diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b6c468a..593aa30 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,6 +7,22 @@ on:
     branches: [main, develop]
 
 jobs:
+  unit-tests:
+    name: Unit Tests
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: pnpm/action-setup@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: pnpm
+      - run: pnpm install --frozen-lockfile
+      # The serverless smoke tests serve the built `dist/` output, so the full
+      # suite only runs against a fresh build.
+      - run: pnpm build
+      - run: pnpm test
+
   build:
     runs-on: ubuntu-latest
     steps:
diff --git a/src/__tests__/jsonld.test.ts b/src/__tests__/jsonld.test.ts
index fad584b..ac25c6b 100644
--- a/src/__tests__/jsonld.test.ts
+++ b/src/__tests__/jsonld.test.ts
@@ -63,7 +63,9 @@ describe('serializeJsonLd - script-breaking sequences', () => {
   });
 
   it('emits the escape sequences instead of stripping the content', () => {
-    const out = serializeJsonLd(hostileArticle('</script>'));
+    // Input must contain every character the serializer escapes (<, >, &)
+    // so each expected escape sequence is actually exercised.
+    const out = serializeJsonLd(hostileArticle('</script>&'));
 
     for (const escape of EXPECTED_ESCAPES) {
       expect(out).toContain(escape);
diff --git a/src/__tests__/seo.test.tsx b/src/__tests__/seo.test.tsx
index a1b072d..e31d3a9 100644
--- a/src/__tests__/seo.test.tsx
+++ b/src/__tests__/seo.test.tsx
@@ -3,8 +3,9 @@
  *
  * Covers:
  * - canonicalUrl always returns the English (default) URL
- * - hreflangAlternates emits en, es, pt-BR, and x-default entries all pointing
- *   at the same canonical URL
+ * - hreflangAlternates emits en, es, pt-BR, and x-default entries, each
+ *   pointing at the locale-specific crawlable URL (en/x-default at the canonical
+ *   English URL)
  * - usePageSeo hook returns translated title/description for each locale
  * - Stellar, Grants, Blog, and CaseStudies pages render locale-correct <title>
  *   and <meta name="description"> for Spanish and Portuguese
@@ -127,7 +128,8 @@ describe('locale-aware page metadata', () => {
     window.history.replaceState({}, '', '/es/stellar');
     const { default: App } = await import('../App');
     render(<App />);
-    await screen.findByRole('heading', { level: 1, name: /integrac/i });
+    // Hero copy is English-only; the h1 renders "Stellar Integration" in every locale.
+    await screen.findByRole('heading', { level: 1, name: /stellar integration/i });
     expect(getDocumentTitle()).toMatch(/Stellar/i);
     // Spanish translation contains "Stellar" and "Wraith Protocol"
     expect(getDocumentTitle()).toMatch(/Wraith Protocol/i);
@@ -141,7 +143,7 @@ describe('locale-aware page metadata', () => {
     window.history.replaceState({}, '', '/pt/stellar');
     const { default: App } = await import('../App');
     render(<App />);
-    await screen.findByRole('heading', { level: 1, name: /stellar/i });
+    await screen.findByRole('heading', { level: 1, name: /stellar integration/i });
     expect(getDocumentTitle()).toMatch(/Stellar/i);
     expect(getDocumentTitle()).not.toBe('Stealth payments on Stellar – Wraith Protocol');
   });
@@ -164,7 +166,8 @@ describe('locale-aware page metadata', () => {
     window.history.replaceState({}, '', '/es/grants');
     const { default: App } = await import('../App');
     render(<App />);
-    await screen.findByRole('heading', { level: 1, name: /construye pagos privados/i });
+    // Hero copy is English-only; the h1 renders the English heading in every locale.
+    await screen.findByRole('heading', { level: 1, name: /build private payments/i });
     // Spanish: "Subvenciones – Wraith Protocol"
     expect(getDocumentTitle()).toMatch(/Subvenciones/i);
     expect(getDocumentTitle()).toMatch(/Wraith Protocol/i);
@@ -176,7 +179,8 @@ describe('locale-aware page metadata', () => {
     window.history.replaceState({}, '', '/pt/grants');
     const { default: App } = await import('../App');
     render(<App />);
-    await screen.findByRole('heading', { level: 1, name: /construa pagamentos privados/i });
+    // Hero copy is English-only; the h1 renders the English heading in every locale.
+    await screen.findByRole('heading', { level: 1, name: /build private payments/i });
     // Portuguese: "Bolsas – Wraith Protocol"
     expect(getDocumentTitle()).toMatch(/Bolsas/i);
     expect(getDocumentTitle()).toMatch(/Wraith Protocol/i);
@@ -248,8 +252,8 @@ describe('locale-aware page metadata', () => {
       level: 1,
       name: /soluções de privacidade do mundo real/i,
     });
-    // Portuguese: "Estudos de caso – Wraith Protocol"
-    expect(getDocumentTitle()).toMatch(/Estudos de caso/i);
+    // Portuguese: "Casos de Estudo — Wraith Protocol"
+    expect(getDocumentTitle()).toMatch(/Casos de Estudo/i);
     expect(getDocumentTitle()).toMatch(/Wraith Protocol/i);
   });
 
@@ -294,7 +298,8 @@ describe('locale-aware page metadata', () => {
     window.history.replaceState({}, '', '/es/stellar');
     const { default: App } = await import('../App');
     render(<App />);
-    await screen.findByRole('heading', { level: 1, name: /integrac/i });
+    // Hero copy is English-only; the h1 renders "Stellar Integration" in every locale.
+    await screen.findByRole('heading', { level: 1, name: /stellar integration/i });
 
     await waitFor(() => {
       const links = Array.from(document.head.querySelectorAll('link[rel="alternate"][hreflang]'));
@@ -312,7 +317,8 @@ describe('locale-aware page metadata', () => {
     window.history.replaceState({}, '', '/es/stellar');
     const { default: App } = await import('../App');
     render(<App />);
-    await screen.findByRole('heading', { level: 1, name: /integrac/i });
+    // Hero copy is English-only; the h1 renders "Stellar Integration" in every locale.
+    await screen.findByRole('heading', { level: 1, name: /stellar integration/i });
 
     await waitFor(() => {
       const links = Array.from(document.head.querySelectorAll('link[rel="alternate"][hreflang]'));
diff --git a/src/pages/Stellar.tsx b/src/pages/Stellar.tsx
index 30c9794..8b18a90 100644
--- a/src/pages/Stellar.tsx
+++ b/src/pages/Stellar.tsx
@@ -218,16 +218,14 @@ export default function Stellar() {
   return (
     <>
       <Helmet>
-        <title>Stealth payments on Stellar – Wraith Protocol</title>
-        <meta
-          name="description"
-          content="Low-cost, sub-second, ed25519 stealth payments on Stellar with Soroban smart contracts. Build private payment rails with the Wraith SDK."
-        />
-        <meta property="og:title" content="Stealth payments on Stellar – Wraith Protocol" />
-        <meta
-          property="og:description"
-          content="Low-cost, sub-second, ed25519 stealth payments on Stellar with Soroban smart contracts."
-        />
+        <title>{seo.title}</title>
+        <meta name="description" content={seo.description} />
+        <link rel="canonical" href={seo.canonical} />
+        {seo.alternates.map((alt) => (
+          <link key={alt.hrefLang} rel="alternate" hrefLang={alt.hrefLang} href={alt.href} />
+        ))}
+        <meta property="og:title" content={seo.title} />
+        <meta property="og:description" content={seo.description} />
         <meta property="og:image" content="https://usewraith.xyz/og/stellar.png" />
         <meta property="og:url" content={seo.canonical} />
         <meta property="og:type" content="website" />