Build the full site from the copy decks

Adds About, Contact, Services (index + 8) and Industries (index + 7),
generated from structured JSON converted out of the .docx copy decks
by scripts/convert-docs.py. Shared header with dropdowns, footer,
contact form (mailto until a backend exists), FAQ/breadcrumb JSON-LD,
sitemap and robots.

src/lib/metadata.ts

@@ -0,0 +1,13 @@
+import type { Metadata } from "next";
+import type { Page } from "./pages";
+
+export function pageMetadata(page: Page): Metadata {
+  const title = page.meta.title ?? "AI Growth Technologies";
+  const description = page.meta.description ?? undefined;
+  return {
+    title,
+    description,
+    alternates: { canonical: page.path },
+    openGraph: { type: "website", url: page.path, siteName: "AI Growth Technologies", title, description },
+  };
+}