feat: add react-markdown dependency and update README with release process

app/changelog/page.tsx

@@ -0,0 +1,46 @@
+import fs from 'fs'
+import path from 'path'
+import ReactMarkdown from 'react-markdown'
+import type { Metadata } from 'next'
+
+export const metadata: Metadata = {
+  title: 'Changelog - Pulse',
+  description: 'Release history and notable changes for Pulse, privacy-first web analytics.',
+}
+
+/**
+ * Reads CHANGELOG.md from the project root and renders it on the /changelog page.
+ * Content is loaded at build time; redeploy to show new releases.
+ */
+export default function ChangelogPage() {
+  const changelogPath = path.join(process.cwd(), 'CHANGELOG.md')
+  const content = fs.readFileSync(changelogPath, 'utf-8')
+
+  return (
+    <div className="mx-auto max-w-3xl px-4 sm:px-6 py-8">
+      <h1 className="text-3xl font-bold text-neutral-900 dark:text-white mb-2">
+        Changelog
+      </h1>
+      <p className="text-neutral-600 dark:text-neutral-400 mb-8 text-sm">
+        Release history and notable changes. We use{' '}
+        <a
+          href="https://keepachangelog.com/en/1.1.0/"
+          target="_blank"
+          rel="noopener noreferrer"
+          className="text-brand-orange hover:underline"
+        >
+          Keep a Changelog
+        </a>{' '}
+        and <strong>0.x.y</strong> versioning while in initial development.
+      </p>
+      <article
+        className="prose prose-neutral dark:prose-invert max-w-none
+          prose-headings:font-semibold prose-headings:tracking-tight
+          prose-a:text-brand-orange prose-a:no-underline hover:prose-a:underline
+          prose-ul:my-4 prose-li:my-0.5"
+      >
+        <ReactMarkdown>{content}</ReactMarkdown>
+      </article>
+    </div>
+  )
+}