diff --git a/src/routes/nook/changelog-archive.ts b/src/routes/nook/changelog-archive.ts
new file mode 100644
index 0000000..38a2f42
--- /dev/null
+++ b/src/routes/nook/changelog-archive.ts
@@ -0,0 +1,38 @@
+// Releases older than the appcast's retention, recovered from the
+// changelog file's git history (The-Nook 1ad8a69 / db165cd) and checked
+// in so /changelog renders the full story. 0.3.1 and 0.6.1 shipped
+// without written notes and are absent by design. Generated with the
+// same section->HTML rules as embed_release_notes.py.
+export interface ArchivedRelease {
+  version: string;
+  date: string;
+  notesHtml: string;
+}
+
+export const ARCHIVED_RELEASES: ArchivedRelease[] = [
+  {
+    "version": "0.5.0",
+    "date": "2026-09-07",
+    "notesHtml": "<p><b>Added</b></p><ul><li>Agent plugins detected as drifted, with reason and a Repair button.</li><li>Keep Mac awake during agent runs while sessions are active (Advanced settings).</li><li>Release notes card in General settings, plus changelog in update descriptions.</li></ul><p><b>Changed</b></p><ul><li>Charge-limit and fan controls wait until a matching helper build is installed.</li><li>Fans and OS notifications show an Enable-helper option where needed.</li><li>Code was reorganized into clearer folders, with no behavior change.</li></ul><p><b>Fixed</b></p><ul><li>Keep Mac awake during agent runs: Advanced settings holds off idle sleep while any agent is working or waiting on you.</li><li>Settings open reliably from the island gear menu.</li><li>Privileged operations use one installer path with consistent signing; fan control and charge limiting work correctly again.</li><li>Temperature sensor selection sources readings reliably.</li><li>opencode sessions keep the model identity through Stop envelopes.</li></ul>"
+  },
+  {
+    "version": "0.4.1",
+    "date": "2026-09-06",
+    "notesHtml": "<p><b>Fixed</b></p><ul><li>Settings not opening from the island gear menu.</li></ul>"
+  },
+  {
+    "version": "0.4.0",
+    "date": "2026-09-06",
+    "notesHtml": "<p><b>Added</b></p><ul><li>First-run onboarding: interests, panel shaping, slot choices; replayable from Settings.</li><li>Day modules: tap-to-edit events, calendar-color dots, access gates.</li><li>Power flow and significant-energy sections, charge limit top-up mode.</li><li>Ship DMG installer with appcast; drop the zip.</li><li>Report a bug from the About pane; Sentry crash reporting.</li></ul><p><b>Changed</b></p><ul><li>Agent approvals terminology; island &quot;Collapsed&quot; renamed to &quot;Compact&quot;.</li><li>Bridge endpoint baked into `~/.nook/endpoint` for plugins.</li><li>Plug/charge state read from IOPS (registry keys lag ~30 s).</li><li>License check timeout improved.</li></ul><p><b>Fixed</b></p><ul><li>Call-detection scrim faked rings; nil panel ids crashed Settings unwraps; media-key tap teardown leaked run-loop sources; empty sessions read in-flight; interrupted pi turn sent no last assistant message.</li></ul>"
+  },
+  {
+    "version": "0.3.0",
+    "date": "2026-09-05",
+    "notesHtml": "<p><b>Added</b></p><ul><li>Call band: caller photo, live waveform, route pickers, banner suppression.</li><li>Music interception service and battery thermal service.</li><li>Power panel: wall-input wattage, charge limit policy, top-up mode.</li><li>External brightness controls; keyboard system; global slot ordering.</li><li>Report-a-bug About entry; Sentry crash and performance reporting.</li></ul><p><b>Changed</b></p><ul><li>Island sequencing deepened behind IslandSurface; settings unified behind PaneShell.</li><li>Media-key handling: peek stacks for call and media bands.</li></ul><p><b>Fixed</b></p><ul><li>NowPlaying auto-pause for browser sources; battery module; sizing and expansion bugs.</li></ul>"
+  },
+  {
+    "version": "0.2.0",
+    "date": "2026-08-26",
+    "notesHtml": "<p><b>Added</b></p><ul><li>Agent session cards: status verbs, slot config sheet, approvals.</li><li>Media, call, power, Day modules; Settings with per-pane cards.</li></ul><p><b>Fixed</b></p><ul><li>Initial public reliability pass.</li></ul>"
+  }
+];
diff --git a/src/routes/nook/changelog.tsx b/src/routes/nook/changelog.tsx
index 0455352..4edb324 100644
--- a/src/routes/nook/changelog.tsx
+++ b/src/routes/nook/changelog.tsx
@@ -17,19 +17,39 @@ import { PageHead } from "~/components/PageHead";
 import { EdgeCacheHeaders } from "~/components/EdgeCacheHeaders";
 import SubdomainHeader from "~/components/SubdomainHeader";
 import { fetchAppcastReleases } from "~/routes/api/the-nook/_appcast";
+import { ARCHIVED_RELEASES } from "~/routes/nook/changelog-archive";
 
 const getReleases = query(async () => {
   "use server";
-  return fetchAppcastReleases();
+  // Appcast items are authoritative (they carry build numbers); releases
+  // older than the appcast's retention come from the checked-in archive,
+  // recovered from the changelog file's git history. Both normalize to
+  // AppcastRelease so the page renders one shape.
+  const live = await fetchAppcastReleases();
+  const liveVersions = new Set(live.map((r) => r.version));
+  const archived = ARCHIVED_RELEASES.filter(
+    (r) => !liveVersions.has(r.version)
+  ).map((r) => ({ ...r, build: null }));
+  return [...live, ...archived];
 }, "nook-changelog-releases");
 
 export default function NookChangelogPage() {
   const releases = createAsync(() => getReleases());
-  // Newest release starts open; every other row starts collapsed.
+  // Newest release starts open; every other row starts collapsed. `null`
+  // means "the user hasn't touched the accordion yet"; after any click the
+  // signal holds a version or the NONE sentinel — collapsing the open row
+  // sets NONE, so all sections stay closed instead of snapping back open.
+  const NONE = "__none__";
   const [openVersion, setOpenVersion] = createSignal<string | null>(null);
 
-  const isOpen = (version: string, index: number) =>
-    openVersion() === null ? index === 0 : openVersion() === version;
+  const isOpen = (version: string, index: number) => {
+    const open = openVersion();
+    if (open === null) return index === 0;
+    return open !== NONE && open === version;
+  };
+
+  const toggle = (version: string, index: number) =>
+    setOpenVersion(isOpen(version, index) ? NONE : version);
 
   return (
     <>
@@ -65,11 +85,7 @@ export default function NookChangelogPage() {
                     type="button"
                     class="hover:bg-base flex w-full items-baseline gap-x-3 gap-y-1 p-5 text-left transition-colors"
                     aria-expanded={isOpen(release.version, i())}
-                    onClick={() =>
-                      setOpenVersion(
-                        isOpen(release.version, i()) ? null : release.version
-                      )
-                    }
+                    onClick={() => toggle(release.version, i())}
                   >
                     <span class="text-subtext1 w-4 shrink-0 font-mono text-sm">
                       {isOpen(release.version, i()) ? "−" : "+"}