feat: add hero section and service cards to the hub page

CVE Watch card resolves its href per-locale (cve-en/cve-fr), Convert
resolves to the same URL on both locales.

src/pages/en/index.astro

@@ -1,10 +1,25 @@
 ---
 import BaseLayout from '../../layouts/BaseLayout.astro';
 import Header from '../../components/Header.astro';
+import ServiceCard from '../../components/ServiceCard.astro';
+import { getDictionary } from '../../i18n';
+import { services } from '../../i18n/services';
 
 const locale = 'en';
+const t = getDictionary(locale);
 ---
 <BaseLayout locale={locale}>
   <Header locale={locale} />
-  <h1>Ombrora</h1>
+  <main>
+    <section class="hero">
+      <h1>{t.hero.title}</h1>
+      <p>{t.hero.subtitle}</p>
+    </section>
+    <section class="services">
+      <h2>{t.services.heading}</h2>
+      <div class="services-grid">
+        {services.map((service) => <ServiceCard service={service} locale={locale} />)}
+      </div>
+    </section>
+  </main>
 </BaseLayout>