feat(hobbs-organizer): v1.2.0 photo frame (/photo) with Google Photos shared albums

- /photo full-screen slideshow (crossfade, blurred backdrop or fill, shuffle, date)
- admin Photos tab: add shared-album links (check, sync now, status/stale warnings),
  slideshow options, browser-resized uploads
- 6-hourly album sync scraping the share page (Library API no longer exposes
  user albums), caches 1920px + 64px copies in /data/photos
- /api/health/photos -> 503 when an album has not synced for 48h
- history/restore covers photo settings; min admin password length 6

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01E9NnVEico3WvFxLyjy1iW3

tv app/Hobbs-Family-Organizer-Self-Hosted-v1.0.0/app/api/admin/history/route.ts

@@ -1,4 +1,5 @@
 import { json, readJsonBody, requireAdmin } from "../../../_lib/auth";
+import { syncAll } from "../../../_lib/photos";
 import { listHistory, readHistorySnapshot, saveSettings } from "../../../_lib/store";
 
 export const dynamic = "force-dynamic";
@@ -9,14 +10,15 @@ export async function GET(request: Request) {
   return json({ history: await listHistory() });
 }
 
-/** Reverts calendars to a snapshot. The current state is itself snapshotted first, so a revert can be undone. */
+/** Reverts calendars and photo settings to a snapshot. The current state is itself snapshotted first, so a revert can be undone. */
 export async function POST(request: Request) {
   const denied = await requireAdmin(request, { mutating: true });
   if (denied) return denied;
   const body = await readJsonBody<{ id?: string }>(request);
   const snapshot = body?.id ? await readHistorySnapshot(body.id) : null;
   if (!snapshot) return json({ error: "That version no longer exists." }, 404);
-  const saved = await saveSettings(snapshot.calendars, `Reverted to version from ${snapshot.updatedAt}`);
-  console.log(`[admin] calendars reverted to ${body?.id}`);
+  const saved = await saveSettings({ calendars: snapshot.calendars, photos: snapshot.photos }, `Reverted to version from ${snapshot.updatedAt}`);
+  console.log(`[admin] settings reverted to ${body?.id}`);
+  void syncAll(); // re-fetch any album the restored version brings back
   return json({ ok: true, updatedAt: saved.updatedAt });
 }