Improve SEO metadata and structured data

app/sitemap.ts

@@ -1,30 +1,30 @@
-import type { MetadataRoute } from "next";
+import type { MetadataRoute } from "next";
+import { absoluteUrl } from "@/data/site-config";
 
 export default function sitemap(): MetadataRoute.Sitemap {
-  const baseUrl = "https://grace-salamoun-architect.vercel.app";
-  const lastModified = new Date("2026-04-18T00:00:00.000Z");
+  const lastModified = new Date();
 
   return [
     {
-      url: `${baseUrl}/en`,
+      url: absoluteUrl("/en"),
       lastModified,
       changeFrequency: "monthly",
       priority: 1,
     },
     {
-      url: `${baseUrl}/ar`,
+      url: absoluteUrl("/ar"),
       lastModified,
       changeFrequency: "monthly",
       priority: 1,
     },
     {
-      url: `${baseUrl}/en/resume`,
+      url: absoluteUrl("/en/resume"),
       lastModified,
       changeFrequency: "monthly",
       priority: 0.8,
     },
     {
-      url: `${baseUrl}/ar/resume`,
+      url: absoluteUrl("/ar/resume"),
       lastModified,
       changeFrequency: "monthly",
       priority: 0.8,