Add changelog and release-notes page

docs/content/reference/release-notes.md

@@ -0,0 +1,27 @@
+---
+title: "Release notes"
+description: "What changed in each kage release."
+weight: 40
+---
+
+The authoritative, commit-level history lives in
+[`CHANGELOG.md`](https://github.com/tamnd/kage/blob/main/CHANGELOG.md) and on the
+[releases page](https://github.com/tamnd/kage/releases). This page summarises
+each version.
+
+## v0.1.0
+
+The first release. kage clones a live website into a self-contained folder you
+can browse offline, with every script stripped out.
+
+- **`kage clone <url>`** renders each page in headless Chrome, strips all
+  JavaScript, and localises CSS, images, and fonts to relative paths.
+- **`kage serve [dir]`** previews a cloned folder over a local file server.
+- **Idempotent and resumable.** Each page is keyed by the file it writes, so a
+  page reached over http and https, or as `/index.html` versus `/`, is fetched
+  once. Re-running resumes; `--refresh` re-renders in place; `--force` starts
+  clean.
+- **Polite by default.** Honours `robots.txt`, seeds from `sitemap.xml`, scopes
+  to the seed host, and runs three parallel worker tiers.
+- **Packaged everywhere.** Archives, `.deb`/`.rpm`/`.apk`, a multi-arch GHCR
+  image with Chromium bundled, checksums, SBOMs, and a cosign signature.