a/website/src/public-route-registry.json b/website/src/public-route-registry.json
new file mode 100644
index 0000000..ffb0baa
--- /dev/null
+++ b/website/src/public-route-registry.json
@@ -0,0 +1,122 @@
+[
+  {
+    "path": "/",
+    "label": "Home",
+    "loaderTitle": "Loading HyperTwist...",
+    "nav": true,
+    "footer": false,
+    "crawlable": true
+  },
+  {
+    "path": "/features",
+    "label": "Features",
+    "loaderTitle": "Feature atlas",
+    "nav": true,
+    "footer": true,
+    "crawlable": true
+  },
+  {
+    "path": "/about",
+    "label": "About",
+    "loaderTitle": "About HyperTwist",
+    "nav": true,
+    "footer": true,
+    "crawlable": true
+  },
+  {
+    "path": "/resources",
+    "label": "Resources",
+    "loaderTitle": "Resources",
+    "nav": true,
+    "footer": true,
+    "crawlable": true
+  },
+  {
+    "path": "/docs",
+    "label": "Docs",
+    "loaderTitle": "Documentation",
+    "nav": false,
+    "footer": false,
+    "crawlable": true
+  },
+  {
+    "path": "/support",
+    "label": "Support",
+    "loaderTitle": "Support",
+    "nav": false,
+    "footer": false,
+    "crawlable": true
+  },
+  {
+    "path": "/changelog",
+    "label": "Release notes",
+    "loaderTitle": "Release notes",
+    "nav": false,
+    "footer": false,
+    "crawlable": true
+  },
+  {
+    "path": "/pricing",
+    "label": "Pricing",
+    "loaderTitle": "Pricing",
+    "nav": true,
+    "footer": true,
+    "crawlable": true
+  },
+  {
+    "path": "/download",
+    "label": "Download",
+    "loaderTitle": "Download center",
+    "nav": true,
+    "footer": true,
+    "crawlable": true
+  },
+  {
+    "path": "/open-source-notices",
+    "label": "Open Source Notices",
+    "loaderTitle": "Open source notices",
+    "nav": false,
+    "footer": true,
+    "crawlable": true
+  },
+  {
+    "path": "/privacy",
+    "label": "Privacy",
+    "loaderTitle": "Privacy",
+    "nav": false,
+    "footer": true,
+    "crawlable": true
+  },
+  {
+    "path": "/terms",
+    "label": "Terms",
+    "loaderTitle": "Terms",
+    "nav": false,
+    "footer": true,
+    "crawlable": true
+  },
+  {
+    "path": "/shipping-payment",
+    "label": "Shipping & Payment",
+    "loaderTitle": "Shipping & payment",
+    "nav": false,
+    "footer": true,
+    "crawlable": true
+  },
+  {
+    "path": "/login",
+    "label": "Log in",
+    "loaderTitle": "Log in",
+    "nav": false,
+    "footer": false,
+    "crawlable": false
+  },
+  {
+    "path": "/register",
+    "label": "Create account",
+    "loaderTitle": "Create account",
+    "nav": false,
+    "footer": false,
+    "crawlable": false
+  }
+]
diff --git a/website/src/public-route-registry.ts b/website/src/public-route-registry.ts
new file mode 100644
index 0000000..172ee9a
--- /dev/null
+++ b/website/src/public-route-registry.ts
@@ -0,0 +1,37 @@
+import routeRegistry from './public-route-registry.json'
+
+export type PublicRouteDefinition = {
+  path: string
+  label: string
+  loaderTitle: string
+  nav: boolean
+  footer: boolean
+  crawlable: boolean
+}
+
+export const publicRouteRegistry = routeRegistry as PublicRouteDefinition[]
+
+export const marketingNavLinks = publicRouteRegistry
+  .filter((route) => route.nav)
+  .map((route) => ({
+    to: route.path,
+    label: route.label,
+  }))
+
+export const footerLinks = publicRouteRegistry
+  .filter((route) => route.footer)
+  .map((route) => ({
+    to: route.path,
+    label: route.label,
+  }))
+
+export const crawlablePublicRoutes = publicRouteRegistry.filter((route) => route.crawlable)
+
+export function buildPublicSitemapXml(baseUrl = 'https://hypertwist.app') {
+  const normalizedBaseUrl = baseUrl.replace(/\/$/, '')
+  const urlEntries = crawlablePublicRoutes
+    .map((route) => `  <url>\n    <loc>${normalizedBaseUrl}${route.path === '/' ? '/' : route.path}</loc>\n  </url>`)
+    .join('\n')
+
+  return `<?xml version="1.0" encoding="UTF-8"?>\n<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">\n${urlEntries}\n</urlset>\n`
+}
diff --git a/website/src/router/PublicRoutes.tsx b/website/src/router/PublicRoutes.tsx
index 76238e3..a2e25a6 100644
--- a/website/src/router/PublicRoutes.tsx
+++ b/website/src/router/PublicRoutes.tsx
@@ -1,6 +1,7 @@
 import { Suspense, lazy, type ReactNode } from 'react'
 import { Route } from 'react-router-dom'
 import { GeneralPageLoader } from '../components/ui/Skeletons'
+import { publicRouteRegistry } from '../public-route-registry'
 
 const HomeLanding = lazy(() => import('../pages/public-pages-marketing').then((m) => ({ default: m.HomeLanding })))
 const FeaturesPage = lazy(() => import('../pages/public-pages-features').then((m) => ({ default: m.FeaturesPage })))
@@ -18,6 +19,24 @@ const ShippingPaymentPage = lazy(() => import('../pages/public-pages-commerce').
 const LoginPage = lazy(() => import('../pages/auth-pages').then((m) => ({ default: m.LoginPage })))
 const RegisterPage = lazy(() => import('../pages/auth-pages').then((m) => ({ default: m.RegisterPage })))
 
+const publicRouteElements: Record<string, ReactNode> = {
+  '/': <HomeLanding />,
+  '/features': <FeaturesPage />,
+  '/about': <AboutPage />,
+  '/resources': <ResourcesPage />,
+  '/docs': <DocsPage />,
+  '/support': <SupportPage />,
+  '/changelog': <ChangelogPage />,
+  '/pricing': <PricingPage />,
+  '/download': <DownloadPage />,
+  '/open-source-notices': <OpenSourceNoticesPage />,
+  '/privacy': <PrivacyPage />,
+  '/terms': <TermsPage />,
+  '/shipping-payment': <ShippingPaymentPage />,
+  '/login': <LoginPage />,
+  '/register': <RegisterPage />,
+}
+
 function withGeneralLoader(title: string, element: ReactNode) {
   return <Suspense fallback={<GeneralPageLoader title={title} />}>{element}</Suspense>
 }
@@ -25,21 +44,13 @@ function withGeneralLoader(title: string, element: ReactNode) {
 export function renderPublicRoutes() {
   return (
     <>
-      <Route path="/" element={withGeneralLoader('Loading HyperTwist...', <HomeLanding />)} />
-      <Route path="/features" element={withGeneralLoader('Feature atlas', <FeaturesPage />)} />
-      <Route path="/about" element={withGeneralLoader('About HyperTwist', <AboutPage />)} />
-      <Route path="/resources" element={withGeneralLoader('Resources', <ResourcesPage />)} />
-      <Route path="/docs" element={withGeneralLoader('Documentation', <DocsPage />)} />
-      <Route path="/support" element={withGeneralLoader('Support', <SupportPage />)} />
-      <Route path="/changelog" element={withGeneralLoader('Release notes', <ChangelogPage />)} />
-      <Route path="/pricing" element={withGeneralLoader('Pricing', <PricingPage />)} />
-      <Route path="/download" element={withGeneralLoader('Download center', <DownloadPage />)} />
-      <Route path="/open-source-notices" element={withGeneralLoader('Open source notices', <OpenSourceNoticesPage />)} />
-      <Route path="/privacy" element={withGeneralLoader('Privacy', <PrivacyPage />)} />
-      <Route path="/terms" element={withGeneralLoader('Terms', <TermsPage />)} />
-      <Route path="/shipping-payment" element={withGeneralLoader('Shipping & payment', <ShippingPaymentPage />)} />
-      <Route path="/login" element={withGeneralLoader('Log in', <LoginPage />)} />
-      <Route path="/register" element={withGeneralLoader('Create account', <RegisterPage />)} />
+      {publicRouteRegistry.map((route) => (
+        <Route
+          key={route.path}
+          path={route.path}
+          element={withGeneralLoader(route.loaderTitle, publicRouteElements[route.path])}
+        />
+      ))}
     </>
   )
 }
diff --git a/website/src/site-data.ts b/website/src/site-data.ts
index 69020e7..dc83cac 100644
--- a/website/src/site-data.ts
+++ b/website/src/site-data.ts
@@ -26,15 +26,6 @@ export const capabilityPillars = [
   },
 ] as const
 
-export const marketingNavLinks = [
-  { to: '/', label: 'Home' },
-  { to: '/features', label: 'Features' },
-  { to: '/about', label: 'About' },
-  { to: '/resources', label: 'Resources' },
-  { to: '/pricing', label: 'Pricing' },
-  { to: '/download', label: 'Download' },
-] as const
-
 export const deliverySurfaceCards = [
   {
     title: 'Public website',
@@ -648,18 +639,6 @@ export const sourceAvailability = {
   releaseNotesUrl,
 }
 
-export const footerLinks = [
-  { to: '/features', label: 'Features' },
-  { to: '/about', label: 'About' },
-  { to: '/resources', label: 'Resources' },
-  { to: '/pricing', label: 'Pricing' },
-  { to: '/download', label: 'Download' },
-  { to: '/open-source-notices', label: 'Open Source Notices' },
-  { to: '/privacy', label: 'Privacy' },
-  { to: '/terms', label: 'Terms' },
-  { to: '/shipping-payment', label: 'Shipping & Payment' },
-] as const
-
 export const supportFaqs = [
   {
     question: 'Is the simulator fully in the browser?',