feat: add update viewer page with static generation

app/updates/[slug]/page.tsx

@@ -0,0 +1,58 @@
+import type { Metadata } from "next"
+import { notFound } from "next/navigation"
+import Link from "next/link"
+import { ArrowLeftIcon } from "lucide-react"
+import { getAllUpdateSlugs, getUpdateBySlug } from "@/lib/updates"
+import { UpdateViewer } from "@/components/updates/update-viewer"
+
+export async function generateStaticParams() {
+  const slugs = getAllUpdateSlugs()
+  return slugs.map((slug) => ({ slug }))
+}
+
+export async function generateMetadata({
+  params,
+}: {
+  params: Promise<{ slug: string }>
+}): Promise<Metadata> {
+  const { slug } = await params
+  let update
+  try {
+    update = await getUpdateBySlug(slug)
+  } catch {
+    return { title: "Update Not Found" }
+  }
+  return {
+    title: `${update.meta.title} | DeckyVault`,
+    description: update.meta.summary,
+  }
+}
+
+export default async function UpdatePage({
+  params,
+}: {
+  params: Promise<{ slug: string }>
+}) {
+  const { slug } = await params
+  let update
+  try {
+    update = await getUpdateBySlug(slug)
+  } catch {
+    notFound()
+  }
+
+  return (
+    <main className="w-full">
+      <div className="w-full max-w-4xl mx-auto px-4 pt-4">
+        <Link
+          href="/updates"
+          className="inline-flex items-center gap-1 text-sm text-text/60 hover:text-primary transition-colors"
+        >
+          <ArrowLeftIcon className="w-3 h-3" />
+          Back to updates
+        </Link>
+      </div>
+      <UpdateViewer update={update} />
+    </main>
+  )
+}