update

app/layout.js

@@ -1,8 +1,28 @@
 import "./globals.css";
 
+const siteUrl = "https://portfolio.valentin-massonniere.ch";
+const title = "Valentin Massonniere — AI & Robotics Engineer";
+const description =
+  "Portfolio of Valentin Massonniere, AI & Robotics Engineer and Data Scientist, working on real-time robotics platforms, ESP32 firmware, SLAM, and applied machine learning.";
+
 export const metadata = {
-  title: "Valentin Massonniere",
-  description: "Valentin Massonniere Portfolio",
+  metadataBase: new URL(siteUrl),
+  title,
+  description,
+  alternates: { canonical: siteUrl },
+  openGraph: {
+    type: "website",
+    url: siteUrl,
+    title,
+    description,
+    siteName: "Valentin Massonniere",
+    locale: "en_US",
+  },
+  twitter: {
+    card: "summary_large_image",
+    title,
+    description,
+  },
 };
 
 export default function RootLayout({ children }) {

app/page.js

@@ -3,6 +3,7 @@ import Presentation from "../components/Presentation";
 import About from "../components/About";
 import Projects from "../components/Projects";
 import Experiences from "@/components/Experiences";
+import Certifications from "@/components/Certifications";
 import Educations from "@/components/Educations";
 import Contact from "@/components/Contact";
 
@@ -12,6 +13,7 @@ export default function Home() {
       <Header></Header>
       <Presentation></Presentation>
       <About></About>
+      <Certifications></Certifications>
       <Projects></Projects>
       <Experiences></Experiences>
       <Educations></Educations>