feat: add updates list page

app/updates/page.tsx

@@ -0,0 +1,40 @@
+import type { Metadata } from "next"
+import Link from "next/link"
+import { getAllUpdates } from "@/lib/updates"
+import { UpdateCard } from "@/components/updates/update-card"
+import { ArrowLeftIcon } from "lucide-react"
+
+export const metadata: Metadata = {
+  title: "Updates",
+  description: "See what's new in DeckyVault — version release notes, features, and improvements.",
+}
+
+export default function UpdatesPage() {
+  const updates = getAllUpdates()
+
+  return (
+    <main className="w-full max-w-2xl mx-auto px-4 py-8">
+      <div className="flex flex-row items-center gap-2 mb-6">
+        <Link
+          href="/"
+          className="text-text/60 hover:text-primary transition-colors"
+        >
+          <ArrowLeftIcon className="w-4 h-4" />
+        </Link>
+        <h1 className="text-2xl font-bold">Updates</h1>
+      </div>
+      <p className="text-text/60 mb-8">
+        Release notes and changelogs for every DeckyVault version.
+      </p>
+      {updates.length === 0 ? (
+        <p className="text-text/40 text-center py-16">No updates yet.</p>
+      ) : (
+        <div className="flex flex-col gap-3">
+          {updates.map((update) => (
+            <UpdateCard key={update.slug} update={update} />
+          ))}
+        </div>
+      )}
+    </main>
+  )
+}